--- title: Get started writing data description: Get started writing data to InfluxDB by learning about line protocol and using tools like the InfluxDB UI, influx CLI, Telegraf, client libraries, and the InfluxDB API. url: https://docs.influxdata.com/influxdb3/cloud-serverless/get-started/write/ estimated_tokens: 35347 product: InfluxDB Cloud Serverless version: cloud-serverless --- # Get started writing data - 2 / 3 This tutorial walks you through the fundamental of creating **line protocol** data and writing it to InfluxDB. InfluxDB provides many different options for ingesting or writing data, including the following: - Influx user interface (UI) - InfluxDB HTTP API (v1 and v2) - Telegraf - `influx3` data CLI - InfluxDB client libraries - `influx` CLI If using tools like Telegraf or InfluxDB client libraries, they can build the line protocol for you, but it’s good to understand how line protocol works. ## Line protocol All data written to InfluxDB is written using **line protocol**, a text-based format that lets you provide the necessary information to write a data point to InfluxDB. *This tutorial covers the basics of line protocol, but for detailed information, see the [Line protocol reference](/influxdb3/cloud-serverless/reference/syntax/line-protocol/).* ### Line protocol elements Each line of line protocol contains the following elements: \* Required - \* **measurement**: String that identifies the [measurement](/influxdb3/cloud-serverless/reference/glossary/#measurement) to store the data in. - **tag set**: Comma-delimited list of key value pairs, each representing a tag. Tag keys and values are unquoted strings. *Spaces, commas, and equal characters must be escaped.* - \* **field set**: Comma-delimited list of key value pairs, each representing a field. Field keys are unquoted strings. *Spaces and commas must be escaped.* Field values can be [strings](/influxdb3/cloud-serverless/reference/syntax/line-protocol/#string) (quoted), [floats](/influxdb3/cloud-serverless/reference/syntax/line-protocol/#float), [integers](/influxdb3/cloud-serverless/reference/syntax/line-protocol/#integer), [unsigned integers](/influxdb3/cloud-serverless/reference/syntax/line-protocol/#uinteger), or [booleans](/influxdb3/cloud-serverless/reference/syntax/line-protocol/#boolean). - **timestamp**: [Unix timestamp](/influxdb3/cloud-serverless/reference/syntax/line-protocol/#unix-timestamp) associated with the data. InfluxDB supports up to nanosecond precision. *If the precision of the timestamp is not in nanoseconds, you must specify the precision when writing the data to InfluxDB.* #### Line protocol element parsing - **measurement**: Everything before the *first unescaped comma before the first whitespace*. - **tag set**: Key-value pairs between the *first unescaped comma* and the *first unescaped whitespace*. - **field set**: Key-value pairs between the *first and second unescaped whitespaces*. - **timestamp**: Integer value after the *second unescaped whitespace*. - Lines are separated by the newline character (`\n`). Line protocol is whitespace sensitive. myMeasurement,tag1=val1,tag2=val2 field1="v1",field2=1i 0000000000000000000 *For schema design recommendations, see [InfluxDB schema design](/influxdb3/cloud-serverless/write-data/best-practices/schema-design/).* ## Construct line protocol With a basic understanding of line protocol, you can now construct line protocol and write data to InfluxDB. Consider a use case where you collect data from sensors in your home. Each sensor collects temperature, humidity, and carbon monoxide readings. To collect this data, use the following schema: - **measurement**: `home` - **tags** - `room`: Living Room or Kitchen - **fields** - `temp`: temperature in °C (float) - `hum`: percent humidity (float) - `co`: carbon monoxide in parts per million (integer) - **timestamp**: Unix timestamp in *second* precision The following line protocol sample represents data collected hourly beginning at **2022-01-01T08:00:00Z (UTC)** until **2022-01-01T20:00:00Z (UTC)**. ##### Home sensor data line protocol ```text home,room=Living\ Room temp=21.1,hum=35.9,co=0i 1719924000 home,room=Kitchen temp=21.0,hum=35.9,co=0i 1719924000 home,room=Living\ Room temp=21.4,hum=35.9,co=0i 1719927600 home,room=Kitchen temp=23.0,hum=36.2,co=0i 1719927600 home,room=Living\ Room temp=21.8,hum=36.0,co=0i 1719931200 home,room=Kitchen temp=22.7,hum=36.1,co=0i 1719931200 home,room=Living\ Room temp=22.2,hum=36.0,co=0i 1719934800 home,room=Kitchen temp=22.4,hum=36.0,co=0i 1719934800 home,room=Living\ Room temp=22.2,hum=35.9,co=0i 1719938400 home,room=Kitchen temp=22.5,hum=36.0,co=0i 1719938400 home,room=Living\ Room temp=22.4,hum=36.0,co=0i 1719942000 home,room=Kitchen temp=22.8,hum=36.5,co=1i 1719942000 home,room=Living\ Room temp=22.3,hum=36.1,co=0i 1719945600 home,room=Kitchen temp=22.8,hum=36.3,co=1i 1719945600 home,room=Living\ Room temp=22.3,hum=36.1,co=1i 1719949200 home,room=Kitchen temp=22.7,hum=36.2,co=3i 1719949200 home,room=Living\ Room temp=22.4,hum=36.0,co=4i 1719952800 home,room=Kitchen temp=22.4,hum=36.0,co=7i 1719952800 home,room=Living\ Room temp=22.6,hum=35.9,co=5i 1719956400 home,room=Kitchen temp=22.7,hum=36.0,co=9i 1719956400 home,room=Living\ Room temp=22.8,hum=36.2,co=9i 1719960000 home,room=Kitchen temp=23.3,hum=36.9,co=18i 1719960000 home,room=Living\ Room temp=22.5,hum=36.3,co=14i 1719963600 home,room=Kitchen temp=23.1,hum=36.6,co=22i 1719963600 home,room=Living\ Room temp=22.2,hum=36.4,co=17i 1719967200 home,room=Kitchen temp=22.7,hum=36.5,co=26i 1719967200 ``` ## Write line protocol to InfluxDB The following examples show how to write the preceding [sample data](#home-sensor-data-line-protocol), already in line protocol format, to an InfluxDB Cloud Serverless bucket. To learn more about available tools and options, see [Write data](/influxdb3/cloud-serverless/write-data/). Some examples in this getting started tutorial assume your InfluxDB credentials (**URL**, **organization**, and **token**) are provided by [environment variables](/influxdb3/cloud-serverless/get-started/setup/?t=InfluxDB+API#configure-authentication-credentials). **InfluxDB UI:** 1. Go to [cloud2.influxdata.com](https://cloud2.influxdata.com) in a browser to log in and access the InfluxDB UI. 2. Navigate to **Load Data** > **Buckets** using the left navigation bar. Load Data 3. Click **Add Data** on the bucket you want to write the data to and select **Line Protocol**. 4. Select **Enter Manually**. 5. Important In the **Precision** drop-down menu above the line protocol text field, select **Seconds** (to match to precision of the timestamps in the line protocol). 6. Copy the [line protocol above](#home-sensor-data-line-protocol) and paste it into the line protocol text field. 7. Click **Write Data**. The UI confirms that the data has been written successfully. **influx CLI:** 1. If you haven’t already, [download, install, and configure the `influx` CLI](/influxdb3/cloud-serverless/get-started/setup/?t=influx+CLI#download-install-and-configure-the-influx-cli). 2. Use the [`influx write` command](/influxdb3/cloud-serverless/reference/cli/influx/write/) to write the [preceding line protocol](#home-sensor-data-line-protocol) to InfluxDB. **Provide the following**: - `-b, --bucket` or `--bucket-id` flag with the bucket name or ID to write do. - `-p, --precision` flag with the [timestamp precision](/influxdb3/cloud-serverless/reference/glossary/#timestamp-precision) (`s`). - String-encoded line protocol. - [Connection and authentication credentials](/influxdb3/cloud-serverless/get-started/setup/?t=influx+CLI#configure-authentication-credentials) ```sh influx write \ --bucket get-started \ --precision s " home,room=Living\ Room temp=21.1,hum=35.9,co=0i 1719924000 home,room=Kitchen temp=21.0,hum=35.9,co=0i 1719924000 home,room=Living\ Room temp=21.4,hum=35.9,co=0i 1719927600 home,room=Kitchen temp=23.0,hum=36.2,co=0i 1719927600 home,room=Living\ Room temp=21.8,hum=36.0,co=0i 1719931200 home,room=Kitchen temp=22.7,hum=36.1,co=0i 1719931200 home,room=Living\ Room temp=22.2,hum=36.0,co=0i 1719934800 home,room=Kitchen temp=22.4,hum=36.0,co=0i 1719934800 home,room=Living\ Room temp=22.2,hum=35.9,co=0i 1719938400 home,room=Kitchen temp=22.5,hum=36.0,co=0i 1719938400 home,room=Living\ Room temp=22.4,hum=36.0,co=0i 1719942000 home,room=Kitchen temp=22.8,hum=36.5,co=1i 1719942000 home,room=Living\ Room temp=22.3,hum=36.1,co=0i 1719945600 home,room=Kitchen temp=22.8,hum=36.3,co=1i 1719945600 home,room=Living\ Room temp=22.3,hum=36.1,co=1i 1719949200 home,room=Kitchen temp=22.7,hum=36.2,co=3i 1719949200 home,room=Living\ Room temp=22.4,hum=36.0,co=4i 1719952800 home,room=Kitchen temp=22.4,hum=36.0,co=7i 1719952800 home,room=Living\ Room temp=22.6,hum=35.9,co=5i 1719956400 home,room=Kitchen temp=22.7,hum=36.0,co=9i 1719956400 home,room=Living\ Room temp=22.8,hum=36.2,co=9i 1719960000 home,room=Kitchen temp=23.3,hum=36.9,co=18i 1719960000 home,room=Living\ Room temp=22.5,hum=36.3,co=14i 1719963600 home,room=Kitchen temp=23.1,hum=36.6,co=22i 1719963600 home,room=Living\ Room temp=22.2,hum=36.4,co=17i 1719967200 home,room=Kitchen temp=22.7,hum=36.5,co=26i 1719967200 " ``` If successful, the output is the success message; otherwise, error details and the failure message. **Telegraf:** Use [Telegraf](/telegraf/v1/) to consume line protocol, and then write it to InfluxDB Cloud Serverless. 11. If you haven’t already, follow the instructions to [download and install Telegraf](/telegraf/v1/install/). 12. Copy and save the [home sensor data sample](#home-sensor-data-line-protocol) to a file on your local system–for example, `home.lp`. ```sh cat <<- EOF > home.lp home,room=Living\ Room temp=21.1,hum=35.9,co=0i 1719924000 home,room=Kitchen temp=21.0,hum=35.9,co=0i 1719924000 home,room=Living\ Room temp=21.4,hum=35.9,co=0i 1719927600 home,room=Kitchen temp=23.0,hum=36.2,co=0i 1719927600 home,room=Living\ Room temp=21.8,hum=36.0,co=0i 1719931200 home,room=Kitchen temp=22.7,hum=36.1,co=0i 1719931200 home,room=Living\ Room temp=22.2,hum=36.0,co=0i 1719934800 home,room=Kitchen temp=22.4,hum=36.0,co=0i 1719934800 home,room=Living\ Room temp=22.2,hum=35.9,co=0i 1719938400 home,room=Kitchen temp=22.5,hum=36.0,co=0i 1719938400 home,room=Living\ Room temp=22.4,hum=36.0,co=0i 1719942000 home,room=Kitchen temp=22.8,hum=36.5,co=1i 1719942000 home,room=Living\ Room temp=22.3,hum=36.1,co=0i 1719945600 home,room=Kitchen temp=22.8,hum=36.3,co=1i 1719945600 home,room=Living\ Room temp=22.3,hum=36.1,co=1i 1719949200 home,room=Kitchen temp=22.7,hum=36.2,co=3i 1719949200 home,room=Living\ Room temp=22.4,hum=36.0,co=4i 1719952800 home,room=Kitchen temp=22.4,hum=36.0,co=7i 1719952800 home,room=Living\ Room temp=22.6,hum=35.9,co=5i 1719956400 home,room=Kitchen temp=22.7,hum=36.0,co=9i 1719956400 home,room=Living\ Room temp=22.8,hum=36.2,co=9i 1719960000 home,room=Kitchen temp=23.3,hum=36.9,co=18i 1719960000 home,room=Living\ Room temp=22.5,hum=36.3,co=14i 1719963600 home,room=Kitchen temp=23.1,hum=36.6,co=22i 1719963600 home,room=Living\ Room temp=22.2,hum=36.4,co=17i 1719967200 home,room=Kitchen temp=22.7,hum=36.5,co=26i 1719967200 EOF ``` 13. Run the following command to generate a Telegraf configuration file (`./telegraf.conf`) that enables the `inputs.file` and `outputs.influxdb_v2` plugins: ```sh telegraf --sample-config \ --input-filter file \ --output-filter influxdb_v2 \ > telegraf.conf ``` 14. In your editor, open `./telegraf.conf` and configure the following: - **`file` input plugin**: In the `[[inputs.file]].files` list, replace `"/tmp/metrics.out"` with your sample data filename. If Telegraf can’t find a file when started, it stops processing and exits. ```toml [[inputs.file]] ## Files to parse each interval. Accept standard unix glob matching rules, ## as well as ** to match recursive files and directories. files = ["home.lp"] ``` - **`output-influxdb_v2` output plugin**: In the `[[outputs.influxdb_v2]]` section, replace the default values with the following configuration for your InfluxDB Cloud Serverless bucket: ```toml [[outputs.influxdb_v2]] # InfluxDB Cloud Serverless URL urls = ["${INFLUX_HOST}"] # INFLUX_TOKEN is an environment variable you assigned to your API token token = "${INFLUX_TOKEN}" # An empty string (InfluxDB ignores this parameter) organization = "" # Bucket name bucket = "get-started" ``` The example configuration uses the following InfluxDB credentials: - **`urls`**: an array containing your **`INFLUX_HOST`** environment variable - **`token`**: your **`INFLUX_TOKEN`** environment variable - **`organization`**: an empty string (InfluxDB ignores this parameter) - **`bucket`**: the name of the bucket to write to 15. To write the data, start the `telegraf` daemon with the following options: - `--config`: Specifies the path of the configuration file. - `--once`: Runs a single Telegraf collection cycle for the configured inputs and outputs, and then exits. Enter the following command in your terminal: ```sh telegraf --once --config ./telegraf.conf ``` If the write is successful, the output is similar to the following: ```plaintext 2023-05-31T20:09:08Z D! [agent] Starting service inputs 2023-05-31T20:09:19Z D! [outputs.influxdb_v2] Wrote batch of 52 metrics in 348.008167ms 2023-05-31T20:09:19Z D! [outputs.influxdb_v2] Buffer fullness: 0 / 10000 metrics ``` Telegraf and its plugins provide many options for reading and writing data. To learn more, see how to [use Telegraf to write data](/influxdb3/cloud-serverless/write-data/use-telegraf/). **v1 API:** Write data with your existing workloads that already use the InfluxDB v1 `/write` API endpoint. If migrating data from InfluxDB 1.x, see the [Migrate data from InfluxDB 1.x to InfluxDB InfluxDB Cloud Serverless](/influxdb3/cloud-serverless/guides/migrate-data/migrate-1x-to-serverless/) guide. To write data to InfluxDB using the [InfluxDB v1 HTTP API](/influxdb3/cloud-serverless/reference/api/), send a request to the [InfluxDB API `/write` endpoint](/influxdb3/cloud-serverless/api/write-data/#operation/PostLegacyWrite) using the `POST` request method. [POST https://cloud2.influxdata.com/write](/influxdb3/cloud-serverless/api/write-data/#operation/PostLegacyWrite) Include the following with your request: - **Headers**: - **Authorization**: Token - **Content-Type**: text/plain; charset=utf-8 - **Accept**: application/json - **Query parameters**: - **db**: InfluxDB bucket name - **precision**:[timestamp precision](/influxdb3/cloud-serverless/reference/glossary/#timestamp-precision) (default is `ns`) - **rp**: [retention policy](/influxdb3/cloud-serverless/reference/glossary/#retention-policy-rp) name (default is the default DBRP mapping, if it exists, for the namespace; otherwise, an [auto-generated DBRP mapping](/influxdb3/cloud-serverless/guides/api-compatibility/v1/#retention-policy-and-dbrp-mapping)). - **Request body**: Line protocol as plain text The following example uses cURL and the InfluxDB v1 API to write line protocol to InfluxDB. Given that `API_TOKEN` is an [All-Access API token](/influxdb3/cloud-serverless/admin/tokens/#all-access-api-token), InfluxDB creates a bucket named `get-started/autogen` and an `autogen` DBRP mapping, and then writes the data to the bucket. ```sh response=$(curl --silent --write-out "%{response_code}:-%{errormsg}" \ "https://cloud2.influxdata.com/write?db=get-started&precision=s" \ --header "Authorization: Token API_TOKEN" \ --header "Content-type: text/plain; charset=utf-8" \ --header "Accept: application/json" \ --data-binary " home,room=Living\ Room temp=21.1,hum=35.9,co=0i 1641024000 home,room=Kitchen temp=21.0,hum=35.9,co=0i 1641024000 home,room=Living\ Room temp=21.4,hum=35.9,co=0i 1641027600 home,room=Kitchen temp=23.0,hum=36.2,co=0i 1641027600 home,room=Living\ Room temp=21.8,hum=36.0,co=0i 1641031200 home,room=Kitchen temp=22.7,hum=36.1,co=0i 1641031200 home,room=Living\ Room temp=22.2,hum=36.0,co=0i 1641034800 home,room=Kitchen temp=22.4,hum=36.0,co=0i 1641034800 home,room=Living\ Room temp=22.2,hum=35.9,co=0i 1641038400 home,room=Kitchen temp=22.5,hum=36.0,co=0i 1641038400 home,room=Living\ Room temp=22.4,hum=36.0,co=0i 1641042000 home,room=Kitchen temp=22.8,hum=36.5,co=1i 1641042000 home,room=Living\ Room temp=22.3,hum=36.1,co=0i 1641045600 home,room=Kitchen temp=22.8,hum=36.3,co=1i 1641045600 home,room=Living\ Room temp=22.3,hum=36.1,co=1i 1641049200 home,room=Kitchen temp=22.7,hum=36.2,co=3i 1641049200 home,room=Living\ Room temp=22.4,hum=36.0,co=4i 1641052800 home,room=Kitchen temp=22.4,hum=36.0,co=7i 1641052800 home,room=Living\ Room temp=22.6,hum=35.9,co=5i 1641056400 home,room=Kitchen temp=22.7,hum=36.0,co=9i 1641056400 home,room=Living\ Room temp=22.8,hum=36.2,co=9i 1641060000 home,room=Kitchen temp=23.3,hum=36.9,co=18i 1641060000 home,room=Living\ Room temp=22.5,hum=36.3,co=14i 1641063600 home,room=Kitchen temp=23.1,hum=36.6,co=22i 1641063600 home,room=Living\ Room temp=22.2,hum=36.4,co=17i 1641067200 home,room=Kitchen temp=22.7,hum=36.5,co=26i 1641067200 ") # Format the response code and error message output. response_code=${response%%:-*} errormsg=${response#*:-} # Remove leading and trailing whitespace from errormsg errormsg=$(echo "${errormsg}" | tr -d '[:space:]') echo "$response_code" if [[ $errormsg ]]; then echo "$response" fi ``` Replace the following: - `API_TOKEN`: a [token](/influxdb3/cloud-serverless/admin/tokens/) with sufficient permissions to the specified bucket. *For InfluxDB to [auto-generate the DBRP mapping](/influxdb3/cloud-serverless/guides/api-compatibility/v1/#retention-policy-and-dbrp-mapping), you must use an [All-Access API token](/influxdb3/cloud-serverless/admin/tokens/#all-access-api-token) in the write request*. If successful, the output is an HTTP `204 No Content` status code; otherwise, the error status code and failure message. ``` 204 ``` **v2 API:** To write data to InfluxDB using the [InfluxDB v2 HTTP API](/influxdb3/cloud-serverless/reference/api/), send a request to the InfluxDB API `/api/v2/write` endpoint using the `POST` request method. [POST https://cloud2.influxdata.com/api/v2/write](/influxdb3/cloud-serverless/api/write-data/#operation/PostWrite) Include the following with your request: - **Headers**: - **Authorization**: Token - **Content-Type**: text/plain; charset=utf-8 - **Accept**: application/json - **Query parameters**: - **bucket**: InfluxDB bucket name - **precision**: [timestamp precision](/influxdb3/cloud-serverless/reference/glossary/#timestamp-precision) (default is `ns`) - **Request body**: Line protocol as plain text The following example uses cURL and the InfluxDB v2 API to write line protocol to InfluxDB: ```sh response=$(curl --silent --write-out "%{response_code}:-%{errormsg}" \ "https://cloud2.influxdata.com/api/v2/write?bucket=get-started&precision=s" \ --header "Authorization: Token DATABASE_TOKEN" \ --header "Content-Type: text/plain; charset=utf-8" \ --header "Accept: application/json" \ --data-binary " home,room=Living\ Room temp=21.1,hum=35.9,co=0i 1641024000 home,room=Kitchen temp=21.0,hum=35.9,co=0i 1641024000 home,room=Living\ Room temp=21.4,hum=35.9,co=0i 1641027600 home,room=Kitchen temp=23.0,hum=36.2,co=0i 1641027600 home,room=Living\ Room temp=21.8,hum=36.0,co=0i 1641031200 home,room=Kitchen temp=22.7,hum=36.1,co=0i 1641031200 home,room=Living\ Room temp=22.2,hum=36.0,co=0i 1641034800 home,room=Kitchen temp=22.4,hum=36.0,co=0i 1641034800 home,room=Living\ Room temp=22.2,hum=35.9,co=0i 1641038400 home,room=Kitchen temp=22.5,hum=36.0,co=0i 1641038400 home,room=Living\ Room temp=22.4,hum=36.0,co=0i 1641042000 home,room=Kitchen temp=22.8,hum=36.5,co=1i 1641042000 home,room=Living\ Room temp=22.3,hum=36.1,co=0i 1641045600 home,room=Kitchen temp=22.8,hum=36.3,co=1i 1641045600 home,room=Living\ Room temp=22.3,hum=36.1,co=1i 1641049200 home,room=Kitchen temp=22.7,hum=36.2,co=3i 1641049200 home,room=Living\ Room temp=22.4,hum=36.0,co=4i 1641052800 home,room=Kitchen temp=22.4,hum=36.0,co=7i 1641052800 home,room=Living\ Room temp=22.6,hum=35.9,co=5i 1641056400 home,room=Kitchen temp=22.7,hum=36.0,co=9i 1641056400 home,room=Living\ Room temp=22.8,hum=36.2,co=9i 1641060000 home,room=Kitchen temp=23.3,hum=36.9,co=18i 1641060000 home,room=Living\ Room temp=22.5,hum=36.3,co=14i 1641063600 home,room=Kitchen temp=23.1,hum=36.6,co=22i 1641063600 home,room=Living\ Room temp=22.2,hum=36.4,co=17i 1641067200 home,room=Kitchen temp=22.7,hum=36.5,co=26i 1641067200 ") # Format the response code and error message output. response_code=${response%%:-*} errormsg=${response#*:-} # Remove leading and trailing whitespace from errormsg errormsg=$(echo "${errormsg}" | tr -d '[:space:]') echo "$response_code" if [[ $errormsg ]]; then echo "$errormsg" fi ``` Replace the following: - `API_TOKEN`: a [token](/influxdb3/cloud-serverless/admin/tokens/) with sufficient permissions to the specified bucket If successful, the output is an HTTP `204 No Content` status code; otherwise, the error status code and failure message. ``` 204 ``` **Python:** To write data to InfluxDB Cloud Serverless using Python, use the [`influxdb_client_3` module](https://github.com/InfluxCommunity/influxdb3-python). The following steps include setting up a Python virtual environment to scope dependencies to your current project. 1. Create a module directory and navigate into it–for example: ```bash mkdir -p influxdb_py_client && cd influxdb_py_client ``` 2. Setup your Python virtual environment. Inside of your module directory: ```bash python -m venv envs/virtual-env ``` 3. Activate the virtual environment. ```bash source ./envs/virtual-env/bin/activate ``` 4. Install the client library package: ```bash pip install influxdb3-python ``` The `influxdb3-python` package provides the `influxdb_client_3` module and also installs the [`pyarrow` package](https://arrow.apache.org/docs/python/index.html) for working with Arrow data returned from queries. 5. In your terminal or editor, create a new file for your code–for example: `write.py`. ```bash touch write.py ``` 6. Inside of `write.py`, enter the following sample code: ```py from influxdb_client_3 import InfluxDBClient3 import os # INFLUX_TOKEN is an environment variable you assigned to your # API WRITE token value. token = os.getenv('INFLUX_TOKEN') # host is the URL hostname without protocol or trailing slash client = InfluxDBClient3( host='cloud2.influxdata.com', token=token, database='get-started' ) lines = [ "home,room=Living\ Room temp=21.1,hum=35.9,co=0i 1719924000", "home,room=Kitchen temp=21.0,hum=35.9,co=0i 1719924000", "home,room=Living\ Room temp=21.4,hum=35.9,co=0i 1719927600", "home,room=Kitchen temp=23.0,hum=36.2,co=0i 1719927600", "home,room=Living\ Room temp=21.8,hum=36.0,co=0i 1719931200", "home,room=Kitchen temp=22.7,hum=36.1,co=0i 1719931200", "home,room=Living\ Room temp=22.2,hum=36.0,co=0i 1719934800", "home,room=Kitchen temp=22.4,hum=36.0,co=0i 1719934800", "home,room=Living\ Room temp=22.2,hum=35.9,co=0i 1719938400", "home,room=Kitchen temp=22.5,hum=36.0,co=0i 1719938400", "home,room=Living\ Room temp=22.4,hum=36.0,co=0i 1719942000", "home,room=Kitchen temp=22.8,hum=36.5,co=1i 1719942000", "home,room=Living\ Room temp=22.3,hum=36.1,co=0i 1719945600", "home,room=Kitchen temp=22.8,hum=36.3,co=1i 1719945600", "home,room=Living\ Room temp=22.3,hum=36.1,co=1i 1719949200", "home,room=Kitchen temp=22.7,hum=36.2,co=3i 1719949200", "home,room=Living\ Room temp=22.4,hum=36.0,co=4i 1719952800", "home,room=Kitchen temp=22.4,hum=36.0,co=7i 1719952800", "home,room=Living\ Room temp=22.6,hum=35.9,co=5i 1719956400", "home,room=Kitchen temp=22.7,hum=36.0,co=9i 1719956400", "home,room=Living\ Room temp=22.8,hum=36.2,co=9i 1719960000", "home,room=Kitchen temp=23.3,hum=36.9,co=18i 1719960000", "home,room=Living\ Room temp=22.5,hum=36.3,co=14i 1719963600", "home,room=Kitchen temp=23.1,hum=36.6,co=22i 1719963600", "home,room=Living\ Room temp=22.2,hum=36.4,co=17i 1719967200", "home,room=Kitchen temp=22.7,hum=36.5,co=26i 1719967200" ] client.write(lines,write_precision='s') ``` The sample does the following: 1. Imports the `InfluxDBClient3` object from the `influxdb_client_3` module. 2. Calls the `InfluxDBClient3()` constructor to instantiate an InfluxDB client configured with the following credentials: - **`host`**: InfluxDB Cloud Serverless region hostname (URL without protocol or trailing slash) - **`token`**: a [token](/influxdb3/cloud-serverless/admin/tokens/) with write access to the specified bucket. *Store this in a secret store or environment variable to avoid exposing the raw token string.* - **`database`**: the name of the InfluxDB Cloud Serverless bucket to write to 3. Defines a list of line protocol strings where each string represents a data record. 4. Calls the `client.write()` method with the line protocol record list and write options. **Because the timestamps in the sample line protocol are in second precision, the example passes the `write_precision='s'` option to set the [timestamp precision](/influxdb3/cloud-serverless/reference/glossary/#timestamp-precision) to seconds.** 7. To execute the module and write line protocol to your InfluxDB Cloud Serverless bucket, enter the following command in your terminal: ```bash python write.py ``` If successful, the output is the success message; otherwise, error details and the failure message. **Go:** To write data to InfluxDB Cloud Serverless using Go, use the InfluxDB 3 [influxdb3-go client library package](https://github.com/InfluxCommunity/influxdb3-go). 1. Inside of your project directory, create a new module directory and navigate into it. ```bash mkdir -p influxdb_go_client && cd influxdb_go_client ``` 2. Initialize a new Go module in the directory. ```bash go mod init influxdb_go_client ``` 3. In your terminal or editor, create a new file for your code–for example: `write.go`. ```bash touch write.go ``` 4. Inside of `write.go`, enter the following sample code: ```go package main import ( "context" "os" "fmt" "log" "github.com/InfluxCommunity/influxdb3-go/v2/influxdb3" ) // Write line protocol data to InfluxDB func WriteLineProtocol() error { // INFLUX_TOKEN is an environment variable you assigned to your // API WRITE token value. token := os.Getenv("INFLUX_TOKEN") database := os.Getenv("INFLUX_DATABASE") // Initialize a client with URL and token, // and set the timestamp precision for writes. client, err := influxdb3.New(influxdb3.ClientConfig{ Host: "https://cloud2.influxdata.com", Token: token, Database: database, WriteOptions: &influxdb3.WriteOptions{Precision: lineprotocol.Second}, }) // Close the client when the function returns. defer func(client *influxdb3.Client) { err := client.Close() if err != nil { panic(err) } }(client) // Define line protocol records to write. // Use a raw string literal (denoted by backticks) // to preserve backslashes and prevent interpretation // of escape sequences--for example, escaped spaces in tag values. lines := [...]string{ `home,room=Living\ Room temp=21.1,hum=35.9,co=0i 1719124000`, `home,room=Kitchen temp=21.0,hum=35.9,co=0i 1719124000`, `home,room=Living\ Room temp=21.4,hum=35.9,co=0i 1719127600`, `home,room=Kitchen temp=23.0,hum=36.2,co=0i 1719127600`, `home,room=Living\ Room temp=21.8,hum=36.0,co=0i 1719131200`, `home,room=Kitchen temp=22.7,hum=36.1,co=0i 1719131200`, `home,room=Living\ Room temp=22.2,hum=36.0,co=0i 1719134800`, `home,room=Kitchen temp=22.4,hum=36.0,co=0i 1719134800`, `home,room=Living\ Room temp=22.2,hum=35.9,co=0i 1719138400`, `home,room=Kitchen temp=22.5,hum=36.0,co=0i 1719138400`, `home,room=Living\ Room temp=22.4,hum=36.0,co=0i 1719142000`, `home,room=Kitchen temp=22.8,hum=36.5,co=1i 1719142000`, `home,room=Living\ Room temp=22.3,hum=36.1,co=0i 1719145600`, `home,room=Kitchen temp=22.8,hum=36.3,co=1i 1719145600`, `home,room=Living\ Room temp=22.3,hum=36.1,co=1i 1719149200`, `home,room=Kitchen temp=22.7,hum=36.2,co=3i 1719149200`, `home,room=Living\ Room temp=22.4,hum=36.0,co=4i 1719152800`, `home,room=Kitchen temp=22.4,hum=36.0,co=7i 1719152800`, `home,room=Living\ Room temp=22.6,hum=35.9,co=5i 1719156400`, `home,room=Kitchen temp=22.7,hum=36.0,co=9i 1719156400`, `home,room=Living\ Room temp=22.8,hum=36.2,co=9i 1719160000`, `home,room=Kitchen temp=23.3,hum=36.9,co=18i 1719160000`, `home,room=Living\ Room temp=22.5,hum=36.3,co=14i 1719163600`, `home,room=Kitchen temp=23.1,hum=36.6,co=22i 1719163600`, `home,room=Living\ Room temp=22.2,hum=36.4,co=17i 1719167200`, `home,room=Kitchen temp=22.7,hum=36.5,co=26i 1719167200`, } // Iterate over the lines array and write each line // separately to InfluxDB for _, record := range lines { err = client.Write(context.Background(), []byte(record)) if err != nil { log.Fatalf("Error writing line protocol: %v", err) } } if err != nil { panic(err) } fmt.Println("Data has been written successfully.") return nil } ``` The sample does the following: 1. Imports required packages. 2. Defines a `WriteLineProtocol()` function that does the following: 1. To instantiate the client, calls the `influxdb3.New(influxdb3.ClientConfig)` function and passes the following: - **`Host`**: your InfluxDB Cloud Serverless region URL - **`Token`**: a [token](/influxdb3/cloud-serverless/admin/tokens/) with write access to the specified bucket. *Store this in a secret store or environment variable to avoid exposing the raw token string.* - **`WriteOptions`**: `influxdb3.WriteOptions` options for writing to InfluxDB. **Because the timestamps in the sample line protocol are in second precision, the example passes the `Precision: lineprotocol.Second` option to set the [timestamp precision](/influxdb3/cloud-serverless/reference/glossary/#timestamp-precision) to seconds.** 2. Defines a deferred function that closes the client when the function returns. 3. Defines an array of line protocol strings where each string represents a data record. 4. Iterates through the array of line protocol and calls the write client’s `Write()` method to write each line of line protocol separately to InfluxDB. 5. In your editor, create a `main.go` file and enter the following sample code that calls the `WriteLineProtocol()` function: ```go package main // Module main function func main() { WriteLineProtocol() } ``` 6. To install dependencies and write the data to your InfluxDB Cloud Serverless bucket, enter the following command into your terminal: ```sh go mod tidy && go run influxdb_go_client ``` If successful, the output is the success message; otherwise, error details and the failure message. **Node.js:** 1. If you haven’t already, follow the instructions for [Downloading and installing Node.js and npm](https://docs.npmjs.com/downloading-and-installing-node-js-and-npm) for your system. 2. In your terminal, enter the following command to create a `influxdb_js_client` directory for your project: ```bash mkdir influxdb_js_client && cd influxdb_js_client ``` 3. Inside of `influxdb_js_client`, enter the following command to initialize a package. This example configures the package to use [ECMAScript modules (ESM)](https://nodejs.org/api/packages.html#modules-loaders). ```bash npm init -y; npm pkg set type="module" ``` 4. Install the `@influxdata/influxdb3-client` JavaScript client library as a dependency to your project. ```bash npm install --save @influxdata/influxdb3-client ``` 5. In your terminal or editor, create a `write.js` file. ```bash touch write.js ``` 6. Inside of `write.js`, enter the following sample code: ```js // write.js import { InfluxDBClient } from "@influxdata/influxdb3-client"; /** * Set InfluxDB credentials. */ const host = 'cloud2.influxdata.com'; const database = 'get-started'; /** * INFLUX_TOKEN is an environment variable you assigned to your * API WRITE token value. */ const token = process.env.INFLUX_TOKEN; /** * Write line protocol to InfluxDB using the JavaScript client library. */ export async function writeLineProtocol() { /** * Instantiate an InfluxDBClient */ const client = new InfluxDBClient({ host, token }); /** * Define line protocol records to write. */ const records = [ `home,room=Living\\ Room temp=21.1,hum=35.9,co=0i 1719124000`, `home,room=Kitchen temp=21.0,hum=35.9,co=0i 1719124000`, `home,room=Living\\ Room temp=21.4,hum=35.9,co=0i 1719127600`, `home,room=Kitchen temp=23.0,hum=36.2,co=0 1719127600`, `home,room=Living\\ Room temp=21.8,hum=36.0,co=0i 1719131200`, `home,room=Kitchen temp=22.7,hum=36.1,co=0i 1719131200`, `home,room=Living\\ Room temp=22.2,hum=36.0,co=0i 1719134800`, `home,room=Kitchen temp=22.4,hum=36.0,co=0i 1719134800`, `home,room=Living\\ Room temp=22.2,hum=35.9,co=0i 1719138400`, `home,room=Kitchen temp=22.5,hum=36.0,co=0i 1719138400`, `home,room=Living\\ Room temp=22.4,hum=36.0,co=0i 1719142000`, `home,room=Kitchen temp=22.8,hum=36.5,co=1i 1719142000`, `home,room=Living\\ Room temp=22.3,hum=36.1,co=0i 1719145600`, `home,room=Kitchen temp=22.8,hum=36.3,co=1i 1719145600`, `home,room=Living\\ Room temp=22.3,hum=36.1,co=1i 1719149200`, `home,room=Kitchen temp=22.7,hum=36.2,co=3i 1719149200`, `home,room=Living\\ Room temp=22.4,hum=36.0,co=4i 1719152800`, `home,room=Kitchen temp=22.4,hum=36.0,co=7i 1719152800`, `home,room=Living\\ Room temp=22.6,hum=35.9,co=5i 1719156400`, `home,room=Kitchen temp=22.7,hum=36.0,co=9i 1719156400`, `home,room=Living\\ Room temp=22.8,hum=36.2,co=9i 1719160000`, `home,room=Kitchen temp=23.3,hum=36.9,co=18i 1719160000`, `home,room=Living\\ Room temp=22.5,hum=36.3,co=14i 1719163600`, `home,room=Kitchen temp=23.1,hum=36.6,co=22i 1719163600`, `home,room=Living\\ Room temp=22.2,hum=36.4,co=17i 1719167200`, `home,room=Kitchen temp=22.7,hum=36.5,co=26i 1719167200`, ]; /** * Creates an array that contains separate write request promises * for all the records. */ const writePromises = records.map((record) => { return client.write(record, database, "", { precision: "s" }) .then(() => `Data has been written successfully: ${record}`, () => `Failed writing data: ${record}`); }); /** * Wait for all the write promises to settle, and then output the results. */ const writeResults = await Promise.allSettled(writePromises); writeResults.forEach(write => console.log(write.value)); /** Close the client to release resources. */ await client.close(); } ``` The sample code does the following: 1. Imports the `InfluxDBClient` class. 2. Calls the `new InfluxDBClient()` constructor and passes a `ClientOptions` object to instantiate a client configured with InfluxDB credentials. - **`host`**: your InfluxDB Cloud Serverless region URL - **`token`**: a [token](/influxdb3/cloud-serverless/admin/tokens/) with write access to the specified bucket. *Store this in a secret store or environment variable to avoid exposing the raw token string.* 3. Defines a list of line protocol strings where each string represents a data record. 4. Calls the client’s `write()` method for each record, defines the success or failure message to return, and collects the pending promises into the `writePromises` array. Each call to `write()` passes the following arguments: - **`record`**: the line protocol record - **`database`**: the name of the InfluxDB Cloud Serverless bucket to write to - **`{precision}`**: a `WriteOptions` object that sets the `precision` value. **Because the timestamps in the sample line protocol are in second precision, the example passes `s` as the `precision` value to set the write [timestamp precision](/influxdb3/cloud-serverless/reference/glossary/#timestamp-precision) to seconds.** 5. Calls `Promise.allSettled()` with the promises array to pause execution until the promises have completed, and then assigns the array containing success and failure messages to a `writeResults` constant. 6. Iterates over and prints the messages in `writeResults`. 7. Closes the client to release resources. 7. In your terminal or editor, create an `index.js` file. 8. Inside of `index.js`, enter the following sample code to import and call `writeLineProtocol()`: ```js // index.js import { writeLineProtocol } from "./write.js"; /** * Execute the client functions. */ async function main() { /** Write line protocol data to InfluxDB. */ await writeLineProtocol(); } main(); ``` 9. In your terminal, execute `index.mjs` to write to InfluxDB Cloud Serverless: ```sh node index.js ``` If successful, the output is the success message; otherwise, error details and the failure message. **C#:** 1. If you haven’t already, follow the [Microsoft.com download instructions](https://dotnet.microsoft.com/en-us/download) to install .NET and the `dotnet` CLI. 2. In your terminal, create an executable C# project using the .NET **console** template. ```sh dotnet new console --name influxdb_csharp_client ``` 3. Change into the generated `influxdb_csharp_client` directory. ```sh cd influxdb_csharp_client ``` 4. Run the following command to install the latest version of the InfluxDB 3 C# client library. ```sh dotnet add package InfluxDB3.Client ``` 5. In your editor, create a `Write.cs` file and enter the following sample code: ```c# // Write.cs using System; using System.Threading.Tasks; using InfluxDB3.Client; using InfluxDB3.Client.Query; namespace InfluxDBv3; public class Write { /** * Writes line protocol to InfluxDB using the C# .NET client * library. */ public static async Task WriteLines() { // Set InfluxDB credentials const string host = "https://cloud2.influxdata.com"; string? database = "get-started"; /** * INFLUX_TOKEN is an environment variable you assigned to your * WRITE token value. */ string? token = System.Environment .GetEnvironmentVariable("INFLUX_TOKEN"); // Instantiate the InfluxDB client with credentials. using var client = new InfluxDBClient( host, token: token, database: database); /** * Define an array of line protocol strings to write. * Include an additional backslash to preserve backslashes * and prevent interpretation of escape sequences---for example, * escaped spaces in tag values. */ string[] lines = new string[] { "home,room=Living\\ Room temp=21.1,hum=35.9,co=0i 1719924000", "home,room=Kitchen temp=21.0,hum=35.9,co=0i 1719924000", "home,room=Living\\ Room temp=21.4,hum=35.9,co=0i 1719927600", "home,room=Kitchen temp=23.0,hum=36.2,co=0i 1719927600", "home,room=Living\\ Room temp=21.8,hum=36.0,co=0i 1719931200", "home,room=Kitchen temp=22.7,hum=36.1,co=0i 1719931200", "home,room=Living\\ Room temp=22.2,hum=36.0,co=0i 1719934800", "home,room=Kitchen temp=22.4,hum=36.0,co=0i 1719934800", "home,room=Living\\ Room temp=22.2,hum=35.9,co=0i 1719938400", "home,room=Kitchen temp=22.5,hum=36.0,co=0i 1719938400", "home,room=Living\\ Room temp=22.4,hum=36.0,co=0i 1719942000", "home,room=Kitchen temp=22.8,hum=36.5,co=1i 1719942000", "home,room=Living\\ Room temp=22.3,hum=36.1,co=0i 1719945600", "home,room=Kitchen temp=22.8,hum=36.3,co=1i 1719945600", "home,room=Living\\ Room temp=22.3,hum=36.1,co=1i 1719949200", "home,room=Kitchen temp=22.7,hum=36.2,co=3i 1719949200", "home,room=Living\\ Room temp=22.4,hum=36.0,co=4i 1719952800", "home,room=Kitchen temp=22.4,hum=36.0,co=7i 1719952800", "home,room=Living\\ Room temp=22.6,hum=35.9,co=5i 1719956400", "home,room=Kitchen temp=22.7,hum=36.0,co=9i 1719956400", "home,room=Living\\ Room temp=22.8,hum=36.2,co=9i 1719960000", "home,room=Kitchen temp=23.3,hum=36.9,co=18i 1719960000", "home,room=Living\\ Room temp=22.5,hum=36.3,co=14i 1719963600", "home,room=Kitchen temp=23.1,hum=36.6,co=22i 1719963600", "home,room=Living\\ Room temp=22.2,hum=36.4,co=17i 1719967200", "home,room=Kitchen temp=22.7,hum=36.5,co=26i 1719967200" }; // Write each record separately. foreach (string line in lines) { // Write the record to InfluxDB with timestamp precision in seconds. await client.WriteRecordAsync( record: line, precision: WritePrecision.S); Console.WriteLine( "Data has been written successfully: {0,-30}", line); } } } ``` The sample does the following: 1. Calls the `new InfluxDBClient()` constructor to instantiate a client configured with InfluxDB credentials. - **host**: your InfluxDB Cloud Serverless region URL - **database**: the name of the InfluxDB Cloud Serverless bucket to write to - **token**: a [token](/influxdb3/cloud-serverless/admin/tokens/) with write access to the specified bucket. *Store this in a secret store or environment variable to avoid exposing the raw token string.* *The `using` statement ensures that the program disposes of the client when it’s no longer needed.* 2. Defines an array of line protocol strings where each string represents a data record. 3. Calls the client’s `WriteRecordAsync()` method to write each line protocol record to InfluxDB. **Because the timestamps in the sample line protocol are in second precision, the example passes the [`WritePrecision.S` enum value](https://github.com/InfluxCommunity/influxdb3-csharp/blob/main/Client/Write/WritePrecision.cs) to the `precision:` option to set the [timestamp precision](/influxdb3/cloud-serverless/reference/glossary/#timestamp-precision) to seconds.** 6. In your editor, open the `Program.cs` file and replace its contents with the following: ```c# // Program.cs using System; using System.Threading.Tasks; namespace InfluxDBv3; public class Program { public static async Task Main() { await Write.WriteLineProtocol(); } } ``` The `Program` class shares the same `InfluxDBv3` namespace as the `Write` class you defined in the preceding step and defines a `Main()` function that calls `Write.WriteLineProtocol()`. The `dotnet` CLI recognizes `Program.Main()` as the entry point for your program. 7. To build and execute the program and write the line protocol to your InfluxDB Cloud Serverless bucket, enter the following command in your terminal: ```sh dotnet run ``` If successful, the output is the success message; otherwise, error details and the failure message. **Java:** *The tutorial assumes using Maven version 3.9 and Java version >= 15.* 1. If you haven’t already, follow the instructions to download and install the [Java JDK](https://www.oracle.com/java/technologies/downloads/) and [Maven](https://maven.apache.org/download.cgi) for your system. 2. In your terminal or editor, use Maven to generate a project–for example: ```bash mvn org.apache.maven.plugins:maven-archetype-plugin:3.1.2:generate \ -DarchetypeArtifactId="maven-archetype-quickstart" \ -DarchetypeGroupId="org.apache.maven.archetypes" -DarchetypeVersion="1.4" \ -DgroupId="com.influxdbv3" -DartifactId="influxdb_java_client" -Dversion="1.0" ``` Maven creates the `` directory (`./influxdb_java_client`) that contains a `pom.xml` and scaffolding for your `com.influxdbv3.influxdb_java_client` Java application. 3. In your terminal or editor, change into the `./influxdb_java_client` directory–for example: ```bash cd ./influxdb_java_client ``` 4. In your editor, open the `pom.xml` Maven configuration file and add the `com.influxdb.influxdb3-java` client library into `dependencies`. ```pom ... ... com.influxdb influxdb3-java 0.1.0 ... ``` 5. To check your `pom.xml` for problems, run Maven’s `validate` command–for example, enter the following in your terminal: ```bash mvn validate ``` 6. In your editor, navigate to the `./influxdb_java_client/src/main/java/com/influxdbv3` directory and create a `Write.java` file. 7. In `Write.java`, enter the following sample code: ```java // Write.java package com.influxdbv3; import java.util.List; import com.influxdb.v3.client.InfluxDBClient; import com.influxdb.v3.client.write.WriteOptions; import com.influxdb.v3.client.write.WritePrecision; /** * Writes line protocol to InfluxDB using the Java client * library. */ public final class Write { /** * Write data to InfluxDB 3. */ private Write() { //not called } /** * @throws Exception */ public static void writeLineProtocol() throws Exception { // Set InfluxDB credentials final String host = "https://cloud2.influxdata.com"; final String database = "get-started"; /** * INFLUX_TOKEN is an environment variable you assigned to your * WRITE token value. */ final char[] token = (System.getenv("INFLUX_TOKEN")). toCharArray(); // Instantiate the InfluxDB client. try (InfluxDBClient client = InfluxDBClient.getInstance(host, token, database)) { // Create a list of line protocol records. final List records = List.of( "home,room=Living\\ Room temp=21.1,hum=35.9,co=0i 1719924000", "home,room=Kitchen temp=21.0,hum=35.9,co=0i 1719924000", "home,room=Living\\ Room temp=21.4,hum=35.9,co=0i 1719927600", "home,room=Kitchen temp=23.0,hum=36.2,co=0i 1719927600", "home,room=Living\\ Room temp=21.8,hum=36.0,co=0i 1719931200", "home,room=Kitchen temp=22.7,hum=36.1,co=0i 1719931200", "home,room=Living\\ Room temp=22.2,hum=36.0,co=0i 1719934800", "home,room=Kitchen temp=22.4,hum=36.0,co=0i 1719934800", "home,room=Living\\ Room temp=22.2,hum=35.9,co=0i 1719938400", "home,room=Kitchen temp=22.5,hum=36.0,co=0i 1719938400", "home,room=Living\\ Room temp=22.4,hum=36.0,co=0i 1719942000", "home,room=Kitchen temp=22.8,hum=36.5,co=1i 1719942000", "home,room=Living\\ Room temp=22.3,hum=36.1,co=0i 1719945600", "home,room=Kitchen temp=22.8,hum=36.3,co=1i 1719945600", "home,room=Living\\ Room temp=22.3,hum=36.1,co=1i 1719949200", "home,room=Kitchen temp=22.7,hum=36.2,co=3i 1719949200", "home,room=Living\\ Room temp=22.4,hum=36.0,co=4i 1719952800", "home,room=Kitchen temp=22.4,hum=36.0,co=7i 1719952800", "home,room=Living\\ Room temp=22.6,hum=35.9,co=5i 1719956400", "home,room=Kitchen temp=22.7,hum=36.0,co=9i 1719956400", "home,room=Living\\ Room temp=22.8,hum=36.2,co=9i 1719960000", "home,room=Kitchen temp=23.3,hum=36.9,co=18i 1719960000", "home,room=Living\\ Room temp=22.5,hum=36.3,co=14i 1719963600", "home,room=Kitchen temp=23.1,hum=36.6,co=22i 1719963600", "home,room=Living\\ Room temp=22.2,hum=36.4,co=17i 1719967200", "home,room=Kitchen temp=22.7,hum=36.5,co=26i 1719967200" ); /** * Write each record separately to InfluxDB with timestamp * precision in seconds. * If no error occurs, print a success message. * */ for (String record : records) { client.writeRecord(record, new WriteOptions(null, null, WritePrecision.S)); System.out.printf("Data has been written successfully: %s%n", record); } } } } ``` The sample code does the following: 1. Imports the following classes: - `java.util.List`; - `com.influxdb.v3.client.InfluxDBClient` - `com.influxdb.v3.client.write.WriteParameters` - `com.influxdb.v3.client.write.WritePrecision` 2. Calls `InfluxDBClient.getInstance()` to instantiate a client configured with InfluxDB credentials. - **`host`**: your InfluxDB Cloud Serverless region URL - **`database`**: the name of the InfluxDB Cloud Serverless bucket to write to - **`token`**: a [token](/influxdb3/cloud-serverless/admin/tokens/) with write access to the specified bucket. *Store this in a secret store or environment variable to avoid exposing the raw token string.* 3. Defines a list of line protocol strings where each string represents a data record. 4. Calls the client’s `writeRecord()` method to write each record separately to InfluxDB. **Because the timestamps in the sample line protocol are in second precision, the example passes the [`WritePrecision.S` enum value](https://github.com/InfluxCommunity/influxdb3-java/blob/main/src/main/java/com/influxdb/v3/client/write/WritePrecision.java) as the `precision` argument to set the write [timestamp precision](/influxdb3/cloud-serverless/reference/glossary/#timestamp-precision) to seconds.** 8. In your editor, open the `App.java` file (created by Maven) and replace its contents with the following sample code: ```java // App.java package com.influxdbv3; /** * Execute the client functions. * */ public class App { /** * @param args * @throws Exception */ public static void main(final String[] args) throws Exception { // Write data to InfluxDB 3. Write.writeLineProtocol(); } } ``` - The `App` class and `Write` class are part of the same `com.influxdbv3` package (your project **groupId**). - `App` defines a `main()` function that calls `Write.writeLineProtocol()`. 9. In your terminal or editor, use Maven to install dependencies and compile the project code–for example: ```bash mvn compile ``` 10. In your terminal or editor, execute `App.main()` to write to InfluxDB–for example, using Maven: ```sh mvn exec:java -Dexec.mainClass="com.influxdbv3.App" ``` If successful, the output is the success message; otherwise, error details and the failure message. [](#view-the-written-data) View the written data | time | room | co | hum | temp | | --- | --- | --- | --- | --- | | 2022-01-01T08:00:00Z | Kitchen | 0 | 35.9 | 21 | | 2022-01-01T09:00:00Z | Kitchen | 0 | 36.2 | 23 | | 2022-01-01T10:00:00Z | Kitchen | 0 | 36.1 | 22.7 | | 2022-01-01T11:00:00Z | Kitchen | 0 | 36 | 22.4 | | 2022-01-01T12:00:00Z | Kitchen | 0 | 36 | 22.5 | | 2022-01-01T13:00:00Z | Kitchen | 1 | 36.5 | 22.8 | | 2022-01-01T14:00:00Z | Kitchen | 1 | 36.3 | 22.8 | | 2022-01-01T15:00:00Z | Kitchen | 3 | 36.2 | 22.7 | | 2022-01-01T16:00:00Z | Kitchen | 7 | 36 | 22.4 | | 2022-01-01T17:00:00Z | Kitchen | 9 | 36 | 22.7 | | 2022-01-01T18:00:00Z | Kitchen | 18 | 36.9 | 23.3 | | 2022-01-01T19:00:00Z | Kitchen | 22 | 36.6 | 23.1 | | 2022-01-01T20:00:00Z | Kitchen | 26 | 36.5 | 22.7 | | 2022-01-01T08:00:00Z | Living Room | 0 | 35.9 | 21.1 | | 2022-01-01T09:00:00Z | Living Room | 0 | 35.9 | 21.4 | | 2022-01-01T10:00:00Z | Living Room | 0 | 36 | 21.8 | | 2022-01-01T11:00:00Z | Living Room | 0 | 36 | 22.2 | | 2022-01-01T12:00:00Z | Living Room | 0 | 35.9 | 22.2 | | 2022-01-01T13:00:00Z | Living Room | 0 | 36 | 22.4 | | 2022-01-01T14:00:00Z | Living Room | 0 | 36.1 | 22.3 | | 2022-01-01T15:00:00Z | Living Room | 1 | 36.1 | 22.3 | | 2022-01-01T16:00:00Z | Living Room | 4 | 36 | 22.4 | | 2022-01-01T17:00:00Z | Living Room | 5 | 35.9 | 22.6 | | 2022-01-01T18:00:00Z | Living Room | 9 | 36.2 | 22.8 | | 2022-01-01T19:00:00Z | Living Room | 14 | 36.3 | 22.5 | | 2022-01-01T20:00:00Z | Living Room | 17 | 36.4 | 22.2 | **Congratulations!** You have written data to InfluxDB. With data now stored in InfluxDB, let’s query it. [Set up InfluxDB](/influxdb3/cloud-serverless/get-started/setup/) [Query data](/influxdb3/cloud-serverless/get-started/query/) #### Related - [Write data to InfluxDB](/influxdb3/cloud-serverless/write-data/) - [Best practices for writing data](/influxdb3/cloud-serverless/write-data/best-practices/) - [Line protocol](/influxdb3/cloud-serverless/reference/syntax/line-protocol/) - [Telegraf documentation](/telegraf/v1/)