Documentation

Go Flight client

Apache Arrow for Go integrates with Go scripts and applications to query data stored in InfluxDB.

Use InfluxDB 3 client libraries

We recommend using the influxdb3-go Go client library for integrating InfluxDB 3 with your Go application code.

InfluxDB 3 client libraries wrap Apache Arrow Flight clients and provide convenient methods for writing, querying, and processing data stored in InfluxDB 3 Core. Client libraries can query using SQL or InfluxQL.

Flight SQL client

Example query using Flight SQL

The following example shows how to use the Arrow Flight SQL client for Go to query an InfluxDB 3 Core database:

  1. In your editor, open a new file named query.go and enter the following sample code:

    package main
    
    import (
      "context"
      "crypto/x509"
      "encoding/json"
      "fmt"
      "os"
    
      "github.com/apache/arrow/go/v14/arrow/flight/flightsql"
      "google.golang.org/grpc"
      "google.golang.org/grpc/credentials"
      "google.golang.org/grpc/metadata"
    )
    
    func dbQuery(ctx context.Context) error {
      url := "localhost:8181:443"
    
      // INFLUX_TOKEN is an environment variable you created for your database READ token
      token := os.Getenv("INFLUX_TOKEN")
      database := "get-started"
    
      // Create a gRPC transport
      pool, err := x509.SystemCertPool()
      if err != nil {
        return fmt.Errorf("x509: %s", err)
      }
      transport := grpc.WithTransportCredentials(credentials.NewClientTLSFromCert(pool, ""))
      opts := []grpc.DialOption{
        transport,
      }
    
      // Create query client
      client, err := flightsql.NewClient(url, nil, nil, opts...)
      if err != nil {
        return fmt.Errorf("flightsql: %s", err)
      }
    
      ctx = metadata.AppendToOutgoingContext(ctx, "authorization", "Bearer "+token)
      ctx = metadata.AppendToOutgoingContext(ctx, "database", database)
    
      // Execute query
      query := `SELECT
        *
      FROM
        home
      WHERE
        time >= '2022-01-01T08:00:00Z'
        AND time <= '2022-01-01T20:00:00Z'`
    
      info, err := client.Execute(ctx, query)
      if err != nil {
        return fmt.Errorf("flightsql flight info: %s", err)
      }
      reader, err := client.DoGet(ctx, info.Endpoint[0].Ticket)
      if err != nil {
        return fmt.Errorf("flightsql do get: %s", err)
      }
    
      // Print results as JSON
      for reader.Next() {
        record := reader.Record()
        b, err := json.MarshalIndent(record, "", "  ")
        if err != nil {
          return err
        }
        fmt.Println("RECORD BATCH")
        fmt.Println(string(b))
    
        if err := reader.Err(); err != nil {
          return fmt.Errorf("flightsql reader: %s", err)
        }
      }
    
      return nil
    }
    
    func main() {
      if err := dbQuery(context.Background()); err != nil {
        fmt.Fprintf(os.Stderr, "error: %v\n", err)
        os.Exit(1)
      }
    }

    The sample does the following:

    1. Imports the following packages:

      • context
      • crypto/x509
      • encoding/json
      • fmt
      • os
      • github.com/apache/arrow/go/v14/arrow/flight/flightsql
      • google.golang.org/grpc
      • google.golang.org/grpc/credentials
      • google.golang.org/grpc/metadata
    2. Creates a dbQuery function that does the following:

      1. Defines variables for InfluxDB credentials.

        • url: InfluxDB 3 Core cluster hostname and port (:443) (no protocol)
        • database: the name of the InfluxDB 3 Core database to query
        • token: a database token with read permission on the specified database. For security reasons, we recommend setting this as an environment variable rather than including the raw token string.
      2. Defines an opts options list that includes a gRPC transport for communicating with InfluxDB over the gRPC+TLS protocol.

      3. Calls the flightsql.NewClient() method with url and opts to create a new Flight SQL client.

      4. Appends the following InfluxDB credentials as key-value pairs to the outgoing context:

        • authorization: Bearer <INFLUX_TOKEN>
        • database: Database name
      5. Defines the SQL query to execute.

      6. Calls the client.execute() method to send the query request.

      7. Calls the client.doGet() method with the ticket from the query response to retrieve result data from the endpoint.

      8. Creates a reader to read the Arrow table returned by the endpoint and print the results as JSON.

    3. Creates a main module function that executes the dbQuery function.

  2. Enter the following commands to install all the necessary packages and run the program to query InfluxDB 3 Core:

    go get ./...
    go run ./query.go

View program output

For more information, see the Go Arrow Flight Client documentation.


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New in InfluxDB 3.5

Key enhancements in InfluxDB 3.5 and the InfluxDB 3 Explorer 1.3.

See the Blog Post

InfluxDB 3.5 is now available for both Core and Enterprise, introducing custom plugin repository support, enhanced operational visibility with queryable CLI parameters and manual node management, stronger security controls, and general performance improvements.

InfluxDB 3 Explorer 1.3 brings powerful new capabilities including Dashboards (beta) for saving and organizing your favorite queries, and cache querying for instant access to Last Value and Distinct Value caches—making Explorer a more comprehensive workspace for time series monitoring and analysis.

For more information, check out:

InfluxDB Docker latest tag changing to InfluxDB 3 Core

On November 3, 2025, the latest tag for InfluxDB Docker images will point to InfluxDB 3 Core. To avoid unexpected upgrades, use specific version tags in your Docker deployments.

If using Docker to install and run InfluxDB, the latest tag will point to InfluxDB 3 Core. To avoid unexpected upgrades, use specific version tags in your Docker deployments. For example, if using Docker to run InfluxDB v2, replace the latest version tag with a specific version tag in your Docker pull command–for example:

docker pull influxdb:2