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Go SDK Reference

The Go SDK provides a native Go client for Zilliz Cloud. The current v2 module is maintained under the client/ directory of the main Milvus repository and exposes the milvusclient package for connection management, collection operations, data writes, vector search, and cluster administration.

Features​

  • Idiomatic Go client — Create a milvusclient.Client with context.Context and a typed ClientConfig.
  • Option-based requests — Configure operations with constructors such as NewListCollectionOption() and chainable option methods.
  • Collection and index management — Define schemas, create collections and indexes, and manage collection loading.
  • Data and vector operations — Insert, upsert, delete, query, search, and run hybrid searches with typed vectors and result sets.
  • Cloud administration — Manage databases, partitions, aliases, users, roles, and resource groups available to your cluster.
  • Go ecosystem integration — Pass contexts and optional gRPC call options through SDK operations and close clients explicitly when work is complete.

Installation​

Install the current v2 module and its dependencies with go get:

bash
go get -u github.com/milvus-io/milvus/client/v2

Use the Go version required by the selected SDK module's go.mod file.

Connect to Zilliz Cloud​

Copy the public endpoint from the cluster Connect card and use an API key or cluster credential as the token.

go
import (
	"context"
	"fmt"
	"log"

	"github.com/milvus-io/milvus/client/v2/milvusclient"
)

ctx, cancel := context.WithCancel(context.Background())
defer cancel()

cli, err := milvusclient.New(ctx, &milvusclient.ClientConfig{
	Address: "YOUR_CLUSTER_ENDPOINT",
	APIKey:  "YOUR_CLUSTER_TOKEN",
})
if err != nil {
	log.Fatal(err)
}
defer cli.Close(ctx)

collectionNames, err := cli.ListCollections(
	ctx,
	milvusclient.NewListCollectionOption(),
)
if err != nil {
	log.Fatal(err)
}

fmt.Println(collectionNames)

Resources​

Overview

The Go SDK provides a native Go client for Zilliz Cloud. The current v2 module is maintained under the client/ directory of the main Milvus repository and exposes the milvusclient package for connection management, collection operations, data writes, vector search, and cluster administration.

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