Client Initialization Best Practices (Go)

Core Rules

• Client is goroutine-safe — safe to share across goroutines without additional synchronization.
• Use singleton pattern — do NOT create new client instances per request. Frequent client creation wastes resources.
• Prefer explicit endpoint over region-based endpoint resolution.

Recommended Client Creation

import (
    "os"
    "sync"

    openapi "github.com/alibabacloud-go/darabonba-openapi/v2/client"
    ecs "github.com/alibabacloud-go/ecs-20140526/v3/client"
    "github.com/alibabacloud-go/tea/tea"
)