1[← Logger](7-Logger-EN.md) | Concurrent[(中文)](8-Concurrent-CN.md) | [Asynchronous Call →](9-Asynchronous-EN.md) 2*** 3 4## Concurrent Request 5 6* Due to the concurrency nature of the Go language, we recommend that you control the concurrent requests for the SDK at the application level. 7* In order to facilitate your use, we also provide a direct use of concurrent invocation mode, the relevant concurrency control by the SDK internal implementation. 8 9### Open SDK Client's concurrent function. 10 11```go 12// Maximum Running Vusers 13poolSize := 2 14// The maximum number of requests that can be cached 15maxTaskQueueSize := 5 16 17// Enable asynchronous functionality at creation time 18config := sdk.NewConfig() 19 .WithEnableAsync(true) 20 .WithGoRoutinePoolSize(poolSize) // Optional,default:5 21 .WithMaxTaskQueueSize(maxTaskQueueSize) // Optional,default:1000 22ecsClient, err := ecs.NewClientWithOptions(config) 23 24// It can also be opened after client is initialized 25client.EnableAsync(poolSize, maxTaskQueueSize) 26``` 27 28*** 29[← Logger](7-Logger-EN.md) | Concurrent[(中文)](8-Concurrent-CN.md) | [Asynchronous Call →](9-Asynchronous-EN.md)