如需與 Amazon Timestream for LiveAnalytics 類似的功能，請考慮使用 Amazon Timestream for InfluxDB。它提供簡化的資料擷取和單一位數毫秒查詢回應時間，以進行即時分析。[在這裡](https://docs.aws.amazon.com//timestream/latest/developerguide/timestream-for-influxdb.html)進一步了解。

本文為英文版的機器翻譯版本，如內容有任何歧義或不一致之處，概以英文版為準。

# 寫入 SDK 用戶端
<a name="code-samples.write-client"></a>

您可以使用下列程式碼片段為寫入 SDK 建立 Timestream 用戶端。寫入 SDK 用於執行 CRUD 操作，並將時間序列資料插入 Timestream。

**注意**  
這些程式碼片段是以 [GitHub](https://github.com/awslabs/amazon-timestream-tools/blob/master/sample_apps) 上的完整範例應用程式為基礎。如需如何開始使用範例應用程式的詳細資訊，請參閱[範例應用程式](sample-apps.md)。

------
#### [  Java  ]

```
    private static AmazonTimestreamWrite buildWriteClient() {
        final ClientConfiguration clientConfiguration = new ClientConfiguration()
                .withMaxConnections(5000)
                .withRequestTimeout(20 * 1000)
                .withMaxErrorRetry(10);

        return AmazonTimestreamWriteClientBuilder
                .standard()
                .withRegion("us-east-1")
                .withClientConfiguration(clientConfiguration)
                .build();
    }
```

------
#### [  Java v2  ]

```
    private static TimestreamWriteClient buildWriteClient() {
        ApacheHttpClient.Builder httpClientBuilder =
                ApacheHttpClient.builder();
        httpClientBuilder.maxConnections(5000);

        RetryPolicy.Builder retryPolicy =
                RetryPolicy.builder();
        retryPolicy.numRetries(10);

        ClientOverrideConfiguration.Builder overrideConfig =
                ClientOverrideConfiguration.builder();
        overrideConfig.apiCallAttemptTimeout(Duration.ofSeconds(20));
        overrideConfig.retryPolicy(retryPolicy.build());

        return TimestreamWriteClient.builder()
                .httpClientBuilder(httpClientBuilder)
                .overrideConfiguration(overrideConfig.build())
                .region(Region.US_EAST_1)
                .build();
    }
```

------
#### [  Go  ]

```
tr := &http.Transport{
        ResponseHeaderTimeout: 20 * time.Second,
        // Using DefaultTransport values for other parameters: https://golang.org/pkg/net/http/#RoundTripper
        Proxy: http.ProxyFromEnvironment,
        DialContext: (&net.Dialer{
            KeepAlive: 30 * time.Second,
            DualStack: true,
            Timeout:   30 * time.Second,
        }).DialContext,
        MaxIdleConns:          100,
        IdleConnTimeout:       90 * time.Second,
        TLSHandshakeTimeout:   10 * time.Second,
        ExpectContinueTimeout: 1 * time.Second,
    }

    // So client makes HTTP/2 requests
    http2.ConfigureTransport(tr)

    sess, err := session.NewSession(&aws.Config{ Region: aws.String("us-east-1"), MaxRetries: aws.Int(10), HTTPClient: &http.Client{ Transport: tr }})
    writeSvc := timestreamwrite.New(sess)
```

------
#### [  Python  ]

```
write_client = session.client('timestream-write', config=Config(read_timeout=20, max_pool_connections = 5000, retries={'max_attempts': 10})) 
```

------
#### [  Node.js  ]

下列程式碼片段使用適用於 JavaScript v3 的 AWS SDK。如需如何安裝用戶端和用量的詳細資訊，請參閱 [Timestream Write Client - AWS SDK for JavaScript v3](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-timestream-write/index.html)。

此處顯示額外的命令匯入。建立用戶端不需要`CreateDatabaseCommand`匯入。

```
import { TimestreamWriteClient, CreateDatabaseCommand } from "@aws-sdk/client-timestream-write";
const writeClient = new TimestreamWriteClient({ region: "us-east-1" });
```

下列程式碼片段使用適用於 JavaScript V2 樣式的 AWS SDK。它以 [Node.js 範例應用程式為基礎，Amazon Timestream for LiveAnalytics 應用程式為 GitHub](https://github.com/awslabs/amazon-timestream-tools/tree/mainline/sample_apps/js)。

```
var https = require('https');
var agent = new https.Agent({
    maxSockets: 5000
});
writeClient = new AWS.TimestreamWrite({
        maxRetries: 10,
        httpOptions: {
            timeout: 20000,
            agent: agent
        }
    });
```

------
#### [  .NET  ]

```
var writeClientConfig = new AmazonTimestreamWriteConfig
{
    RegionEndpoint = RegionEndpoint.USEast1,
    Timeout = TimeSpan.FromSeconds(20),
    MaxErrorRetry = 10
};

var writeClient = new AmazonTimestreamWriteClient(writeClientConfig);
```

------

我們建議您使用下列組態。
+ 將 SDK 重試計數設定為 `10`。
+ 請使用 `SDK DEFAULT_BACKOFF_STRATEGY`。
+ `RequestTimeout` 設定為 `20` 秒。
+ 將最大連線設定為 `5000` 或更高。