@aws-sdk/middleware-retry

Default Retry Strategy

This feature allows you to use the default retry strategy provided by the AWS SDK. The default strategy includes exponential backoff and jitter to handle transient errors.

const { S3Client } = require('@aws-sdk/client-s3');
const { defaultRetryStrategy } = require('@aws-sdk/middleware-retry');

const client = new S3Client({
  region: 'us-west-2',
  retryStrategy: defaultRetryStrategy()
});

Custom Retry Strategy

This feature allows you to define a custom retry strategy. In this example, the custom strategy retries failed requests up to 3 times.

const { S3Client } = require('@aws-sdk/client-s3');
const { StandardRetryStrategy } = require('@aws-sdk/middleware-retry');

const customRetryStrategy = new StandardRetryStrategy(async () => 3); // Retry up to 3 times

const client = new S3Client({
  region: 'us-west-2',
  retryStrategy: customRetryStrategy
});

Adaptive Retry Strategy

This feature allows you to use the adaptive retry strategy, which adjusts the retry behavior based on the current load and error rates. This can help optimize the retry logic for varying conditions.

const { S3Client } = require('@aws-sdk/client-s3');
const { AdaptiveRetryStrategy } = require('@aws-sdk/middleware-retry');

const adaptiveRetryStrategy = new AdaptiveRetryStrategy();

const client = new S3Client({
  region: 'us-west-2',
  retryStrategy: adaptiveRetryStrategy
});