How do retry logic and exponential backoff work within AWS SDKs, and why are they important?

AWS SDKs include built in retry logic that automatically retries failed requests, such as those caused by temporary throttling or network issues, using an exponential backoff strategy that gradually increases the wait time between retry attempts, which helps applications gracefully handle transient errors and avoid overwhelming an AWS service that might already be experiencing high load, without requiring developers to manually implement this resilience logic themselves.

import boto3
from botocore.config import Config
config = Config(retries={'max_attempts': 5, 'mode': 'adaptive'})
client = boto3.client('dynamodb', config=config)