An error occurred (ServiceUnavailableException) when calling the X operation

Workarounds

1. 92% success Implement exponential backoff with jitter and retry

   import boto3
   from botocore.config import Config
   
   config = Config(
       retries={'max_attempts': 10, 'mode': 'adaptive'}
   )
   client = boto3.client('s3', config=config)
   
   # For custom retry logic, use full jitter: sleep = random(0, min(cap, base * 2^attempt))
   # AWS SDK adaptive mode handles this automatically.

   Sources: https://docs.aws.amazon.com/general/latest/gr/api-retries.html

2. 90% success Check AWS Health Dashboard for ongoing service incidents

   Check AWS Health Dashboard for ongoing service incidents

   Sources: https://health.aws.amazon.com/health/status

3. 78% success If persistent, try a different AWS region as failover

   # Switch to a different region temporarily:
   aws s3 ls --region us-west-2
   
   # Or set in code:
   client = boto3.client('s3', region_name='us-west-2')
   
   # Check which regions the service supports:
   aws ec2 describe-regions --query 'Regions[].RegionName'
   
   Note: data residency and latency may change. Only use as temporary failover.

   Sources: https://docs.aws.amazon.com/general/latest/gr/rande.html