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AWS Lambda Advanced Patterns

April 5, 2026

Lambda Power Tools & Patterns

Optimize Lambda performance, cold starts, error handling.

Optimization Techniques

Powertools for JavaScript:
const logger = Logger.getLogger();
const tracer = Tracer.getLogger();

Environment Variables:
Powertools:ServiceName=my-app
POWERTOOLS_LOG_LEVEL=INFO

Cold Start Mitigation:
- Provisioned Concurrency
- SnapStart (Java)
- Keep-alive connections

Error Handling:
Dead Letter Queues (SQS/SNS)
Async invocation retries (2 retries)

Best Practices

  • Init outside handler (global)
  • Minimize deployment package
  • Extension (tracing/logs)
  • ARM64 (25% faster/cheaper)
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