Level Up Your Serverless Game
summary
Walks through ten practical levels on AWS Lambda showing runnable examples: a NodeJS AWS Lambda handler, enabling DynamoDB tracing via application signals and service traces, and viewing flame charts for invocations. Demonstrates moving DB client initialization outside the handler to eliminate cold start overhead and reports a warm start improvement of about 3 seconds (~90%). Covers cold start patterns, per-invocation time limits (example 6s) and using context.getRemainingTimeMillis to set IO timeouts, plus mention of Power Tools for Lambda.
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chapters (7)
- 0:00Serverless computing intro
- 4:36Lena’s serverless journey
- 7:25First serverless function
- 11:00Tracing requests
- 16:09Cold starts explained
- 21:36Handling timeouts
- 25:49Bonus tips
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