Event Sources & Triggers. Lambda integrates with virtually every AWS service. The event payload structure varies by source — knowing the shape of the event object for each trigger is critical for writing correct handler …
ReadLambda Deployment & Configuration. Lambda can be deployed as a .zip package or a container image. Layers enable code sharing. Versions and aliases enable safe production deployments. AWS SAM and the Serverless Framework …
ReadLambda Fundamentals. AWS Lambda runs code in response to events without managing servers. Understanding the handler signature, context object, and execution environment lifecycle is the foundation for writing reliable La…
ReadLambda Performance & Best Practices. Cold starts, connection reuse, error handling, and VPC gotchas are the main operational pain points for Lambda in production. Addressing these systematically leads to faster, cheaper,…
ReadAWS Lambda: Fundamentals & Execution Model. Lambda is AWS's serverless compute service. You provide code; AWS runs it in response to events, manages scaling, and charges only for compute time used. No servers to provisio…
ReadLambda: Performance, Concurrency & Cold Starts. Cold Start Anatomy. A cold start happens when Lambda initializes a new execution environment. The INIT phase: download code/container → start runtime → run module-level cod…
ReadLambda: Deployment, Monitoring & Interview Questions. Deployment Methods. # ZIP deployment (for code <250MB unzipped) zip -r function.zip . --exclude "*.test.js" "node_modules/.cache/*" aws lambda update-function-code \ …
ReadLambda: Event Sources & Integrations. Lambda can be triggered synchronously (caller waits for response), asynchronously (fire and forget), or via polling (Lambda polls the source).. Invocation Types. Synchronous: API Gat…
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