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AWS Lambda notes for developers

Master AWS Lambda with a curated set of 2 developer notes — core concepts, patterns, and interview prep. Maintained by the DevRecall team.

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01 · AWS Lambda

Triggers, Cold Starts & Pricing

Triggers, Cold Starts & Pricing Event-Driven by Design Lambda runs code in response to a trigger — an API Gateway request, an S3 upload, an SQS message, a scheduled EventBridge rule — with no servers to provision or mana…

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02 · AWS Lambda

Architecture Patterns: API Gateway, Layers & Statelessness

Architecture Patterns: API Gateway, Layers & Statelessness Serverless API: API Gateway + Lambda API Gateway handles routing/auth/rate-limiting for incoming HTTP requests, invoking a Lambda function per request — a full R…

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