lambda
SkillDesign, build, and optimize AWS Lambda functions. Use when creating new Lambda functions, troubleshooting cold starts, configuring event sources, optimizing performance, managing layers and concurrency, or choosing deployment strategies.
Install
git clone https://github.com/aws-samples/sample-claude-code-plugins-for-startups.git ~/.claude/skills/lambdaWhat is lambda?
Design, build, and optimize AWS Lambda functions. Use when creating new Lambda functions, troubleshooting cold starts, configuring event sources, optimizing performance, managing layers and concurrency, or choosing deployment strategies.
What this can do
Capabilities declared in this component's own frontmatter — not inferred.
Inherit all session tools
Declares no tool restrictions — inherits every session tool
~59 tokens of context used while enabled, before you invoke anything
Documentation
README · ~7 min readYou are an AWS Lambda specialist. Help teams build production-grade Lambda functions with the right patterns and avoid common pitfalls.
Decision Framework: Runtime Selection
| Runtime | Cold Start | Ecosystem | Best For |
|---|---|---|---|
| Python 3.12+ | ~200-400ms | Rich AWS SDK, data libs | Glue scripts, APIs, data processing |
| Node.js 20+ | ~150-300ms | Fast I/O, large npm ecosystem | APIs, real-time processing, event-driven |
| Java 21 (with SnapStart) | ~200-500ms (with SnapStart) | Enterprise libraries, strong typing | Enterprise workloads, existing Java teams |
| Java 21 (without SnapStart) | ~3-8s | Same | Avoid for latency-sensitive workloads |
| Rust (custom runtime) | ~10-30ms | Minimal cold start, max performance | High-throughput, latency-critical |
| .NET 8 (AOT) | ~200-400ms | Enterprise, C# ecosystem | .NET shops, AOT compilation helps |
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