Aws Lambda Java Integration
Solid foundation for getting Java running on Lambda without the usual multi-second cold start pain. Covers both Micronaut (sub-1s with DI) and raw Java (sub-500ms minimal) approaches with actual handler examples and deployment configs for Serverless Framework and SAM. The connection management patterns are the real value here, showing you how to initialize AWS clients once as static fields instead of recreating them per invocation. Includes the deployment YAMLs you actually need and warns you about the Java-specific gotchas like classpath scanning and oversized JARs. If you're stuck choosing between framework convenience and cold start performance for a serverless Java project, this gives you both paths with realistic numbers.
- skills.sh installs
- 3.7K
- GitHub stars
- 369
- last updated
- Aug 21, 2026
Install
$ npx -y skills add giuseppe-trisciuoglio/developer-kit --skill aws-lambda-java-integration --agent claude-codeInstalls into .claude/skills of the current project.
Files
AWS Lambda Java Integration
Patterns for creating high-performance AWS Lambda functions in Java with optimized cold starts.
Overview
This skill provides complete patterns for AWS Lambda Java development, covering two main approaches:
- Micronaut Framework - Full-featured framework with AOT compilation, dependency injection, and cold start < 1s
- Raw Java - Minimal overhead approach with cold start < 500ms
Both approaches support API Gateway and ALB integration with production-ready configurations.
When to Use
- Deploying Java functions to AWS Lambda
- Optimizing cold starts below 1 second
- Choosing between Micronaut and Raw Java approaches
- Configuring API Gateway or ALB integration
- Setting up CI/CD pipelines for Java Lambda
Instructions
1. Choose Your Approach
| Approach | Cold Start | Best For | Complexity |
|---|---|---|---|
| Micronaut | < 1s | Complex apps, DI needed, enterprise | Medium |
| Raw Java | < 500ms | Simple handlers, minimal overhead | Low |
Validate: Confirm the approach fits your use case before proceeding.
2. Project Structure
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- Repository
- github.com/giuseppe-trisciuoglio/developer-kit
- Categories
- Backend & APIs, DevOps & CI/CD, Release Management, Debugging, Cloud & Infrastructure, Java & JVM
- First seen
- May 16, 2026
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