AWS Lambda now supports Java 25
Compute Blog
This article announces AWS Lambda support for Java 25, now generally available as a managed runtime and container base image.
- Java 25 includes primitive types in patterns, module import declarations, flexible constructor bodies
- Generational Shenandoah garbage collector improves throughput and memory utilization
- AOT caches replace Class Data Sharing for faster cold starts by default
- Tiered compilation no longer stops at C1 for SnapStart and Provisioned Concurrency
- Log4Shell emergency patch removed; requires Log4j 2.17.0 or later
- Deploy via AWS Console, SAM, CDK, container images, or infrastructure as code tools
- Performance improvements optimized for Lambda workloads and cold start times
Java 25 Lambda runtime delivers new language features and performance enhancements for building efficient serverless applications.
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