Automated JDBC query caching with the AWS Advanced JDBC Wrapper

This article introduces the Remote Query Cache Plugin for the AWS Advanced JDBC Wrapper, which automates query result caching in ElastiCache for Valkey without requiring application rewrites.

• Plugin intercepts JDBC queries and caches results using SQL hints automatically
• Supports PostgreSQL, MySQL, and MariaDB with existing JDBC frameworks
• Use CloudWatch Database Insights to identify high-load SELECT queries for caching
• Configuration requires adding wrapper dependency, enabling plugin, and prefixing queries with cache hints
• Plugin manages cache keys, TTL expiration, serialization, and fallback to database automatically
• Emits metrics to CloudWatch and X-Ray for monitoring cache hit/miss rates
• Requires encryption in transit (cacheUseSSL=true) and supports IAM authentication

The plugin reduces database load for read-heavy workloads by transparently caching stable result sets with minimal code changes.