Redis Smart Cache is an open-source library that adds caching to any platform, application, or microservice using JDBC-compliant drivers, allowing developers to optimize performance without changing code. It provides a simple solution for cache-aside optimization and reduces complexity by providing insights into queries flowing through SQL-based drivers. With Redis Smart Cache, users can identify worst-performing queries, enable query caching, and observe ongoing query performance without refactoring their code. The library supports various databases and platforms, including Java, Oracle, IBM DB2, Microsoft SQL Server, PostgreSQL, MySQL, Snowflake, BigQuery, Tableau, and others. It offers a command-line interface (CLI) for managing Redis Smart Cache, allows users to view application queries and metrics, and provides pre-built Grafana dashboards for monitoring performance.