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Indexing and query plans Design indexes to match query WHERE clauses and JOIN keys. Use EXPLAIN/EXPLAIN ANALYZE to inspect plans. Beware of over-indexing: write amplification and maintenance cost. Consider composite indexes and covering indexes where appropriate.

If you're a Java developer looking to improve your application's performance and scalability, I highly recommend the "High-Performance Java Persistence PDF 2.0". This guide will provide you with the knowledge and expertise needed to optimize your persistence layer and take your application to the next level.

Generic dialects do not leverage vendor-specific optimizations, such as PostgreSQL's JSONB data types, Oracle's advanced analytical functions, or SQL Server's bulk insert hints. Master Connection and Transaction Management

Hitting the database should always be the last resort. A robust caching strategy absorbs the heavy lifting of repetitive read operations.