: Learn how the basic Java database connection works.
Add these properties to your application.properties (Spring Boot):
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By implementing optimized identifier strategies, resolving N+1 query patterns, configuring explicit JDBC batch sizes, and choosing DTO projections for read-only workloads, developers can build Java applications capable of handling massive transactional volumes with minimal latency.
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Transforming single SQL statements into batched execution to minimize network round-trips.
When data contention is extreme (e.g., inventory management or financial ledgers), optimistic retries degrade performance. The book teaches how to selectively apply explicit PESSIMISTIC_WRITE locks ( SELECT ... FOR UPDATE ) to block competing transactions at the database level, ensuring deterministic write isolation. Transaction Isolation Levels