advanced~4h
Production Engineering — HikariCP, SQL Logging & Hibernate Statistics
Every technique from every earlier chapter is only verifiable in a real running application through the specific visibility tools this chapter covers — HikariCP tuning, SQL logging, and Hibernate statistics are your dashboard for an otherwise invisible persistence layer.
Learning objectives
- Explain what HikariCP does and diagnose connection pool exhaustion back to its most common real root cause.
- Use SQL logging to verify a fetching-strategy fix (JOIN FETCH, batch fetch) actually works as intended.
- Enable and interpret Hibernate statistics for query counts and cache hit ratio in a production-monitoring context.
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Production Engineering — HikariCP, SQL Logging & Hibernate Statistics