Java
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Why this exists Nearly every Java service talks to a relational database, and database access is where most production performance and stability problems begin: slow queries, leaked connections, a pool that is too big…
JDBC and Connection Pools: Prepared Statements, Transactions, HikariCP Sizing and Pool Exhaustion
Query a database safely from Java: prepared statements against SQL injection, try-with-resources, transactions with rollback, HikariCP settings that matter, sizing a pool, and diagnosing the Connection is not available error.
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