Java Tech Workshop

Oct 30, 2026 · Databases

HikariCP Connection Pool: Wait Timeout, Leak Detection & Sizing Strategies

This article analyzes HikariCP connection pool timeout and leak issues through a production incident, explaining connectionTimeout behavior, leakDetectionThreshold mechanics, pool sizing formulas, transaction scope impact on connection hold time, maxLifetime and keepaliveTime configuration for network infrastructure, and practical troubleshooting using thread dumps and pool metrics.