Why Is My Java App’s GC Pausing for Seconds? G1 Tuning & MySQL Phantom Reference Fixes

This article analyzes a Java 1.8 application that suffers from long G1GC pauses caused by mis‑configured JVM flags and a MySQL driver that creates massive phantom references, explains the GC log findings, and presents concrete JVM, connection‑pool and driver‑upgrade solutions to eliminate the pauses.

g1gcjavajvm-tuning

0 likes · 31 min read

Why Is My Java App’s GC Pausing for Seconds? G1 Tuning & MySQL Phantom Reference Fixes

JD Retail Technology

Jun 27, 2023 · Backend Development

Analysis and Optimization of G1GC Long Pauses Caused by MySQL Driver Phantom References

The article investigates intermittent long G1GC pauses in a Java 1.8 application caused by mis‑configured G1 parameters and MySQL driver phantom references that retain many idle connections, then presents detailed log analysis and multiple remediation steps including JVM flag tuning, connection‑pool adjustments, and driver upgrades.

JVMg1gcmysql

0 likes · 30 min read

Analysis and Optimization of G1GC Long Pauses Caused by MySQL Driver Phantom References