Debugging

A production incident investigation revealing how Spring Data Redis + Lettuce can leak connections when mixing SessionCallback and executeWithStickyConnection operations. Deep dive into connection management mechanisms, JFR analysis techniques, and practical solutions to prevent your Redis connection pool from becoming a black hole.

A deep dive into a mysterious production issue where exception logs mysteriously disappeared, leading us through Arthas debugging, Log4j2 internals, and the discovery that an exception’s getMessage() method was itself throwing exceptions due to Guava-Guice version incompatibility.