Daily architecture work and learning summaries. Not seeking lengthy articles—only real practical experience.
The article explains how intermittent 503 errors in a Java service are caused by long‑lasting Full GC pauses, walks through log analysis, shows how to use jstat, jcmd and MAT to pinpoint the problem, and provides a complete set of JVM tuning flags to eliminate the issue.
This article explains why batch tasks significantly affect system and database performance, and outlines three key strategies—task simplification, resource and performance tuning, and proactive monitoring with fault recovery—to design and optimize batch jobs effectively in enterprise development.
This guide outlines core principles and practical solutions for building resilient backend systems, covering fast‑failure handling, automatic retries with exponential back‑off, circuit‑breaker usage, idempotency, batch job strategies, online transaction patterns, and robust message‑queue processing.
