HashMap in Java — Internal Working, Production Failures, and the Guarantee You Should Never Trust Blindly
1. Production Problem The service was a transaction enrichment pipeline — a Java backend responsible for decorating payment events with […]
Backend Engineering
Java Concurrency & Multithreading — Deep Dive
If you’ve worked with backend systems, you’ve already used concurrency—whether you realized it or not.
But most developers face this gap:
– They know the terms
– But don’t fully understand why problems happen and how to reason about them
This blog bridges that gap.