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Engineering With Java

Engineering With Java: Real-World Java and spring Boot Newsletter for Backend Engineers, Real-World Problems, Explained Through Interview Questions

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Senior Java Interview: Bug Fix in a Generic Repository

Understanding wildcard variance in Java generics — and why you can never have both safe reads and safe writes at once

Spring Boot Interview Question : Building Trending Search Queries at Scale

Everyone searched for the same thing. Kafka sent it to the same place. Chaos followed

Engineering With Java: Digest #99

Performance, platform internals, and a Spring Boot 4 deep dive

Spring Boot Interview Question : Rolling Out New Feature

The feature flag changed. Now the real question: who told your application?

Java Interview Question - The ConcurrentHashMap Trap

It was thread-safe… until the threads showed up

Engineering With Java: Digest #98

From governed AI agents to post-quantum crypto: this week's essential Java reads

Spring Boot Interview Question - @Async Broke Our Audit Logs

Your request remembers everything. @Async remembers nothing

Spring Boot Interview Quiz: What Happens to the Transaction?

Your database knows the answer... do you?

Engineering With Java: Digest #97

JIT, GPUs, and Karl the Fog: Everything Java Learned to Do Before Coffee

Spring Boot Interview: The Event That Lied About Being Saved

Your email was sent... your order wasn't.

Spring Boot Interview Quiz : Why Is CPU Low but Latency High?

Can you spot the hidden scalability bottleneck?