Follow how virtual threads work jvm with the key steps, checks, and trade-offs that matter when applying it in practice.
If JMH says a method is inlined and benchmarks fast, the assumption is that the same method will be fast in production.
Most readers expect 'gRPC is much faster and smaller than REST, so use gRPC for microservices and REST only, but on a modern Spring Boot 3 + Java 21.
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The single change that trips up most teams on a Mockito 5 migration has nothing to do with API signatures. It's that mockito-core now ships with the.
Java records have been a permanent feature since Java 16, but the idioms you can build with them only became fully realized in Java 21 with the addition.
If you build a REST API that returns a list of resources without pagination, you are building a ticking time bomb.
So there I was, staring at a $42,000 licensing renewal invoice for Oracle JDK at 8 AM on a Tuesday. We had exactly three weeks to migrate 40 microservices.
I spent three days last month tracing a phantom data mutation in our billing system. The Spring Boot application logs showed Learn about Java Database.
So there I was, staring at my terminal at 1:30 AM. The screen just said > Configuring projects... and sat there. For four minutes.
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I still remember the collective groan when the "Big Rename" happened. You know the one. Moving from javax.* to jakarta.* packages. It was a necessary.
We had this perfectly good Spring Boot service—running on JDK 21.0.4—that worked fine on my M2 MacBook. But the second we pushed it to our staging.
Actually, I should clarify — I used to hate waiting. Whether it's standing in line for coffee or watching a spinner on a dashboard, waiting felt like a.
Actually, I should clarify — I looked at my node_modules folder the other day, and it was heavier than the rest of my operating system.
Well, I have to confess - I spent last Tuesday staring at a flame graph that made absolutely no sense. We had a microservice responsible for querying.