Spring Boot in Production: What Real Experience Teaches That Docs Don't

Spring Boot's official docs paint a rosy picture where everything just works. But in real production, especially on Railway, that picture shatters against harsh JVM tuning realities and logs full of surprises.

What Manuals Hide

Three years running Spring Boot in production at Lakaut AC taught us lessons the hard way. Here are the key takeaways:

• Default JVM settings are evil. Heap, garbage collector, thread pools — all need tuning for your specific load, or your app will crash on the first stress test.
• Logs are more than text. Without aggregation and structuring (JSON logs, ELK stack), you'll drown in error hunting.
• Metrics matter more than you think. Prometheus + Grafana save you from late-night incidents when the app slows down for no apparent reason.

Developer Pain

Remember proudly deploying your first Spring Boot app, thinking "it configures itself"? Then — OOM, endless GC pauses, mysterious Connection Timeouts. Familiar pain? Exactly.

METABYTE Studio Comment

Spring Boot is powerful, but without proper setup it becomes a headache. We know how to make it run stable in production and are happy to share experience — but better leave it to pros to avoid learning on your own mistakes.