🔧 Java Spring Boot Logging: Log Levels, Logback, JSON Logs & Production Best Practices

Production-Grade Logging in Spring Boot: A Complete Guide to Logging Levels, Files, JSON Logs, Correlation IDs, and Best Practices


Logging is one of the most important parts of a production backend system.

When everything works, you may not think much about logs.

But when production starts returning 500 errors at 2 AM, a customer reports that...