2026-01-15 10:30:00,123 INFO [main] com.example.Application - Starting application
2026-01-15 10:30:01,456 DEBUG [main] com.example.config.ConfigLoader - Loading configuration
2026-01-15 10:30:02,789 INFO [pool-1-thread-1] com.example.service.UserService - User authenticated: user@example.com
2026-01-15 10:30:03,012 WARN [pool-1-thread-2] com.example.cache.CacheManager - Cache miss for key: user:123
2026-01-15 10:30:04,345 ERROR [http-nio-8080-exec-1] com.example.api.RestController - Request processing failed
java.lang.NullPointerException: Cannot invoke method on null object
at com.example.service.DataService.process(DataService.java:45)
at com.example.api.RestController.handleRequest(RestController.java:123)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
Caused by: java.sql.SQLException: Connection pool exhausted
at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:155)
... 10 more
2026-01-15 10:30:05,678 INFO [main] com.example.Application - Shutdown complete
2026-01-15 10:30:06.789 [worker-1] ERROR c.e.Worker - Worker task failed
