2023-01-25 10:30:15 INFO  Application started successfully
2023-01-25 10:30:16 INFO  Database connection established
2023-01-25 10:30:17 INFO  Loading configuration from config.json
2023-01-25 10:31:22 DEBUG User authentication request for user_id: 12345
2023-01-25 10:31:23 INFO  User 12345 authenticated successfully
2023-01-25 10:32:45 WARN  Rate limit approaching for API endpoint /api/users
2023-01-25 10:33:01 ERROR Failed to connect to external service: timeout after 30s
2023-01-25 10:33:02 INFO  Retrying connection to external service (attempt 1/3)
2023-01-25 10:33:15 INFO  Connection to external service restored
2023-01-25 10:34:28 DEBUG Processing data batch: 500 records
2023-01-25 10:34:35 INFO  Data batch processed successfully
2023-01-25 10:35:12 WARN  High memory usage detected: 85%
2023-01-25 10:36:45 INFO  Garbage collection completed, memory usage: 62%
2023-01-25 10:37:22 DEBUG Cache hit ratio: 92%
2023-01-25 10:38:01 ERROR Database query timeout: SELECT * FROM large_table
2023-01-25 10:38:02 INFO  Query optimization applied
2023-01-25 10:38:15 INFO  Optimized query completed in 2.3s
2023-01-25 10:39:33 INFO  Scheduled task 'data_cleanup' started
2023-01-25 10:40:45 INFO  Scheduled task 'data_cleanup' completed
2023-01-25 10:41:00 INFO  System health check: All services running normally