Adopt these logging best practices to ensure consistent, efficient, and meaningful logs:

  1. Use Lombok’s @Slf4j annotation instead of manually declaring loggers:
// Avoid this:
private static final Logger log = LoggerFactory.getLogger(YourClass.class);

// Prefer this:
@Slf4j
public class YourClass {
    // Logger field 'log' is automatically created
}
  1. Choose appropriate log levels based on the information’s importance:
  2. Log exceptions properly by passing the exception object as an argument:
// Avoid this:
try {
    // code
} catch (Exception e) {
    log.error("Operation failed.");
    e.printStackTrace(); // Redundant and can go to a different output stream
}

// Prefer this:
try {
    // code
} catch (Exception e) {
    log.error("Operation failed.", e); // Includes stack trace automatically
}

Following these practices makes logs more consistent, easier to search, and more valuable for debugging.