How can I use logging to effectively debug 'There was an error processing the request' errors in a production environment?

Use a robust logging framework (e.g., Log4j, SLF4J) to log errors at appropriate levels (e.g., ERROR). Include contextual information like user ID, request ID, timestamp, and relevant request parameters. Ensure logs are centralized and easily searchable. Avoid logging sensitive information. Implement log rotation to prevent logs from consuming excessive disk space.