Django middleware for request ID tracking

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Adding unique request IDs helps trace logs across distributed systems. I generate a UUID for each request and attach it to both the request object and response headers. I also add it to the logging context so all log entries for that request include the ID. This makes debugging much easier—I can grep logs for a specific request ID to see its full lifecycle. For microservices, I propagate the request ID to downstream services. This simple middleware provides huge value for production debugging and monitoring.