What to do if a worker crashes during task processing?

If a worker crashes during task processing, it is necessary to ensure reliability and reprocessing. Main approaches:

• Use a queue system with acknowledgment. If the worker crashes, the task remains in the queue and will be processed again by another worker.
• Implement monitoring and restart mechanisms for workers (e.g., using systemd, supervisord, or Kubernetes).
• Log the task state and processing progress so that upon restart, processing can continue from where it left off.
• If necessary, use transactions or idempotent operations to prevent errors or duplication during reprocessing.

Thus, the architecture should be fault-tolerant and provide automatic recovery and reprocessing of tasks.