async_queue.md

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Building an Asynchronous Queue with Redis

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Summary

You can implement an asynchronous queue using Redis primitives such as zset, list and Pub/Sub.

• Use a zset as a delayed/scheduled queue (score = scheduled timestamp).
• Use a list to store queue payloads (actual messages or IDs).
• Use Pub/Sub to notify workers when new messages are available.

This combination provides delayed delivery, durable storage (depending on persistence), and push notifications for consumers.