Redis Lists and Simple Queues

Short summary

A tutorial on using Redis lists for simple queues and capped recent-item feeds. LPUSH combined with RPOP creates a FIFO queue, while BRPOP enables efficient blocking waits instead of polling. Plain lists provide at-most-once delivery, but LMOVE to a processing list adds basic crash recovery. For reliable delivery guarantees, acknowledgements, and consumer groups, Redis streams are the better choice. Lists also excel as self-maintaining bounded feeds using LPUSH and LTRIM.

• •Use LPUSH+RPOP for FIFO queues and BRPOP for efficient blocking waits
• •LMOVE to a processing list adds basic crash recovery for at-most-once queues
• •Use LPUSH+LTRIM for capped recent-item feeds; switch to streams for reliable delivery

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