Redis Lists and Sets: Simple Queues, Reliable Queues, Recently Viewed Items and Tags
If a worker that took a job with RPOP crashes, the job is lost; LMOVE moves the job to a processing list in the same atomic step, so it can be recovered after a crash. With real output: the reliable queue and its limits, Redis 8.10's LMOVEM, BLPOP freezing an application for 3 seconds on a shared multiplexer, the last 10 viewed books with LTRIM, book tags in an intset and SINTER, weekly unique visitors with SUNIONCARD, and a 67 ms SMEMBERS on a big set.
14 Nov 2026
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11 min
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