Sessions, locks and pub/sub are three very different contracts with the same server. Knowing which guarantees each one lacks is the difference between a cache and an outage.
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Where does Redis actually earn its keep in production, and which of its features disappoint teams?
Sessions, locks and pub/sub are three very different contracts with the same server. Knowing which guarantees each one lacks is the difference between a cache and an outage.
Updated Sep 2026 · Grounded in researched DevOps, SRE and platform engineering interview loops, written to a senior-engineer editorial bar, and never padded to hit a word count.
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