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Memcached cheat sheet & developer notes

Memcached cheat sheet and 1 curated developer notes — core concepts, patterns, and interview prep. Maintained by the DevRecall team.

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01 · Memcached

Memcached Essentials

Memcached Essentials. Memcached is a distributed, in-memory key-value store built for one job: caching the result of expensive work (a database query, an API call, a rendered template) so the next request can skip it. It…

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Concepts to know for Memcached

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Caching StrategiesCache-aside, read-through, write-through and write-behind, keeping a cache correct with TTLs, invalidation and versioned keys, and surviving stampedes.Intermediate·13 minConsistent HashingWhy hash(key) mod N remaps everything when N changes, how a hash ring moves only 1/N of keys, what virtual nodes fix, and where rendezvous, jump and Maglev fit.Intermediate·12 min

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