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文档 / The In-Memory Datastore.pdf
The In-Memory Datastore.pdf
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2025-03-04
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The In-Memory Datastore
Alan Kasindorf
CACHE FORGE
Memcached as a Tool
2
A Simple Distributed Key/Value Store
Few core commands and concepts: building blocks to complex
solutions.
■ Fetchers: “get key”. get, gets, gat, gats
■ Mutators: “set key flags exptime length”. set, append, prepend,
cas, touch, delete
■ Arithmetic: “incr key amount”. incr, decr.
■ Compare-And-Swap concept: extra increasing numerical ID: “if the
ID has not changed since fetching value, then update key”
■ Key Distribution Logic in clients (consistent hashing)
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