Definition of "idempotence" [idempotence]

• A quality of an action such that repetitions of the action have no further effect on outcome – being idempotent. (noun)

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• "The idempotence guarantee means you can simply issue the request again."
• "Atomicity, statelessness, idempotence, and parallelism: that's your ticket to code that's ready for both modern multicore chips and the future of distributed -- or cloud -- computing."
• "In this first half of a two-part article, Appistry engineer Guerry Semones gets you started with the four design principles for writing cloud-ready, multicore friendly code: atomicity, statelessness, idempotence, and parallelism."