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Release It! by Michael T. Nygard

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Pattern5.4 Steady State

Roget’s Thesaurus (3rd ed.) offers the following definition for the word fiddling: “To handle something idly, ignorantly, or destructively.” It offers helpful synonyms such as fool, meddle, tamper, tinker, and monkey. Fiddling is often followed by the “ohnosecond”: that very short moment in time during which you realize that you have pressed the wrong key and brought down a server, deleted vital data, or otherwise damaged the peace and harmony of stable operations.

Every single time a human touches a server is an opportunity for unforced errors.[51]

It’s best to keep people off of production systems to the greatest extent ...

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