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> an incremental rebuild [...] should not take a significant amount of time.

> But actually a config change is just as dangerous as a code change, and the same level of testing is usually appropriate

Points well made, unarguably so

> In my experience many - perhaps most - production outages tend to be caused by "config changes".

I have no comparable experience but it sounds all too plausible and I shall bear that strongly in mind henceforth.

> "Config" tends to not be treated the same way [as code] [...]

From there to the end is brilliant. Thanks so much for such an excellent response. I'm going to print this out and keep it.



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