The GitHub Availability Report

Re:The GitHub Availability Report by nickjj on Thursday July 16, 2020 @07:11AM (#23857728)

> GitHub’s monitoring systems currently alert when tables hit 70% of the primary key size

This is interesting. I wonder if they query the key size every N seconds as part of their monitor, or if they report the key size to the monitor on write.

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Re:The GitHub Availability Report by t3rabytes on Thursday July 16, 2020 @08:03AM (#23858104)

We have a similar setup that just queries for the auto increment value every X period of time, creates next to zero additional load to do so.

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Re:The GitHub Availability Report by nickjj on Thursday July 16, 2020 @08:34AM (#23858321)

Thanks.

Yeah that seems sane. The odds of you exceeding your monitoring threshold in 1 interval seems close to impossible too. Such as going from 70% to 100% in 30 seconds or whatever your monitor interval is set to.

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