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Debugging MySQL lock errors in Ruby on Rails

by Tóth Péter —

New week new bug to hunt down! A day after our last deployment at work, a new type of error started rising like a great wave. Random SQL update queries started failing at random with the following error: ActiveRecord::StatementInvalid: Mysql2::Error: Lock wait timeout exceeded; try restarting transaction: UPDATE users SET …

https://blog.kalina.tech/2019/07/debugging-mysql-lock-errors-in-ruby-on-rails.html

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