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byroot
on March 13, 2017
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Facebook’s code quality problem (2015)
They graph the number of incidents. Even if a bad release impact only 0.3% of the user base, it's still an incident.
They have to investigate it, revert or fix the bad code and start the deployment process again.
rumcajz
on March 13, 2017
[–]
Ack. Also, the system introduces a new problem: If you are deploying on weekend, most devs are not around to help solving the problem. Thus, the outages would be longer.
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They have to investigate it, revert or fix the bad code and start the deployment process again.