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On developer dogma #3 : Never ship on Fridays
(www.octomind.dev)
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It's not about how hard the problem is to reverse, it's about respecting the team enough not to call them on Saturday.
Again: if the changes are small enough and you have automated checks in place, they should not require manual intervention.
Plus, what happens if a deploy on Thursday has a bug which only is manifested on a Saturday?
Good question.
Since we're doing a deep dive, I'll share some additonal context. I'm the manager of the developers. On my team, that means the call comes to me first.
I have had Thursday deploys that resulted in bugs discovered on Saturday. Here's how the conversation on Saturday went:
"Thanks for letting me know. So we didn't notice this on Friday?"
"No, it's subtle." Or "We noticed, but didn't get around to letting you know until now."
"Okay. I'll let the team know to plan to rollback at 0900 on Monday, then we will start fixing any damage that happened on Friday, and the weekend."
Can i work with you please? That sounds heavenly