Pushed a bad config update at 2 AM and lost 6 hours of transaction data

I was sitting in my home office in Denver after a late deploy and accidentally pushed a schema change that nuked our orders table. No backups were running on that shard because of a cron job I forgot to restart. How do you all handle deployment safeguards without slowing down releases?

3 comments

3 Comments

james_bell1mo ago

Ngl that's a rough one. Feature flags can help you toggle bad changes off without a full rollback. Also test your backup cron manually every week, don't just assume it runs.

sean_green441mo ago

I saw a post last week from some DevOps guy saying feature flags are the best thing since sliced bread for exactly this kind of mess. He was ranting about how they save your bacon when a deploy goes sideways and you can just flip a switch instead of panic-rolling back everything. And yeah, manually testing backups is something I learned the hard way too. A buddy of mine thought his cron was running fine for months, then when he needed it, the drive was full and nothing backed up. It's one of those chores that feels pointless until it's not.

paulw531mo agoMost Upvoted

That feature flag thing is one of those ideas that sounds simple but can save you so much pain. I've seen teams where a half-baked feature slipped into production and instead of doing a full rollback that could break other stuff, they just flipped the flag and laughed about it over Slack. The backup thing hits close to home too. A client once lost a whole week of work because their "automated" backup was actually filling up a temp directory and silently failing for three months. Now I literally have a calendar reminder to go check the backup files myself every Friday afternoon. It's annoying but way less annoying than explaining to a client why their project files vanished.