How Slack Lost Over 800,000 Messages

While that really, really sucks for the team (suggestion: take your latest count and just keep a manual tally of the new messages, maybe?) the final point they make is something that needs to be stressed over and over again. Don't trust third-parties to care about your data. They may have backup strategies in place or they might not. No one is going to care as much about your data as you do and you should treat every piece of data as if you have the only copy of it.

If it's important to you, then you are ultimately responsible for it.

Hypothesis of "least surprise:" Sane defaults implies warning users about impending destructive actions ie deletion), give them a chance (ie grace period, lotsa warnings) to change settings and/or pay more money to keep large datasets. Implicit, destructive system behavior is flawed by non-design.

> no messages found from @slackbot retention.

Wouldn't that message have been purged after 7 days, along with the rest of them?

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