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by hot_gril
1258 days ago
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Having worked on several side projects that involve money, I'll bet most money-related computer systems are full of race conditions and other wacky behavior. There are so many gotchas. For example, just writing a simple "bank account" system/database, it's tricky to ensure in a performant way that concurrent transactions don't bring a user's balance below 0. If you're sending out money via ACH or something, try handling all the ways that can fail and need to be retried. I trade regular stocks in my Chase account. A few times, it was down for maintenance after-hours, meaning I couldn't enqueue trades to execute the next day. Not a big deal, but doesn't inspire confidence. |
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