Ilya Sukhar on Twitter: "HBO email bug reminds me of one of mine: I wrote the billing code at Ooyala. Forgot to gate it by environment. End of the month came and all customers were charged N+1 times where N was the number of staging servers."

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HBO email bug reminds me of one of mine: I wrote the billing code at Ooyala. Forgot to gate it by environment. End of the month came and all customers were charged N+1 times where N was the number of staging servers.

Oh boy I’ve got some horror stories. Refactored our weekly bonus code, stored percent as “10” instead of “0.10” and accidentally paid out about $100k extra first thing Monday morning. That was a scramble but we got it all back.

I wrote the billing code for the Facebook ads system. My test plan didn’t handle the scenario of paying for more than one invoice at a time correctly. So if you had two invoices, the code would run the payment twice, double charging the client. *shaking head*

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