Simple Post-Mortem

Simple bills themselves as a “worry-free alternative to traditional personal banking.” I would recommend you go directly to their site to read more, but apparently their development team wants to force you to use JavaScript to read anything.

Sorry, but Simple requires Javascript for all kinds of things. Please either try a different browser or enable Javascript. The rest of your web activity may also get a bit snappier as a result.

Snappier? What if I don’t put performance first? And is it just me or are they making things more complicated than necessary? I can’t even get to their contact page unless I bother to read the scripts they want me to run.

After experiencing service failures last week they have posted this explanation, which highlights performance concerns and operations monitoring:

Our response to these failures was delayed because our automated monitoring did not catch the abnormally low transaction ingestion rate, the incorrect records for some new customers or the increased error rates on simple.com/activity. Though we already collect hundreds of thousands of data points about our service, we had not identified these important metrics or ensured that changes in their behavior would alert our engineering team. We’re adding more metrics and live tests to our services to help catch these and similar issues more quickly in the future.

We’ve also updated our services to explicitly check for the problematic data we received, and are examining all of our services to ensure that they properly validate all data.

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