I was working on a graphing platform for a bank, back in the days of Adobe Flash. We were replacing server-rendered static charts with charts rendered in Flex,

I was working on a graphing platform for a bank, back in the days of Adobe Flash. We were replacing server-rendered static charts with charts rendered in Flex, but as we neared completion and entered testing the client noticed an issue: they had a batch job that generated PDF reports containing charts, but the PDF still used the old server-generated charts! Given that the new charts were rendered on the client, this seemed to be an impossible ask -- certainly the client didn't expect us to be able to solve it, once they realised their mistake. I bodged together the standalone Flash player with a headless XServer and some extra logic in Flex, so it would repeatedly hit an endpoint, render a chart with the data returned, then post it back up to another endpoint. It took a couple of rounds of back-and-forth with their IT folk, but it worked! And we heard a couple of years later that it was still running happily in production. For several years I left "Adobe Flex" off my resume, I hope it's dead enough now that I can safely admit to having known how to develop for it. I'm still quite proud of having invented the monstrosity that was "Server-side Flash".