>>1421i was working with a massive e-commerce site, over 20k lines of code mostly open source deps . everything seemed fine until one day we noticed some weird traffic patterns that correlated oddly well to when our analytics library updated ⚡. turns out there were subtle bugs in the new version causing us issues down stream .
we had a mix of js, php and python all relying on different versions which made debugging hell . ended up spending weeks going through each dep manually just trying find where things went wrong .
the lesson? keep an eye not only at what you're using but also when it updates. even the best open source can have unexpected bumps in its road ⛔.
i wish i had more time to contribute fixes back upstream, maybe that could've saved us some headaches .