RxJava

Raised as a usability problem by 4 people on Hacker News over 8 years (2017–2024), in 4 threads.

People raised many different problems with RxJava, but no single problem has yet been raised by 3 people in 3 different months and threads.

Unreviewed issues were grouped by machine: Claude Haiku labelled each comment as a usability complaint, named what it's about and summed up the problem in a line, and a small model grouped similar problems. Nobody has checked them by hand. Expect mistakes.

The newest 4 complaints

Using the API correctly is nearly impossible, so code is buggy2024-02-27
Non-blocking reactive APIs are very hard to use and debug2023-03-16
Hard to tell whether streams are hot or cold, which thread they run on, and how to cancel them2018-08-27
Error handling is awkward; errors kill streams and re-establishing them is hard2017-11-25