Akka

Raised as a usability problem by 5 people on Hacker News over 8 years (2014–2021), in 5 threads.

People raised many different problems with Akka, 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 5 complaints

Framework complexity makes simple applications painful for newcomers and senior engineers alike2021-10-19
Untyped messages make it unclear what actors accept, so code becomes unreadable2019-02-20
Can't step through a message flow; each send needs hunting for the receiving actor2018-03-06
Can't navigate to the correct overloaded method; IDE can't resolve it either2017-11-11
Akka was so difficult to use it nearly soured the commenter on Scala2014-01-29