Hacker News Reader

We've also had memory leaks - not sure of the exact issue, but it's related to large scale reconnects. https://github.com/zeromq/libzmq/issues/1256

Yep. Every few days the process was oom killed because of that. When we moved away from it and used OS sockets directly, everything worked fine.

ZeroMQ is a C++ library written by a guy who hates C++:

He later rewrote the whole thing in C:

Not necessarily. It's not a good idea to assume that the library you are using is perfect and free of bugs.

OSes and popular OSS libraries have ridiculous bugs sometimes.