The thing that really annoys me about ZeroMQ is that sockets aren't thread-safe. This isn't such a big problem C, but it caused some really weird and difficult to track down problems in a Haskell program I wrote where I used a PAIR socket, but I wrote and read in different threads. I ended up doing some fairly unsightly socket gymnastics to get around this limitation.
Haskell programs are generally thread-safe by construction. It's very easy to overlook thread-safety in foreign libraries, but this isn't just a problem in Haskell, multi-threaded code is the default is a number of realms.
I now try to avoid ZMQ where I can. Modern libraries should be thread-safe.
Haskell programs are generally thread-safe by construction. It's very easy to overlook thread-safety in foreign libraries, but this isn't just a problem in Haskell, multi-threaded code is the default is a number of realms.
I now try to avoid ZMQ where I can. Modern libraries should be thread-safe.