I'm running compojure on Heroku. They have a limit of a 100 threads per process. So when I go over that limit, I get: java.lang.OutOfMemoryError: unable to create new native thread. Compojure is using the jetty ring adapter. Is there away of configuring the the server to only accept a hundred threads to the servlet at a time?
The solution comes from Chris Perkins over at the compojure google group.
(run-jetty app {:configurator #(.setThreadPool % (QueuedThreadPool. 5))})
This initializes a QueuedThreadPool (with a concurrent limit of five threads) to the jetty instance, before it starts.
来源：https://stackoverflow.com/questions/7878725/limiting-the-number-of-threads-compojure-spawns