i'm using java fibers (https://github.com/kilim/kilim) for a database

for anyone interested in using fibers inside a java webapp, i just wrote up a quick survey of async java servlet performance: http://blog.nqzero.com/2016/01/asynchronous-java-webserver-h...

(based TechEmpower plaintext benchmark, but limited to java async)

the model is that you use async in the server, and then bridge to a fiber implementation and then complete the async response when the fiber completes. for handling high latency low cpu processing on the server, this technique allows handling a huge number of connections