Hello all, I'm trying to get started on writing a chat server that can handle many concurrent connections(~150,000+); it will be a component of a webapp underway. I've been reading all sorts of stories, reviews, and such --many on here as well. Specifically, I really enjoyed abstractbill's story about working at justin.tv, and writing their backend in twisted. If this approach is scalable and probably quicker to develop, considering its in python, I don't see why more companies don't go this route? (btw, I'm not implying disbelief, I'm really just wondering why)I have narrowed my options down to using python and twisted, or using a java backend with some jython and using netty for the comet tasks. I also read that netty on jboss takes quite a toll on memory; but that using a java backend should be faster than python. I'd really appreciate if you guys can help me out a bit; enough to finally make a decision. (fyi, issues about which language/technology is more knowledgeable are NOT a factor) Which is the better approach for a comet powered chat component?