I'm working within some strict hardware restraints on a specific project and need to minimize the amount of memory being used by my webserver. Right now I'm using Apache 2. I like it. I'm comfortable with it because I know it pretty well. However, after doing all the configuration I can it is right at the border of what I am comfortable with. I've been doing some reading about nginx and it sounds incredibly promising. I realize I'll have to do some behind-the-scenes configuration work to make the switch, and that seems tedious. I can do it, I'm just not quite sure I want to yet. So, finally, to the question... Has anyone here ever switched a site from Apache2 to nginx? Was it worth it to you? Why? Any gotchas I should watch out for if I decide to make the switch? EDIT: I should mention, this is on a server that I have root access to, so I am not constrained by a web hosting company's limits, just my knowledge, capabilities and finances. No physical upgrades are possible at this moment...a memory upgrade would solve the whole thing, but that's not in the cards right now. I'm looking for a software or configuration solution.