Or, more specifically, why sysadmins like programs written in interpretedlanguages. I say this because we do; it is one reason for the enduringpopularity of writing things in the Bourne shell, because in a sense theBourne shell is the platonic ideal of an interpreted language on Unixsystems.

Here's why I at least really like such programs:

• you don't need a different copy for every different sort of systemthat you have, because
• you don't have to compile your programs.
• thus there is

One of the things that you can do to make a complex webapplication perform better is to put a reverse proxy in front of it. On thesurface this seems counterintuitive, since you're adding an extra layerof software that does nothing but pass the traffic back and forth.

What's going on is simple: buffering. Namely, it's better to bufferreplies in the reverse proxy than to 'buffer' them in your applicationitself.

Your web application uses a certain amount of memory in the