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Adding caching note in faq

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svn: r13019
This commit is contained in:
Jay McCarthy 2009-01-06 15:36:57 +00:00
parent cfbd48a4a4
commit 110098bc3b
1 changed files with 12 additions and 0 deletions
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collects/web-server/scribblings/faq.scrbl
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@ -1,8 +1,20 @@
#lang scribble/doc
@(require "web-server.ss")
@(require (for-label web-server/dispatchers/dispatch-servlets))
@title{Troubleshooting and Tips}
@section{Why are my servlets not updating on the server when I change the code on disk?}
By default, the server uses @scheme[make-cached-url->servlet] to load servlets
from the disk. As it loads them, they are cached and the disk is not referred to for future
requests. This ensures that there is a single namespace for each servlet, so that different instances
can share resources, such as database connections, and communicate through the store. The default
configuration of the server (meaning the dispatcher sequence used when you load a configuration file)
provides a special URL to localhost that will reset the cache: @filepath{/conf/refresh-servlets}. If
you want the server to reload your changed servlet code, then GET this URL and the server will reload the
servlet on the next request.
@section{What special considerations are there for security with the Web Server?}
The biggest problem is that a naive usage of continuations will allow continuations to subvert