The Blog: June 2009

Those of you in the Rails community who use NGINX may have come across this before: Ezra Zygmuntowicz’s NGINX config. It bears some similarity to the ones we use at Agora. Specifically, the section relating to serving page-cached files. The relevant lines (pulled from one of our configs) looks like this:

if (-f $request_filename.html) { rewrite (.*) $1.html break; }
if (-f $request_filename/index.html) { rewrite (.*) $1/index.html break; }
if (!-f $request_filename) { proxy_pass http://some-proxy; }

This generally works well, for simple cases. Unfortunately, we’ve run into some more complex ones where it didn’t cut it. I’ll outline two of those cases below and show what we did to fix it.

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The problem: I define hooks for callbacks in my javascript libraries. The functions for these hooks could be defined anywhere and tend to overwrite each other. When you want to write a callback you have to understand what the entire system is doing.

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