Nginx Accelerator

Drop-in page caching using nginx, lua, and memcached.

Features

• Listens to Cache-Control max-age header
• The memcached key is the URI (easy to expire on demand)
• Really, really fast

Requirements

You'll need an nginx build with the following modules:

• LuaJIT
• MemcNginxModule
• LuaRestyMemcachedLibrary

Configure nginx

Install luarock

git clone git://github.com/winton/nginx-accelerator.git
cd nginx-accelerator
luarocks make

nginx.conf

Drop the following line in any location directive:

access_by_lua "require('accelerator').access()";

For example:

http {
  server {
    listen 8080;

    location = / {
      access_by_lua "require('accelerator').access()";
    }
  }
}

The TTL is based on Cache-Control: max-age, but defaults to 10 seconds.

To configure your memcached connection information:

access_by_lua "require('accelerator').access({ host='127.0.0.1', port=11211 })";

Ruby client

Install gem

gem install accelerator

Example

cache = Accelerator.new("localhost:11211")
cache.get("/test")
cache.set("/test", "body")
cache.delete("/test")   
cache.expire("/test", 10)

Running specs

Install Lua

brew install lua
brew install luarocks

Install PCRE

brew update
brew install pcre

Install OpenResty (nginx)

curl -O http://agentzh.org/misc/nginx/ngx_openresty-1.2.4.9.tar.gz
tar xzvf ngx_openresty-1.2.4.9.tar.gz
cd ngx_openresty-1.2.4.9/

Get your PCRE version:

brew info pcre

Replace VERSION below with the PCRE version:

./configure --with-luajit --with-cc-opt="-I/usr/local/Cellar/pcre/VERSION/include" --with-ld-opt="-L/usr/local/Cellar/pcre/VERSION/lib"
make
make install

Start nginx

cd nginx-accelerator
./nginx/start

Run specs

bundle install
spec spec