By default the wp-github-gist WordPress Plugin uses my own gist-it server which is hosted on a free Google App engine account. If you expect significant amount of traffic to your blog, then do consider deploying your own gist-it server.
Following are the set of instructions that you have to follow to deploy your own gist-it server.
Getting the source code
The source code for the gist-it server is available in my github account. The current stable code is in the Plugin branch.
You can either download the zip file or use git. If you decide to use git, you have to execute the following commands.
Registering a new Google App engine application
The next step is to create a new app in Google App Engine.
Change the app id in source code
Open the app.yaml file and specify your new application id next to the
Deploy your app
Change the gist-it server
After you have deployed your own gist-it server, go to the Plugin’s setting page and change the gist-it server url to your own gist-it server