Django Stats Middleware

Django is one of the most popular Python web frameworks today.

When a Django site seems slow, it's nice to put some real number to to that. The Django Debug Toolbar is the go-to middleware solution for diagnosing Django performance among other things, but it is rather large, and slow itself, adding significantly to the load time of your pages. So it's in a bit of catch 22 bind for simple performance overviews.

For that reason I wrote this tiny little lightweight piece of middleware that reports at the bottom of every page a single line reporting some basic timing stats.

• Total Time: The time from the request arriving to the response being delivered.
• Python Time: Time spent running Python code
• DB Time: Time spent waiting on database queries
• Number of Queries: The number of database queries run

Where:

​ Python Time + DB Time = Total Time

Here's an example:

To use it just put it at the top of your Django Middleware stack:

MIDDLEWARE = (
    'django_stats_middleware.StatsMiddleware',
	...

That way Total Time will include the time spent in all other middleware as well as your site code.