django-server-timing

Django middleware that exposed collected metrics into HTTP Server Timing header.

This headers is used by browser to display several metrics into the Timing tab of the Network interface. Right now, this header is not supported properlly by all browser

It doesn't effect unsupported browser.

This middleware will send the entire header value since not all browsers supports sending it via HTTP Trailer.

Install

It works on Python >= 3.10 and Django >= 4.2

Install easily via pip or uv

pip install django-server-timing
# or with uv
uv add django-server-timing

# For SQL timing with django-silk integration
pip install django-server-timing[silk]
# or with uv
uv add django-server-timing[silk]

And configure MIDDLEWARES

MIDDLEWARE += ['server_timing.middleware.ServerTiming']

Usage

import time                                                                        
                                                                                     
from django.http import HttpResponse                                               
                                                                                     
from server_timing.middleware import TimedService, timed, timed_wrapper            
                                                                                     
                                                                                     
@timed_wrapper('index', 'Index View')                                              
def index(request):                                                                
    home_service = TimedService('first', 'First service')                          
    home_service.start()                                                           
                                                                                     
    time.sleep(0.3)                                                                
                                                                                     
    home_service.end()                                                             
                                                                                     
    with timed('second', 'Second service'):                                        
        time.sleep(0.5)                                                            
                                                                                     
    return HttpResponse('This page shows a list of most recent posts.')