Speed is a feature: 10 tips for faster browser networking — First published in fullweb.io issue #64
1. Minimize TCP connections
Ensure the web server uses
2. Reduce DNS look-ups
DNS look-ups are the first thing blocking your HTTP requests.
3. Make less HTTP requests
Concatenating your scripts and CSS in a single
styles.css is a good start. You can also inline (small) images.
4. Implement a good caching strategy
That means configuring
5. Gzip all assets
A compression level of 6 is a good compromise between file size and decompression speed.
6. Turn on TCP-Fast-Open
Not a silver bullet but something to try. It makes TCP send data earlier.
7. No redirect, please
Having redirection is essentially the same as doing another request.
8. Be closer to the user: CDN for the win
Put your assets geographically close to the user.
9. Consider HTTP pipelining
This allow several HTTP requests in a single TCP segment. The client and server must support it and worst case scenario need to he handled.
10. Increasing TCP’s Initial Congestion Window
TCP window size is small at first and increase as the network is seen stable. You can have TCP start with a bigger window size.