Home/ Questions/Q 889713
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-15T13:36:42+00:00

A theoretical question: We all know about the pro’s of minifying and combining javascript

  • 0

A theoretical question:
We all know about the pro’s of minifying and combining javascript files in order to reduce HTTP requests to speed up a website. But when popular javascript libraries is used (jQuery for instance), it isn’t too stupid to assume that these already have been downloaded to the clients computer from another page.

So what should be preferrered? How does the big guys in the industry handle it?

A) Combine and minify each script into a massive one and serve it from my own CDN.

B) Combine all “self-written” scripts into one file and utilize available CDN’s of libraries where possible.

Thanks!

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    • “Combine and minify each script into a massive one and serve it from my own CDN“

      If you have a CDN, what are we talking about? 🙂 You mean server, right?

    • “How does the big guys in the industry handle it?”

      The big guys always use their own servers.

    • “…it isn’t too stupid to assume that these already have been downloaded to the clients computer from another page.”

      Unfortunately it is. Facts:

      • 40-60% of users have an empty cache experience
      • browsers’ cache limits are small
      • different versions of libraries are in use, cache only happens if they match
      • resource from a new domain creates a DNS lookup, which is slow
      • +you need to manage dependencies
    • 0