Newbie question: '3xx result' means?

Web Performance Discuss Test Results
1

Hello everyone,

Is there a glossary about what the ‘3xx result’ row identifier in the ‘waterfall view’ exactly means?

I can see:

  • rows highlighted with yellow are at least duplicated in this view.
  • the time for those rows is appended with (301)

Is it saying the .css, .gif, and .jpg are being called more than once, or?

Thanks for your help.

2

Greetings irobert,

This should help you out:

The 3xx results on this testing site usually mean found or not modified; there is already a cached version on your computer.

The 4xx results usually mean not found. These usually indicate errors.

This is at least what I interpreted them as. Anybody feel free to correct me if I am mistaken.

Sincerely,
Travis Walters

3

Yep - 4xx+ are errors, 3xx are highlighted yellow as “warnings” even though they are successful requests because they are “wasted” time (either in a redirect to the real location or a “not modified” for something that should have had a longer expires time on it).