Source: http://lifehacker.com/speed-up-firefox-by-enabling-its-new-http-cache-1570488335
If Firefox has been feeling sluggish for you lately, you might be able to cut down on some of those UI hangs with an about:config tweak.
The Mozilla team is working on a number of performance tweaks for upcoming versions of Firefox, one of which is the use of a new HTTP cache that should fix some UI hang issues. It isn't enabled by default yet, but will be soon—and you can enable it right now with an about:config tweak. To do so:
- Enter
about:config
into Firefox's address bar and press Enter. - Search for the
browser.cache.use_new_backend
flag and double-click on it. - Change its value from 0 to
1
to enable the new cache. (You can flip it back at any time by changing it back to0
). - Close about:config and continue browsing—no need to restart or anything.
I enabled it and while it hasn't been a silver bullet, it seems to have helped decrease the number of times the browser screeches to a halt. Check out the link below for more info, and while you're digging around in about:config, check out some of our other favorite tweaks
Mozilla Firefox New HTTP Cache Is Live! | Mayhemer's Blog via @tarasglek
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