How to Set RAM Cache in Firefox

 


Web browsers like Firefox store a number of commonly downloaded files on the computer in what's called a cache. Storing these files saves the browser from having to load them from the Web every time, making pages load faster. On most computers, the cache is located on the hard drive. While retrieving data from the hard drive is faster than pulling it off of the Internet, storing those files in memory instead is even faster. To get this benefit, you can set Firefox to use RAM as a cache instead of using the hard drive.

1

Open Firefox and type "about:config" (without quotes here and in subsequent commands) into the browser's address bar. The address bar is where the Web address or URL of the site you're visiting appears.

2

Type "browser.cache" into the Search field that appears under the address bar. This will make the browser look for characteristics of its cache settings that can be changed.

3

Find the entry entitled "browser.cache.disk.enable" in the main display area of the browser below the Search field and double-click it to change the value to false.

4

Double-click on the "browser.cache.memory.enable" setting to change it to true if it isn't already. The hard disk cache is turned off and the memory cache is turned on.

5

Right-click anywhere in the screen that displays the cache configuration options. Click "New" from the context menu that appears, and then select "Integer" from the secondary context menu.

6

Enter "browser.cache.memory.capacity" in the dialog box that pops up and press the "OK" button to submit it.

7

Enter either "128000" or "-1" in the new dialog box that pops up and press "OK." That sets the size of your memory cache; for example, 128000 will allocate 128MB of your computer's memory to act as a cache for the browser. Entering "-1" lets Firefox choose the size of its cache depending on your computer's installed RAM capacity. You can also enter other cache sizes in kilobytes.

8

Close every Firefox tab and window to shut the browser down completely, and then double-click the browser's icon to restart it.

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