No memory caching. Every "Back" click reloads from disk/web. Set your own limit (e.g., 131072 for 128MB).
More cache isn't always better. If you set the capacity too high, you might starve other applications of memory, leading to system-wide lag. Start with a moderate increase, restart your browser, and see how it feels.
Moving cache activity from the disk to the RAM can slightly reduce "wear and tear" on your Solid State Drive. How to Access and Adjust the Setting Browser.cache.memory.capacity
Double-click the capacity setting to change the value. Note: The value is measured in Kilobytes (KB) . Recommended Values
Understanding Browser.cache.memory.capacity: Optimize Firefox Ram Usage No memory caching
: By default, Firefox automatically manages this value based on your total system RAM. For instance, on a 4GB system, it may default to roughly 30 MB. Key Values & Customisation Recommendation -1 (Default)
The browser.cache.memory.capacity integer specifically controls the maximum size of this fast-access RAM cache in . Why Adjust It? More cache isn't always better
Conversion formula: MB × 1024 = KB. For 250 MB, enter 256000 .
Note: If the preference does not exist, right-click any blank area, select , and name it exactly as written above . Enter a Value :
In the world of web performance, speed is the ultimate currency. Every millisecond shaved off a page load improves user experience and productivity. One of the most powerful—yet often misunderstood—tools for fine-tuning this speed in Firefox is the browser.cache.memory.capacity preference.
