Browser.cache.memory.capacity [upd] -

Mastering browser.cache.memory.capacity: The Ultimate Guide to Firefox’s In-Memory Cache

Introduction: The Hidden Lever of Browser Speed

In the quest for a faster web browsing experience, most users chase after the usual suspects: a faster internet connection, ad-blockers, or the latest hardware. However, lurking beneath the surface of Mozilla Firefox is a powerful, often-overlooked configuration setting: browser.cache.memory.capacity .

The SSD Saver: Some users worry about the constant "wear and tear" of a browser writing small temporary files to an SSD. By disabling the Disk Cache (browser.cache.disk.enable = false) and increasing the Memory Capacity, they force the browser to live entirely in the "volatile" RAM, which clears every time the computer restarts—keeping the SSD pristine and the browsing lightning-fast. Key Settings to Know Preference Recommended Action -1 Let the browser decide based on your system RAM. 0 Browser.cache.memory.capacity

If it doesn’t exist, you can create it as a new integer preference. Mastering browser

Any reason not to make more RAM available for browser cache? By disabling the Disk Cache ( browser

By default, this preference is typically set to -1. This "automatic" setting allows the browser to dynamically determine the optimal cache size based on the total physical RAM available on the user's system.