Browser.cache.memory.capacity -

The preference browser.cache.memory.enable must be set to true for the capacity setting to take effect. If this preference doesn t exist, create it as a **Boolean** and set it to true`.

This preference dictates exactly how much of your computer’s RAM (Random Access Memory) Firefox is allowed to use for storing web content temporarily. Unlike disk-based caches that save assets to your hard drive or SSD, the memory cache is the elite, lightning-fast tier of storage. When configured correctly, it can make page reloads feel instantaneous. When left at its default—or configured incorrectly—it can lead to sluggish performance, excessive memory usage, or wasted resources. Browser.cache.memory.capacity

: Allows multi-tab power users to instantly flip between back-and-forward navigation histories without experiencing a single millisecond of asset reloading lag. The preference browser

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In the search box, type: browser.cache.memory.capacity . Unlike disk-based caches that save assets to your