Browser.cache.memory.capacity -

Now go forth, open about:config , and tweak with confidence.

Enjoy the power while it lasts, but do not build a critical workflow that depends on manually setting this value. Conclusion: The Golden Rule of browser.cache.memory.capacity After thousands of words of technical detail, the most important advice is simple: Browser.cache.memory.capacity

In recent Firefox versions (100+), the memory cache is now partially shared with the , blurring the lines between this preference and internal memory management. There is a non-zero chance that Mozilla will lock this value permanently to -1 in future releases, removing manual control. Now go forth, open about:config , and tweak with confidence