how many rules need to be checked without a match before a matching one is found
Nevertheless, the argument of the popular ad-blockers being very efficient made by our friends at Cliqz also pointed out that ours could be made faster still.īrave’s network request ad-blocker supports Adblock Plus (“ABP”) filter syntax and we have previously looked at how the cost of ad-blocking adds up with the popular ad-blocking lists growing, often without the rules actually being used. The recent Chromium’s Manifest v3 controversy around the overheads of the various extensions using the WebRequest API to inspect and potentially block undesired requests did not affect Brave as requests are processed natively, deep within the browser’s network stack. Starting today, this new implementation is available in our Dev channel and Nightly channel. Even though Brave’s ad-blocker was already implemented in heavily optimized C++ handling requests with sub-millisecond overhead, we found that we can further optimise it for a 69x average improvement. Since loading an average website involves 75 requests that need to be checked against tens of thousands of rules, it must also be efficient. Ben Livshits, Brave’s Chief Scientist.īrave Shields, which protect users’ privacy from trackers and ads, are one of the cornerstone components of the browser involved in handling every single web request made for loading a website. Andrius Aucinas, performance researcher at Brave, and Dr.
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