Using FlatBuffers to reduce memory usage in adblock-rust

Originally published at https://shivankaul.com/blog/adblock-memory-reduction . We spent a good chunk of 2025 working on memory savings for adblock-rust . This was important and long-overdue work, since while Brave shines in other departments (speed, CPU usage, battery consumption), we’re worse than Chrome for memory because we ship 100,000 adblock filters by default (several times an hour!) that…