Vercel· 19 SepHow we made global routing faster with Bloom filters
Bloom filter cuts routing latency and memory usage
Capability change
Vercel optimized its global routing service by replacing a slow JSON path-lookup file with a Bloom filter, reducing memory usage by 15%, improving TTFB from the 75th percentile and above by 10%, and cutting path lookup latency to nearly zero for websites with many static paths.
