Edge tier
Physically close to users. 100s of PoPs. First cache hit. TTL usually 1 hour to 1 day.
Advertisement
Edge tier
Physically close to users. 100s of PoPs. First cache hit. TTL usually 1 hour to 1 day.
Advertisement
Regional tier
10-20 large caches. Aggregate misses from edges. Hit rate higher than any single edge.