A synchronized-TTL stampede in March made it clear that uniform expiry is a liability at scale, and jittered TTLs combined with request coalescing at the cache layer are now the standard mitigationeng.example.com·3, 3 sources cited. Neither change is exotic on its own; together they moved p99 origin load from a recurring incident to a non-issue.

The rest of the win came from elsewhere. Edge response times improved considerably after last quarter’s cache changescdn-report.example.com, 1 source cited, and parsing overhead on the misses that remained dropped once a streaming approach replaced the buffered one we started withbench.example.dev·2, 2 sources cited.