Topic

Heavy-hitter algorithms

Streaming methods that identify the most frequent keys in a data stream using memory far smaller than the key space, including Space-saving and HeavyKeeper.

Current clusters

build1 publisher

incident.io backs a fail-open rate limiter with a top-k counter in each pod's memory

The on-call platform keeps its rate-limiting counters in managed Valkey under a 99.99 percent SLA, and an intern project adds a local buffer for the busiest gates so that a store outage would not switch limiting off entirely.

Publishers:incident.io

Reality

Evidence42
Adoption25
Hype gap+15
Incentives78
Confidence55