CAKE
Linux qdisc: Common Applications Kept Enhanced. All-in-one QoS solution: shaping + fq_codel + DiffServ prioritization + ACK thinning. Default in OpenWrt routers, growing adoption in consumer networks.
Sets bandwidth limit just below uplink rate → minimizes tail latency throughout queue handling. ACK thinning: drop redundant TCP ACKs in upstream direction → less overhead traffic. Per-host fairness: one device can't monopolize. Config: tc qdisc replace dev eth0 root cake bandwidth 100mbit. Measurable win: Bufferbloat tests (waveform.com, dslreports) drop from 200+ ms to <10 ms tail latency with CAKE configured. Standard recommendation for home-router tuning.