Over at I-Dacs Labs, we run high-throughput telemetry pipelines on edge devices (Raspberry Pis, Advantech gateways, and embedded x86/ARM boxes). We've been using LF Edge eKuiper for local stream processing (SQL filtering, sliding windows, and MQTT/Kafka sinks), but kept hitting the classic edge computing wall:
JVM engines (Apache Flink): Incredible throughput, but require >1 GB RAM and take 20+ seconds to boot. Unusable on small industrial hardware.
Go engines (Upstream eKuiper, Benthos, Telegraf): Much lighter, but continuous Stop-The-World GC sweeps introduced tail latency jitter. Worse, under burst sensor loads (10k–100k events/sec), Go channel buffer saturation led to silent packet loss.
We decided to rewrite the entire engine in pure Rust: rekuiper (v0.421-beta, dual licensed under MIT / Apache-2.0).
### What We Built
