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Announcing Silk: a silky smooth fiber runtime for ClickHouse

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Silk fiber runtime for ClickHouse is a novel, technically deep project directly relevant to data engineering.

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Announcing Silk: a silky smooth fiber runtime for ClickHouse
Summary

ClickHouse announced Silk, a stackful-fiber C++ library with a NUMA-aware work-stealing scheduler and io_uring as the I/O ground truth, designed to eliminate heap allocation in the steady-state hot path. Unlike OS threads or C++20 stackless coroutines, Silk yields in tens of nanoseconds and avoids cache aliasing issues that plagued prior fiber implementations like Alibaba's Photon. The first integration target is ClickHouse's distributed cache, targeting I/O-bound workloads where tail latency at the 99th and 99.9th percentile dominates query performance.

Author

James Cunningham

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