A Rust SPSC Queue That "Beats Every C++ Implementation" — Let's Check

A recent LinkedIn post recently claimed a Rust SPSC queue that "beats every C++ implementation I could find." Not by a little — by 2-8x on burst workloads. Bold claim. I love to roast bold claims though.

I took a deep look at the code and the benchmarks, then ran the queue through a proper two-thread benchmark on isolated cores alongside real C++ contenders - our TOP HFT UNIVERSITY ring buffers! What a carnage! Spoiler: it finished 2.4x behind the best C++ implementation, not ahead.

Here is why the original numbers were wrong, and what the real ones look like.

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