https://hftengineer.com/posts/Recent content in Posts on HFT Engineer's RoadmapHugoen-usSat, 20 Jun 2026 00:00:00 +0000https://hftengineer.com/posts/spsc-ring-buffer/Sat, 20 Jun 2026 00:00:00 +0000https://hftengineer.com/posts/spsc-ring-buffer/A single-producer/single-consumer ring buffer is the fastest way to move data between two threads — and the canonical low-latency interview question. We build one in C++, prove it correct with acquire/release ordering, and then watch a textbook false-sharing ‘fix’ make it slower before the real optimisation takes it 14× faster. All numbers measured and ThreadSanitizer-clean.https://hftengineer.com/posts/mechanical-sympathy/Sun, 03 May 2026 00:00:00 +0000https://hftengineer.com/posts/mechanical-sympathy/Three hardware ideas that decide whether your low-latency code is fast or pretending to be: how the cache hierarchy works, why branch prediction can change runtime by 5×, and how false sharing makes lock-free code slower than mutexes.