José David Baena – Software Engineer https://josedavidbaena.com Personal website and blog where I document thoughts, ideas, and interests in software engineering, web performance, and open source technologies. en-us josedab@gmail.com (José David Baena) josedab@gmail.com (José David Baena) Fri, 10 Apr 2026 00:00:00 GMT https://josedavidbaena.com/blog/zero-copy/05-zero-copy-storage-direct-io-spdk Zero-Copy Storage Is More Than O_DIRECT https://josedavidbaena.com/blog/zero-copy/05-zero-copy-storage-direct-io-spdk Separate copy avoidance, cache bypass, host-DRAM touch, and CPU work across mmap, O_DIRECT, io_uring, ublk, SPDK, and NVMe paths. Fri, 10 Apr 2026 00:00:00 GMT josedab@gmail.com (José David Baena) zero-copystoragelinuxio-uringspdk