Deep dives, investigations, and things I figured out the hard way.
How eBPF changed production debugging — attaching probes to kernel functions, tracing syscalls, measuring latency histograms, and XDP packet processing, all without touching application code or rebooting.
The first 512 bytes that run when your machine powers on. A walkthrough of x86 real mode, the BIOS interrupt interface, segment:offset addressing, and what it takes to load a second stage.
Inside ThreadSafeCLogger: how to build a high-performance logging library that doesn't serialize your threads, using per-thread SPSC ring buffers and careful memory ordering.
A deep dive into implementing a functional TCP/IP stack entirely in software — covering Ethernet framing, ARP, IP routing, TCP state machines, and the painful lessons learned along the way.