HYHabib Yusufinmanlikehb.hashnode.dev·Jun 15 · 14 min readBuilding a Buffer Pool: Why Your Database Shouldn't Talk to Disk DirectlyHozonDB is a relational database engine I'm building from scratch in Rust, mostly as a way to actually understand how databases work instead of just using them. Previous posts covered slotted page sto00
RPRavidu Priyankarainravindu-priyankara.hashnode.dev·Jun 8 · 18 min readThe Case of the Disappearing eBPF Instruction: Inside Map FD Relocation and BPF_LD_IMM64While reading the disassembly of a compiled eBPF program I was working on, I noticed something strange — the 6th instruction was missing. Reading through the full disassembly again, I realized it wasn00
RTRashindu Tharindainrash522.hashnode.dev·May 19 · 6 min readYour code never actually touches the hardwareEvery line of Python, Go, or C you write runs inside a box. A carefully constructed, permission-enforced box. The hardware underneath, the disk, the network card, the RAM, none of it is yours to acces00
GKGyeongtae Kimindasae-scenic-route.hashnode.dev·Mar 17 · 62 min readZero-Cost defer in C: A Compiler Optimization OdysseyHow a Duff's device, two compilers, and one hidden LLVM flag turned a macro hack into a zero-cost abstraction. Author: Gyeongtae Kim (김경태) · codingpelican@gmail.com · github.com/coding-pelican Publ00
KGKirill Galkininkgalkin.hashnode.dev·Feb 5 · 4 min readMeet RustHello everyone! This is the first article in my series “Rust for Beginners”. In this series, we will go through installing Rust on your computer, running your first program, conditions, loops, and man00
PSpankaj singhin0xpankaj.hashnode.dev·Dec 26, 2025 · 6 min readDemystifying Rust's Async: A Comprehensive Guide to Futures, Executors, Reactors, and BeyondRust's asynchronous programming model is one of its most powerful features, enabling efficient, non-blocking I/O and concurrent operations without the overhead of threads. However, it can be confusing for newcomers—especially concepts like futures, a...00
TATawaliou ALAOintawaliou.com·Dec 21, 2025 · 2 min readOS Design and Implementation: (Week 2) - SyscallIt took me almost three weeks (nights and week-end) to read Chapter 2 of the xv6 book: Operating System Organization, study the xv6 code (process and system calls), and finish the assignments on system calls. This chapter covers the organization of t...00
DSDmytro Svynarenkoindsvynarenko.hashnode.dev·Nov 10, 2025 · 8 min readDesigning Blockchain #3: Cryptography and WalletsIntro In the previous article, we explored how blockchain manages accounts and state transitions through transactions. However, we left a critical security gap: anyone could create a transaction claiming to be from any account. This article addresses...01U
TATawaliou ALAOintawaliou.com·Nov 3, 2025 · 5 min readSystem Programming: OS Design and ImplementationStart the MIT 6.1810 Fall2025 Course So… here’s an update on my learning path. 2023 – 2024: Building a Modern Computer from First Principles (aka Nand2Tetris). I studied the fundamentals of computer architecture; from logic gates and the CPU to the o...00
TATawaliou ALAOintawaliou.com·Oct 15, 2025 · 4 min readNetworking Programming: getaddrinfoI was reading about network programming and sockets with Beej’s Guide to Networking Programming, and we ended up writing a simplified version of the nslookup program in C. This program takes a domain name and finds the IPs associated with it by query...00
