Exploring low-level programming, systems design, and performance optimizationhttps://0xkiire.comen-ushttps://0xkiire.com/Intro/https://0xkiire.com/Intro/Mon, 31 Aug 2026 00:00:00 GMTExplanation for why I'm sharing my personal experiences on my systems programming journey.https://0xkiire.com/background/https://0xkiire.com/background/Mon, 31 Aug 2026 00:00:00 GMTMy Personal story about how I got into systems and low-level programming.https://0xkiire.com/local-caching-policies-and-mechanisms/https://0xkiire.com/local-caching-policies-and-mechanisms/Tue, 25 Aug 2026 00:00:00 GMTThis guide describes the algorithms behind local (in-process / single-node) caching systems in enough detail that each can be implemented from the description alone.https://0xkiire.com/package-manager-guide/https://0xkiire.com/package-manager-guide/Sat, 20 Jun 2026 00:00:00 GMTA package manager is one of the most architecturally rich pieces of tooling you can build. It touches dependency resolution (a provably NP-complete problem in the general case), distributed systems (registry protocol, caching), cryptography (integrity verification, signing), filesystem management (content-addressable stores, atomic installs), and UX design (CLI, error messaging). This guide covers every layer, with concrete algorithms and data structures, not hand-waves.https://0xkiire.com/zypher_complete_docs/https://0xkiire.com/zypher_complete_docs/Mon, 15 Jun 2026 00:00:00 GMTA complete reference for zypher-cli and zypher frameworkhttps://0xkiire.com/zig-release-distribution/https://0xkiire.com/zig-release-distribution/Wed, 10 Jun 2026 00:00:00 GMTA complete reference for tagging, GitHub releases, and distributing Zig libraries and CLI tools across npm, Homebrew, AUR, apt, and Windows package managers.https://0xkiire.com/wasm-with-zig/https://0xkiire.com/wasm-with-zig/Tue, 09 Jun 2026 00:00:00 GMTWebAssembly is often paired with Rust (via wasm-pack), Emscripten'd C++, or Go. All three bring substantial baggage: wasm-pack generates a JS glue file and pulls in a Rust standard library; Emscripten ships a complete POSIX emulation layer including `malloc`, `printf`, and a virtual filesystem; Go embeds a full garbage collector and goroutine scheduler into every binary. The resulting `.wasm` files for "Hello World" range from 50 KB to 2 MB before compression.https://0xkiire.com/terminal-text-tools-guide/https://0xkiire.com/terminal-text-tools-guide/Thu, 28 May 2026 00:00:00 GMTA deep dive into the Unix/Linux text toolchain — grep, sed, awk, cat, echo, cut, tr, sort,uniq, wc, tee, less, head, tail, printf, xargs, find, diff, patch, strings, hexdump, and more.https://0xkiire.com/text_editor_data_structures(1)/https://0xkiire.com/text_editor_data_structures(1)/Thu, 28 May 2026 00:00:00 GMTA deep dive into how the editors you use every day actually store and manipulate text — and why it's one of the most underrated problems in systems programming.https://0xkiire.com/gui_guide/https://0xkiire.com/gui_guide/Mon, 11 May 2026 00:00:00 GMTThe Complete Guide to creating A UI Library Using Only C and SDL2https://0xkiire.com/mn-concurrency-model/https://0xkiire.com/mn-concurrency-model/Sat, 09 May 2026 00:00:00 GMT"Concurrency is not parallelism. Parallelism is about doing many things at once. Concurrency is about dealing with many things at once. The M:N model is the bridge between the two." — adapted from Rob Pikehttps://0xkiire.com/io-multiplexing-guide/https://0xkiire.com/io-multiplexing-guide/Tue, 07 Apr 2026 00:00:00 GMTHow do servers handle thousands of connections? Learn readiness-based I/O with select/poll/epoll, common edge cases, and build a tiny event loop in C, Zig, and Rust.https://0xkiire.com/emacs-full-guide/https://0xkiire.com/emacs-full-guide/Mon, 06 Apr 2026 00:00:00 GMTA comprehensive guide to mastering Emacs, covering everything from basic concepts to advanced customization and workflow optimization.https://0xkiire.com/vulkan_complete_guide/https://0xkiire.com/vulkan_complete_guide/Sun, 05 Apr 2026 00:00:00 GMTA Comprehensive Guide from First Principles to a Complete 3D Rendererhttps://0xkiire.com/build-web-framework-from-scratch/https://0xkiire.com/build-web-framework-from-scratch/Sat, 04 Apr 2026 00:00:00 GMTLanguage-agnostic & pattern-driven. Every step describes what to build, why it is designed that way, and which Gang of Four (GoF) design pattern governs it. Pseudocode is intentionally simplified — the focus is on architecture decisions, data structures, and the relationships between components. Real implementation can be done in any language capable of systems or application programming (Python, Go, Rust, Java, TypeScript, etc.). The framework we are building is comparable in scope to Django, Rails, or Laravel, a full-stack, batteries-included web framework with an ORM, templating engine, form validation, authentication, caching, migrations, a CLI, and an admin interface.https://0xkiire.com/build-systems-guide/https://0xkiire.com/build-systems-guide/Wed, 11 Mar 2026 00:00:00 GMTbuild systems guide. Why they matter, why should you even care, significatincy and much morehttps://0xkiire.com/build-text-editor-from-scratch/https://0xkiire.com/build-text-editor-from-scratch/Wed, 11 Mar 2026 00:00:00 GMTLanguage-agnostic & pattern-driven. Every step describes what to build, why it is designed that way, and which Gang of Four (GoF) design pattern governs it. Pseudocode is intentionally simplified — the focus is on architecture decisions, data structures, and the relationships between components. Real implementation uses the same logical structure in any language (Rust, C++, TypeScript, Python, Go, etc.).https://0xkiire.com/build-mini-os-from-scratch/https://0xkiire.com/build-mini-os-from-scratch/Mon, 02 Mar 2026 00:00:00 GMTArchitecture-focused. Every step describes *what* to implement and why, with concrete data-format references, assembly/pseudocode examples, and memory-layout diagrams so you can build it in x86 Assembly + C (the most common pairing), or adapt to ARM/RISC-V. Tools used; NASM, GCC (cross-compiler), QEMU, GNU ld.https://0xkiire.com/clean-architecture-golang-guide/https://0xkiire.com/clean-architecture-golang-guide/Mon, 02 Mar 2026 00:00:00 GMTArchitecture-focused. Every step describes what is involved and the role it plays in clean architecturehttps://0xkiire.com/tilemap_assets_guide/https://0xkiire.com/tilemap_assets_guide/Wed, 25 Feb 2026 00:00:00 GMTBuilding Professional 2D Games with SDL in C. A Comprehensive Resource Management and Rendering System.https://0xkiire.com/c_macros_guide/https://0xkiire.com/c_macros_guide/Tue, 24 Feb 2026 00:00:00 GMTMastering the C Preprocessor for Portable and Kernel-Level Code. A Comprehensive Resource for Cross-Platform Development and Linux Kernel Programming.https://0xkiire.com/ecs_immediate_mode_guide/https://0xkiire.com/ecs_immediate_mode_guide/Tue, 24 Feb 2026 00:00:00 GMTA Data-Oriented Approach to Game Development with SDL in C. Building High-Performance Games with Entity Component Systems.https://0xkiire.com/append-only-log-storage/https://0xkiire.com/append-only-log-storage/Mon, 23 Feb 2026 00:00:00 GMTAppend-only logs are simple, fast, and crash-friendly. Learn record formats, checksums, compaction, and how WAL-like designs work, with C, Zig, and Rust examples.https://0xkiire.com/reactor-vs-proactor-event-loops/https://0xkiire.com/reactor-vs-proactor-event-loops/Sun, 22 Feb 2026 00:00:00 GMTReactor (readiness) and proactor (completion) are two mental models for scalable I/O. Learn how epoll and io_uring fit, and implement tiny examples in C, Zig, and Rust.https://0xkiire.com/memory-debugging-tools/https://0xkiire.com/memory-debugging-tools/Sat, 21 Feb 2026 00:00:00 GMTA practical guide to debugging memory issues: use-after-free, buffer overflows, leaks, and data races. Learn what tools catch, what they miss, and how to reproduce issues with C, Zig, and Rust.https://0xkiire.com/concurrent-file-processing-pipelines/https://0xkiire.com/concurrent-file-processing-pipelines/Fri, 20 Feb 2026 00:00:00 GMTBuild a practical pipeline to process many files concurrently without overwhelming the system. Learn batching, bounded queues, and work partitioning with C, Zig, and Rust examples.https://0xkiire.com/build-git-from-scratch/https://0xkiire.com/build-git-from-scratch/Thu, 19 Feb 2026 00:00:00 GMTLanguage-agnostic. Every step describes what to implement and why, with pseudocode and concrete data-format references so you can implement it in any language (Python, Rust, Go, C, TypeScript, etc.).https://0xkiire.com/page-cache-and-writeback/https://0xkiire.com/page-cache-and-writeback/Thu, 19 Feb 2026 00:00:00 GMTUnderstand Linux page cache, buffered I/O, dirty pages, writeback, and how fsync interacts with durability. Includes experiments and code in C, Zig, and Rust.https://0xkiire.com/atomic-file-save-patterns/https://0xkiire.com/atomic-file-save-patterns/Wed, 18 Feb 2026 00:00:00 GMTPractical patterns for safely updating configuration and state files. Covers temp+rename, write-ahead logs, checksums, and length-prefix formats with C, Zig, and Rust examples.https://0xkiire.com/crash-consistency-fsync-rename/https://0xkiire.com/crash-consistency-fsync-rename/Tue, 17 Feb 2026 00:00:00 GMTPower loss and crashes turn "it worked" into "it corrupted". Learn what fsync guarantees, why rename is special, and how to implement crash-consistent updates in C, Zig, and Rust.https://0xkiire.com/futexes-and-parking/https://0xkiire.com/futexes-and-parking/Mon, 16 Feb 2026 00:00:00 GMTFutexes are the kernel primitive behind fast mutexes and condition variables on Linux. Learn the "fast path" vs "slow path", and build a tiny mutex using C, Zig, and Rust.https://0xkiire.com/mmap-advanced-madvise-mincore/https://0xkiire.com/mmap-advanced-madvise-mincore/Sun, 15 Feb 2026 00:00:00 GMTGo beyond basic mmap. Learn how to hint access patterns with madvise, check residency with mincore, and design page-fault friendly readers in C, Zig, and Rust.https://0xkiire.com/graphics_programming_guide/https://0xkiire.com/graphics_programming_guide/Sat, 14 Feb 2026 00:00:00 GMTThe Complete Guide to Graphics and Games Programming with SDL in C. A Comprehensive Journey from Pixels to Professional Game Development.https://0xkiire.com/message-passing-channels/https://0xkiire.com/message-passing-channels/Sat, 14 Feb 2026 00:00:00 GMTLearn message-passing concurrency: bounded vs unbounded channels, backpressure, fan-in/fan-out, and shutdown semantics. Includes C, Zig, and Rust examples and practical patterns.https://0xkiire.com/thread-pools-and-backpressure/https://0xkiire.com/thread-pools-and-backpressure/Fri, 13 Feb 2026 00:00:00 GMTThread pools are easy to create and hard to run safely. Learn bounded queues, backpressure, shutdown, and avoiding unbounded memory growth, with C, Zig, and Rust examples.https://0xkiire.com/file-locking-flock-fcntl/https://0xkiire.com/file-locking-flock-fcntl/Thu, 12 Feb 2026 00:00:00 GMTFile locking is deceptively subtle. Learn advisory locks, flock vs fcntl record locks, lease-like patterns, and how to implement a safe "single instance" lockfile in C, Zig, and Rust.https://0xkiire.com/file-descriptors-deep-dive/https://0xkiire.com/file-descriptors-deep-dive/Wed, 11 Feb 2026 00:00:00 GMTFile descriptors are the universal I/O handle on Unix. Learn how fd state works (offsets, flags), how dup/dup2 behave, why CLOEXEC matters, and how to build robust patterns in C, Zig, and Rust.https://0xkiire.com/async-io-with-io-uring-overview/https://0xkiire.com/async-io-with-io-uring-overview/Tue, 10 Feb 2026 00:00:00 GMTio_uring moves beyond readiness: submit I/O and receive completions. Learn the core concepts, when it helps, and minimal examples in C, Zig, and Rust.https://0xkiire.com/io-multiplexing-select-poll-epoll/https://0xkiire.com/io-multiplexing-select-poll-epoll/Mon, 09 Feb 2026 00:00:00 GMTHow do servers handle thousands of connections? Learn readiness-based I/O with select/poll/epoll, common edge cases, and build a tiny event loop in C, Zig, and Rust.https://0xkiire.com/filesystems-inodes-and-directories/https://0xkiire.com/filesystems-inodes-and-directories/Sun, 08 Feb 2026 00:00:00 GMTUnderstand the core filesystem abstractions: inodes, dentries, hard links, symlinks, and why path lookup can be expensive. Includes practical code in C, Zig, and Rust.https://0xkiire.com/mmap-vs-read-write/https://0xkiire.com/mmap-vs-read-write/Sat, 07 Feb 2026 00:00:00 GMTWhen should you use mmap, and when are classic read/write loops better? Learn page cache behavior, page faults, random access, and safe patterns in C, Zig, and Rust.https://0xkiire.com/lock-free-spsc-ring-buffer/https://0xkiire.com/lock-free-spsc-ring-buffer/Fri, 06 Feb 2026 00:00:00 GMTBuild a correct single-producer single-consumer ring buffer using atomics, and understand why SPSC is simpler than MPMC. Includes C, Zig, and Rust implementations.https://0xkiire.com/threads-and-synchronization-primitives/https://0xkiire.com/threads-and-synchronization-primitives/Thu, 05 Feb 2026 00:00:00 GMTA detailed, practical guide to concurrency primitives: what mutexes guarantee, how condition variables work, and how to structure correct waiting loops — with C, Zig, and Rust examples.https://0xkiire.com/atomics-and-memory-ordering/https://0xkiire.com/atomics-and-memory-ordering/Wed, 04 Feb 2026 00:00:00 GMTA practical guide to atomic operations and memory ordering (relaxed/acquire/release/seq_cst). Learn what the CPU and compiler are allowed to do, with C, Zig, and Rust examples.https://0xkiire.com/file-io-syscalls-and-buffers/https://0xkiire.com/file-io-syscalls-and-buffers/Tue, 03 Feb 2026 00:00:00 GMTLearn the practical mechanics of file I/O: file descriptors, syscalls, buffering, partial reads/writes, and robust patterns with C, Zig, and Rust.https://0xkiire.com/cache-locality-and-data-layout/https://0xkiire.com/cache-locality-and-data-layout/Mon, 02 Feb 2026 00:00:00 GMTCPU caches reward predictable access. Learn spatial/temporal locality, AoS vs SoA, prefetching, and how to measure improvements in C, Zig, and Rust.https://0xkiire.com/virtual-memory-foundations/https://0xkiire.com/virtual-memory-foundations/Sun, 01 Feb 2026 00:00:00 GMTA detailed, practical walkthrough of virtual memory: pages, page tables, permissions, and what happens during a page fault — with C, Zig, and Rust examples.https://0xkiire.com/memory-allocators/https://0xkiire.com/memory-allocators/Sat, 31 Jan 2026 00:00:00 GMTLearn how memory allocation works by implementing your own malloc() and free() functions in C. A deep dive into heap management, fragmentation, and optimization techniques.https://0xkiire.com/welcome/https://0xkiire.com/welcome/Sat, 31 Jan 2026 00:00:00 GMTWelcome to 0xKiire, a blog dedicated to low-level programming, systems design, and performance optimization. Join me as we explore the fascinating world beneath the abstractions.