Building a Perceptual Hash Pipeline for Video Deduplication in Python
A single viral clip never stays a single file. Within hours of a video trending, our crawlers pull the "same" clip back a dozen times: re-encoded at a…
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39,000 Torrents: The Bug My Green Benchmark Never Caught
[Torrent911] Inception.2010.TRUEFRENCH.1080p.BluRay.x264-YIFY That's a real filename. The goal: extract "Inception" and "2010" from it, query the TMDB…
Why Compressing an Image to Exactly 50KB Is Harder Than It Sounds
Ever wondered why one image hits 50KB at 80% quality while another is still 200KB at 20%? The answer isn't your compression library — it's how JPEG co…
Teaching a phone to disbelieve its own GPS
The bug report came in on a Tuesday. One line: "Your app says I hit 400 kmph. I was at a red light." He wasn't lying. Neither was the app. The phone g…
The Union‑Find Fellowship: Finding Your Tribe in Code
The Quest Begins (The "Why") I still remember the first time I stared at a LeetCode problem that asked me to count the number of islands in a grid. My…
Building SaarDB, Part 2: LSM Trees
In Part 1, SaarDB had two pieces: a Write Ahead Log (WAL) for durability, an in-memory map for serving reads and writes. That works as a starting poin…
Semantic Drift in LLMs: How Archetypal Attractors (Like “Goblin”) Emerge and How Structured Reflection Reduces Them
Large language models often develop recurring symbolic patterns — archetypes, metaphors, and memetic shortcuts — that appear across unrelated contexts…
How to Backtest a Trading Strategy with Python and EODHD API
Most backtests lie to you. Not intentionally. But they lie. You design a strategy, run it on historical data, and watch the returns look incredible. T…
Why Hijri Date Conversion Breaks Naive Math Formulas
If you search "convert Gregorian to Hijri" you'll find dozens of one-line formulas floating around StackOverflow, most of them some variant of hijriYe…
Algorithmic Entity Resolution in Music Metadata
In the global streaming economy, Spotify, Apple Music, and other DSPs process billions of plays daily. Behind this massive transaction layer lies a fr…
Implementing Chat End-to-End Encryption (E2EE): A Technical Guide to X3DH and Double Ratchet
Claims of "security" are everywhere, but very few chat APIs actually walk the walk. Most offerings fall apart under a true zero-trust audit because th…
dev.to How Online Casinos Prove Their RNG Is Fair, and Why Most Software Can't
Math.random() returns a number between 0 and 1, and roughly nobody reading this could explain what happens between the call and the return. That is fi…
A Shortest-Path CLI in Rust — Making a Min-Heap from a Max-Heap, Path Reconstruction, and Rejecting Negative Weights
A CLI that finds shortest paths in a weighted graph, in Rust, with Dijkstra's algorithm. Three implementation hinges: (1) Dijkstra needs a min-priorit…
The Monotonic Stack: Like Gandalf's Staff for Array Problems
The Quest Begins (The "Why") Honestly, I still remember the first time I stared at the Daily Temperatures problem on LeetCode and felt like I was tryi…
Surprise Over Age of Fundamental Algorithms: Modern AI Excluded from Standard University Courses
Introduction: The Timeless Nature of Algorithms When you crack open a standard Data Structures and Algorithms textbook, it’s easy to assume the conten…
Sliding Window: The Force Awakens – Detect the Pattern and Never Get Stuck Again
The Quest Begins (The “Why”) I still remember the first time I faced a “minimum size subarray sum” question in an interview. The problem stared back a…
How Constraints Changed the Way I Think About Algorithms
Over the past couple of years, I've spent a lot of time preparing for software engineering interviews. Like many developers, I started my Data Structu…
Deutsch Algorithm Revisited: Quantum vs Classical Implementation in Qiskit
In the previous post on the Deutsch algorithm , we covered the theory. Here we implement both the classical and quantum approaches in Qiskit so the qu…
Segment Trees: The “Divide‑and‑Conquer” Trick That Actually Makes Sense
Segment Trees: The “Divide‑and‑Conquer” Trick That Actually Makes Sense Quick context (why you're writing this) I remember the first time I saw a segm…
The Fastest Set Is Often Not a Set: 4050 Duplicate-Detection Benchmarks
Duplicate detection looks solved: keep a hash set, skip what you have already seen. A benchmark suite of 4050 measurements across 480 workloads says t…
DSA vs. Real-World Coding Interviews — and Where Does AI Leave Us?
For a long time, I have come across the debate on the right way to vet technical candidates: should interviews focus on Data Structures & Algorith…
Markov Chain Coin Sequence: E[HH] vs E[HTH] Explained
In This Article The Question The Intuition Trap Building the State Machine for HH Solving the System: E[HH] = 6 Building the State Machine for HTH Sol…
Top 5 Data Visualizations for Algorithmic Trading (With Python Code)
Top 5 Data Visualizations for Algorithmic Trading (With Python Code) Most algo traders write signals. Almost none visualize them correctly. You can ha…
Vitalii Kiro: The Drone War Is Over. The War of Algorithms Begins
When people say that Ukraine has become a “testing ground” for Western technologies, there is some truth to it. But that truth is incomplete — and eve…
Thoughts on Codingame 2026 Spring challenge
Thoughts on Codingame 2026 Spring challenge (Trolls in woods) I liked the challenge a lot, the most enjoyable experience so far! I even reached legend…
no-cycle finds 0 cycles in next.js (and other lies caches tell you)
We benchmark import-next/no-cycle against eslint-plugin-import/no-cycle and oxlint's native Rust port on next.js (131K stars, 14,556 source files). Th…
I read the X (Twitter) algorithm source for 4 days and built a Claude Code sub-agent that scores drafts before posting
Twitter's recommendation algorithm has been open-source since March 2023. I spent four days reading it. Here's what those four days taught me — and th…
Solving a Logistics Problem Using Genetic Algorithms
A week back, I started exploring Genetic Algorithms — and honestly, the concept blew my mind a little. The idea that you can solve complex optimizatio…
Visualizing 4 Sorting Algorithms with JavaScript Generators — O(n ) vs O(n log n) in Real Time
Sorting visualizers are a genre. This one is different in one way that matters: the algorithm code has zero knowledge of the DOM . Bubble, Insertion, …
How I Solved N-Queens Using Bitmasking (Step-by-Step Guide)
🚀 Solving N-Queens Using Bitmasking (Step-by-Step Guide) 🧠 Problem Overview The N-Queens problem : Place n queens on an n × n chessboard such that no …