Memory Leaks in Python and How to Overcome Them
Python is known for being simple, readable, and developer-friendly. One of its biggest advantages is automatic memory management, which means develope…
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The Deep Mechanics of Online Bulk Deletion in PostgreSQL
MVCC, WAL, vacuum, and replication slots under sustained delete load - and how to delete billions of rows without your database noticing Most "how to …
UUID vs ULID vs NanoID: Which Identifier Should You Use in 2026?
A few years ago, choosing an ID format was easy. Most of us generated a UUID, stored it in the database, and moved on. Today things are different. Mod…
Every elevator has a load plate. Tests are supposed to kill fear, not feed it.
Every elevator has a small metal plate near the doors: 8 persons — 630 kg . It doesn't mean the car snaps at the ninth person. It means an engineer lo…
Starving the Garbage Collector: A Pragmatic Guide to Zero-Allocation C#
Over the last few weeks, I’ve open-sourced a suite of high-performance, zero-dependency C# engines. This includes a native DataFrame library ( Glacier…
Magento 2 EAV Performance Deep Dive: Optimizing the Entity-Attribute-Value Model
The Entity-Attribute-Value (EAV) model is both Magento's greatest strength and its most persistent performance bottleneck. It gives you unlimited flex…
Smart Query-Aware Cache Invalidation: Solving Mongoose Performance at Scale
The Mongoose Caching Problem (And How We Solved It) From 300 RPS to 700+ RPS: A 2.2x Performance Breakthrough When you're building a Node.js applicati…
Engineering Resilience: Two Lessons from Building Under Pressure
A reflection on performance optimization at scale and building reliability mechanisms; two tasks that defined my internship. Every engineering interns…
Image Optimization for Modern Web Applications: Formats, CDNs, Automation
Images account for 50-70% of a typical web page's weight. Optimizing them properly — choosing the right format, generating responsive sizes, automatin…
Why We Rebuilt Our Magento Checkout with React: Performance Results
Magento's default Luma checkout loads a heavy Knockout.js stack, dozens of RequireJS modules, and payment iframes that fight for the main thread. For …
HTML-First Websites Are Quietly Winning Again in 2026
TL;DR: HTML-first means shipping real, server-rendered content before any JavaScript runs, then adding scripts only where they earn their place. In 20…
Token Cost Optimization: How to Cut LLM Inference Spend Without Cutting Quality
There is a version of token cost optimization that I do not recommend: cutting token counts by reducing the quality of your system prompt, your retrie…
Streaming 25 Million Excel Cells Through 7 MB of Memory
Streaming 25 Million Excel Cells Through 7 MB of Memory TL;DR: I built an export pipeline that streams 15M+ records as formatted Excel files inside ZI…
Next.js + Supabase Performance Optimization: From Slow to Lightning Fast
Next.js + Supabase Performance Optimization: From Slow to Lightning Fast Last month, I optimized a Next.js + Supabase application that was frustrating…
Mobile Game Power Optimization: Why 30 FPS vs 60 FPS Can Double Energy Usage (Real Data Breakdown)
Introduction Real-world mobile game power consumption varies significantly across rendering complexity, frame rate, and device workload distribution. …
How I Built an AI-Powered Adult (Porn) Content Scanner for Windows (And the Engineering Challenges I Didn't Expect)
Building an AI-Powered Content Scanner for Windows: Performance, Multithreading and GPU Acceleration in .NET Building software always looks straightfo…
Running a High-Performance AI Gateway on Kubernetes
Bifrost, the open-source AI gateway, handles thousands of concurrent LLM requests on Kubernetes with near-zero overhead, autoscaling, and centralized …
JavaScript Performance: Making Your Apps Fast (2026)
JavaScript Performance: Making Your Apps Fast (2026) Performance isn't about premature optimization — it's about understanding what makes JavaScript s…
Optimizing images stored on S3 with ShortPixel: a Laravel walkthrough
If your Laravel app lets users upload images and sends them straight to S3, there is a good chance you are storing files much larger than they need to…
Building Zyke: A High-Performance Community Platform with HTMX, Redis, and CKEditor
When I set out to build Zyke: zyke.social , my goal was simple. I wanted a community platform that was incredibly fast, deeply optimized for search en…
What Is the Difference Between Functional, Performance, and Security API Testing
Three distinct questions, three distinct disciplines and confusing them is how bugs, outages, and breaches get through. Most teams start with one type…
Building a Sovereign Home Server: Lessons Learned Running Nextcloud, Euro-Office, and Frigate on a Raspberry Pi 5
A single-board computer like the Raspberry Pi 5 (8GB) can be surprisingly capable when properly optimized. Running a complete NVR with AI object detec…
How a pure-Python jq ended up 40x faster than the C bindings
I spent yesterday building purejq , a pure-Python implementation of jq. I expected it to be the slow-but-portable option. Then I benchmarked it agains…
Laravel `Bus::bulk()`: Faster Dispatch, Harder Queue Tradeoffs
Bus::bulk() is not a fancy alias for dispatch() in a loop, and it is definitely not a lighter Bus::batch() . In Laravel 13, it is a lower-level dispat…
How Databases Impact System Scalability and Speed in Software Engineering
Databases are core to most software systems, and their design directly influences both scalability and performance. Here’s what every engineer should …
Rails Performance Optimization: Fixing N+1 Queries with includes, preload, and eager_load
Originally published on Hashnode: https://railswithyashika.hashnode.dev/rails-performance-n-plus-one-queries When working with associations in Rails, …
How I made cssnano ~30% faster
Introduction In 2025 I started contributing to cssnano , the CSS minifier that runs at the end of a lot of build pipelines. If you use PostCSS, there'…
Debugging and Eliminating Invisible Memory Leaks in Node.js Event Loops
When building microservices or background worker processes that are meant to run continuously for months at a time, memory management becomes critical…
I built a native C# Grep engine that's holding it's own with ripgrep (with zero allocations)
Let’s be honest: the golden rule of modern software engineering is "never rewrite grep." Tools like ripgrep are written in native Rust, compiled strai…
Stop Guessing, Start Profiling: A Dev's Guide to Go Mechanics
The Problem: The Mysterious 2-Second Freeze Imagine your Go microservice is a chef in a busy kitchen. It processes orders (JSON payloads) super fast. …