MemHawk: часть 2. Real-time flamegraph в вашей Grafana
В прошлой статье я рассказал, как можно сделать профилировщик памяти ориентированный на многопоточные приложения, который в 16 раз быстрее heaptrack. …
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Ruby on Rails Has Scalability Issues. Here's How We Solved Them
Every few months someone declares Rails dead. Then Shopify reports another record Black Friday. In 2025, Shopify's Rails monolith handled 489 million …
Async Processing: The Secret to Surviving Spikes
How decoupling work from requests helps systems stay stable under load In the previous part, we saw the limitations of synchronous systems. When every…
Building for the Next Billion Users: Engineering for Emerging Markets
The next wave of internet users will not come from highly connected urban centers. They will come from emerging markets. From small towns, rural areas…
Maximum Concurrency (& Sub-Quadratic Scaling) By TokenGate
What is TokenGate? TokenGate is a beta Python concurrency system built around a token-managed execution model. Instead of managing threads directly, y…
eBPF From Rust: The 34ms Ghost We Couldn’t See
When your profiler swears everything’s fast but your metrics are screaming bloody murder eBPF From Rust: The 34ms Ghost We Couldn’t See When your prof…
How to Benchmark LLM Inference Performance: TTFT, ITL, and Throughput Metrics
When deploying large language models to production, measuring performance accurately is critical. Whether you're using vLLM, SGLang, TensorRT-LLM, or …
Building Performance-First Websites: A Developer's Guide to Measurable Speed
Building Performance-First Websites: A Developer's Guide to Measurable Speed Web performance has evolved from a nice-to-have optimisation into a funda…
How to add backpressure to Socket.IO in production
Real-time applications often start with a simple promise: push data from the server to the client as it happens. You install Socket.IO, set up a names…
Borrowed Strings: API Designs That Cut 94% of Allocations
The 6ms latency improvement from one character change — how &str over String transformed our hot path performance Borrowed Strings: API Designs Th…
Building C24 Club: The Architecture Behind a Rewards-Powered Video Chat Platform!
Random video chat looks simple from the outside! click a button, meet a stranger. But the moment you add a live rewards economy, gender-aware matchmak…
SQL Server Running Slow? Here's What Actually Fixes It.
Every growing business hits this wall at some point. The application that worked perfectly six months ago now takes forever to load. Users start compl…
Cost Optimization Strategies for Databricks Workloads
Introduction Databricks has become a core platform for data engineering, analytics, and machine learning. It brings flexibility and scalability, but i…
Stitch Multiple Videos Together Without Re-encoding Them
Ever recorded several short clips and wished you could just glue them into one file? Maybe a bunch of vacation footage, a series of screen recordings,…
One PR to a parser unlocked prerendering in Brisa
I built a JavaScript framework called Brisa . The kind of framework that needs to parse every single source file your app contains; analyze imports, d…
Privacy-first mind mapping app. Part 2: Rust Backend - Why the Pain Is Worth It
Choosing Rust for a backend can feel irrational at first. If your short‑term goal is raw development speed, Rust does not win. The compiler is unforgi…
Redis-backed permissions for high-volume Laravel apps: v4.0.0-beta.1
I just shipped v4.0.0-beta.1 of laravel-permissions-redis , and I want to share both what's in it and the specific problem it exists to solve. The pro…
Testing on Fast Wi-Fi Is Not a Performance Test
Testing on Fast Wi-Fi Is Not a Performance Test Tags: #react #performance #webdev #javascript Most performance testing happens on a MacBook Pro, over …
Your Slow Website is a Legal Risk: Why Technical Debt is Now a Liability
Hey DEV community! 👋 After auditing dozens of enterprise platforms, I’ve noticed a dangerous trend. We talk a lot about JS bloat ruining Core Web Vita…
Stop Merging Slow Code: Catching Python Performance Regressions Before They Hit Production with Oracletrace
We spend a significant amount of time ensuring our Python code is clean, linted, and logically sound. We write unit tests to verify correctness and in…
2026 Web Development Trends: AI, Performance & WebAssembly Convergence
2026 Web Development Trends: Where AI Meets Performance 2026 marks the year where emerging technologies converge into production-grade tooling. Here's…
CI/CD Build Systems for Cloud-Native Applications
TLDR ; Multi-stage Docker builds with BuildKit caching reduce image sizes by 80% and build times by 60% Remote build caching shares artifacts across d…
Why I built a Zero-Server PDF Editor with React & pdf-lib (and skipped WASM)
The Privacy Bottleneck Merging tax documents or signing contracts often forces a compromise: convenience vs. security. Standard free tools require upl…
The Hidden Costs of AI in Production (And How Developers Can Reduce Them)
AI looks cheap in demos. A few API calls, a working prototype, and suddenly it feels like you have built something powerful with minimal effort. But p…
Indexing Strategies for Faster Database Queries
TL;DR Indexes = direct lookups — milliseconds vs full table scans (seconds). B-tree for most queries — Supports = , < , > , BETWEEN , LIKE 'pref…
Effective Request Cancellation with Axios in JavaScript
Originally published on PEAKIQ Key Points: CancelTokens in Axios: Axios allows us to create CancelTokens using the CancelToken.source() method. These …
Detective mode: Fixing the MongoDB Aggregation pipeline
This article was written by Darshan Jayarama . It was a Friday, and I was quickly wrapping up my week, finishing the tasks that were assigned. Suddenl…
Columnar Databases (ClickHouse/Snowflake)
The Data Titans: Diving Deep into the World of Columnar Databases (ClickHouse & Snowflake) Hey there, fellow data enthusiasts! Ever feel like you'…
How to Optimize Machine Learning Models on AWS
In the high-stakes environment of cloud computing, optimizing machine learning models on AWS is the difference between an expensive experimental proje…
How We Build High-Performance Animated Websites Without Killing Page Speed
Modern web users expect two things at the same time: smooth, delightful animations and instant page loads . The problem? Most teams accidentally sacri…