Backend
Materialized Views in Postgres: Trading Freshness for Speed
How to use materialized views to speed up expensive aggregations in Postgres without silently serving stale data to your users.
·5 min read
Tags
performance
44 articles
Engineering
Cancellation Patterns in TypeScript: Taming AbortController
Why most async TypeScript code ignores cancellation entirely, and how to build composable, leak-free cancellation with AbortController.
·4 min read
Backend
Request Coalescing: Preventing the Thundering Herd in Node.js
When a cache entry expires under high traffic, dozens of requests race to rebuild it simultaneously — here's how inflight request deduplication collapses that stampede into a single upstream call.
·4 min read
Backend
Full-Text Search in Postgres: Skip Elasticsearch for Most Use Cases
Postgres has a powerful built-in full-text search engine using tsvector, tsquery, and GIN indexes — no Elasticsearch cluster required for most applications.
·4 min read
Backend
Streaming Large Datasets in Node.js: Backpressure and Async Generators
Stop loading entire result sets into memory: how Node.js streams and async generators let you process millions of records without blowing the heap.
·4 min read
Backend
Async Concurrency Control in Node.js: Semaphores, Throttling, and Backpressure
Unbounded Promise.all is a silent OOM killer — here's how to build semaphores, throttled queues, and stream backpressure into your Node.js applications.
·4 min read
Backend
The DataLoader Pattern: Eliminating N+1 Queries Without an ORM
N+1 isn't an ORM problem — learn how to implement the DataLoader batching pattern in TypeScript to collapse redundant data fetches across any data source, including microservices.
·4 min read
Backend
HTTP Caching Demystified: Cache-Control, ETags, and CDN Strategies
A practical guide to HTTP caching headers — what each directive actually does, when to use ETags, and how to stop fighting your CDN.
·4 min read
Backend
Worker Threads in Node.js: Offloading CPU-Bound Work Without Blocking
Learn how to use Node.js worker threads to handle CPU-intensive tasks without blocking the event loop, with thread pooling and type-safe messaging patterns.
·5 min read
Frontend
React Performance Optimization: Patterns That Actually Move the Needle
Practical React performance techniques — memoization, virtualization, code splitting, and profiling — with real before/after benchmarks and the tradeoffs of each approach.
·3 min read
Backend
Database Design Mistakes I See in Every Codebase (and How to Fix Them)
The recurring database design mistakes that cause slow queries, painful migrations, and production incidents — with practical fixes and the reasoning behind each one.
·4 min read
Frontend
Optimistic UI Updates: Building Responsive Interfaces with Rollback
Implement optimistic UI updates that make your application feel instant by showing expected state immediately, then reconciling with server responses and rolling back gracefully when mutations fail.
·4 min read
Frontend
Server Components and Client Components: When to Use Which in Next.js
Master the mental model for choosing between Server Components and Client Components in Next.js, understanding the rendering boundary, serialization constraints, and composition patterns that determine where code runs.
·4 min read
Backend
Database Connection Pooling: Tuning for Performance Under Load
A deep dive into database connection pool configuration, covering pool sizing formulas, connection lifecycle management, health checking strategies, and diagnosing pool exhaustion under production traffic patterns.
·4 min read
Frontend
WebAssembly for Web Developers: Practical Use Cases Beyond the Hype
A grounded look at where WebAssembly actually delivers value in web applications, covering image processing, cryptography, data transformation, and when JavaScript is still the better choice.
·4 min read
Tutorials
Building a Full-Text Search Engine with Elasticsearch and Node.js
A step-by-step tutorial for implementing full-text search with Elasticsearch covering index design, analyzers, fuzzy matching, faceted search, and performance optimization patterns.
·4 min read
Backend
Connection Pooling Strategies for High-Throughput Node.js Applications
A deep dive into database connection pooling for Node.js services, covering pool sizing, health checks, failover patterns, and the common misconfigurations that cause production outages.
·6 min read
Frontend
WebAssembly for JavaScript Developers: Practical Use Cases
Explore practical WebAssembly use cases for JavaScript developers, from image processing and data compression to cryptographic operations, with clear examples showing when Wasm improves performance and when JavaScript is already fast enough.
·5 min read
Frontend
CSS Scroll-Driven Animations: Beyond JavaScript Scroll Handlers
Build performant scroll-linked animations using CSS scroll-driven animations API with practical examples of scroll progress timelines, view timelines, parallax effects, and sticky header transforms that run entirely off the main thread.
·4 min read
Engineering
Load Testing Strategies: Finding Breaking Points Before Users Do
Design and execute effective load tests using k6 with practical patterns for ramping strategies, realistic user simulation, threshold-based pass/fail criteria, and interpreting results to find bottlenecks before production traffic exposes them.
·5 min read
Backend
Connection Pooling Strategies for High-Throughput Applications
Configure and optimize database connection pools for high-throughput Node.js applications with practical examples covering pool sizing, health checks, connection lifecycle management, and common pitfalls that cause pool exhaustion.
·4 min read
Frontend
Responsive Images Done Right: srcset, sizes, and Modern Formats
Master responsive image delivery with practical examples of srcset, sizes, the picture element, and modern formats like AVIF and WebP to dramatically improve page load performance without sacrificing visual quality.
·5 min read
Frontend
Server-Side Rendering Patterns and Performance Trade-offs
Explore SSR architecture patterns including streaming SSR, selective hydration, island architecture, and partial prerendering, with concrete performance measurements and decision frameworks for choosing the right approach.
·4 min read
Backend
Designing Efficient Pagination for Large Datasets
Compare offset, cursor, and keyset pagination strategies with practical implementations showing performance characteristics, trade-offs, and when each approach fits your API design.
·4 min read
Backend
Distributed Caching Patterns: Consistency, Invalidation, and Failure Modes
Master distributed caching patterns including cache-aside, write-through, read-through, and cache invalidation strategies that handle real-world consistency challenges.
·5 min read
Frontend
Web Animation Performance: GPU-Accelerated Techniques That Ship Smooth 60fps
Master GPU-accelerated CSS and JavaScript animation techniques that deliver consistent 60fps performance without triggering layout thrashing or janky frame drops.
·5 min read
Architecture
Edge Computing Architecture Patterns for Web Applications
Explore edge computing patterns that bring computation closer to users, reduce latency, and enable new capabilities for modern web applications and APIs.
·5 min read
DevOps
Kubernetes Resource Limits and Requests Guide
How to set CPU and memory requests and limits in Kubernetes correctly — avoiding OOMKills, CPU throttling, and wasted cluster capacity with practical sizing strategies.
·5 min read
Frontend
Understanding WebAssembly for Web Developers
A practical introduction to WebAssembly for web developers — covering what it is, when to use it over JavaScript, how to compile from Rust and C, and integrating Wasm modules into web applications.
·4 min read
Frontend
Image Optimization for Web Performance
A practical guide to image optimization for the web — covering modern formats, responsive images, lazy loading, CDN delivery, and measuring the real impact on Core Web Vitals.
·4 min read
Engineering
Load Testing Your API: Tools, Patterns, and Pitfalls
A practical guide to load testing APIs — covering tool selection, realistic traffic patterns, performance baselines, bottleneck identification, and common mistakes.
·4 min read
Backend
Redis Data Structures Beyond Key-Value
Explore Redis data structures beyond simple strings — sorted sets for leaderboards, streams for event logs, HyperLogLog for cardinality, and bitmaps for feature flags.
·4 min read
Backend
Database Connection Management in Production
How to configure and monitor database connection pools — covering pool sizing, leak detection, failover handling, and common misconfiguration pitfalls.
·5 min read
Engineering
Debugging Memory Issues in Production Systems
Techniques for diagnosing memory leaks, excessive allocation, and OOM kills in production — covering heap snapshots, profiling tools, and common leak patterns.
·4 min read
Architecture
Understanding Concurrency Models: Threads, Async, and Actors
A comparison of threading, async/await, and actor-based concurrency models — when each fits, their tradeoffs, and how to avoid common pitfalls.
·5 min read
Frontend
Code Splitting Strategies for Faster Web Applications
Practical code splitting techniques using Webpack and dynamic imports to reduce initial bundle size and improve page load performance.
·4 min read
Backend
SQL Query Optimization: From Slow Queries to Fast Results
Practical techniques for identifying and fixing slow SQL queries using EXPLAIN plans, indexing strategies, and query restructuring patterns.
·4 min read
Frontend
Performance Budgets: Setting and Enforcing Web Performance Standards
How to define, measure, and enforce performance budgets that prevent your web application from silently degrading over time.
·3 min read
DevOps
Serverless Cold Starts: Causes, Costs, and Mitigation
Cold starts are the hidden tax of serverless — understand what causes them, how much they cost in latency, and practical strategies to keep functions warm.
·3 min read
Engineering
Memory Leaks in Node.js: Detection and Prevention
Closures, event listeners, and uncleared timers — the most common memory leak patterns in Node.js and how to find them before they crash production.
·3 min read
Backend
Connection Pooling: Why Every Backend Needs It
Opening a new database connection per request is a silent performance killer — connection pools solve this with a managed set of reusable connections.
·3 min read
Backend
Database Indexing: A Deep Dive
Indexes can make or break your application's performance — here's how they work under the hood and when to use each type.
·3 min read
Backend
Caching Strategies for Web Applications
From HTTP headers to Redis patterns, a practical guide to caching layers that reduce latency and database load without serving stale data.
·3 min read
Engineering
Understanding the JavaScript Event Loop
The event loop is the engine behind every async operation in JavaScript — here's how it actually works, beyond the hand-wavy explanations.
·3 min read