Alex Chen
Full-stack developer and open source contributor. Alex specializes in performance optimization and modern web architecture patterns.
Articles by Alex Chen
Performance: CDN Selection and Configuration Guide
Choose and configure the right CDN for your SaaS, comparing Cloudflare, Fastly, AWS CloudFront, and Bunny.net for edge caching and global delivery.
Cloudflare Workers: JavaScript Runtime vs V8 Isolates
Understand how Cloudflare Workers' JavaScript runtime works, including V8 isolates, API compatibility, Web APIs, and runtime limitations.
Performance: Critical CSS and Inlining Strategies
Eliminate render-blocking CSS with critical CSS extraction, inlining, and loadCSS patterns to achieve instant first paint for your SaaS application.
File Upload Architecture: R2, Multipart, and Streaming in TanStack Start
A comprehensive guide to file upload architecture in TanStack Start on Cloudflare Workers — covering multipart uploads, R2 object storage, streaming, chunked uploads for large files, and image processing pipelines.
Cloudflare D1 Full-Text Search: Real Benchmark on 100K Rows
Real performance benchmark. We tested FTS5 on 100K rows in Cloudflare D1. Query times, storage overhead, and when to use D1 vs Turso for search.
Cloudflare Workers: Queues for Async Processing
Build reliable async processing pipelines with Cloudflare Workers Queues, covering producer-consumer patterns, batch processing, and error handling.
Real User Monitoring: We Caught 80% of Issues Before Users Complained
Real RUM implementation. We reduced support tickets by 80% using Cloudflare RUM + custom metrics. Step-by-step setup with actionable alerts.
Getting Started with TanStack Router v1
A complete guide to building type-safe, file-based routing in your React application using TanStack Router v1 — the new stable release.
Cloudflare D1 Performance 2026: Real Benchmarks, 12ms Reads, Production Limits
Cloudflare D1 production performance: real benchmarks showing 12ms read latency, write performance, and production limitations. Includes optimization strategies.
Cloudflare Workers: Durable Objects for Real-Time State
Build real-time, stateful applications with Cloudflare Durable Objects, covering coordination, WebSocket management, and transactional state.
Core Web Vitals Deep Dive: LCP, CLS, and INP Optimization for SaaS
A comprehensive guide to optimizing Core Web Vitals for SaaS applications — covering LCP, CLS, INP optimization strategies, Web Vitals measurement on the edge, and automated performance budgets.
Performance Budgeting: Setting Targets and Automating Enforcement
A practical guide to implementing performance budgets for SaaS applications — covering metric selection, budget thresholds, CI/CD enforcement, dashboard monitoring, and team workflows.
Streaming SSR Deep Dive: How It Works and Implementation Guide
A deep technical dive into Streaming SSR — how it works under the hood, why it dramatically improves perceived performance, and how to implement it with TanStack Start.
Lighthouse 95+ Optimization Playbook: SaaS Performance Guide
A step-by-step guide to achieving 95+ Lighthouse scores for your SaaS application, covering Core Web Vitals, SSR optimization, bundle splitting, and image optimization strategies.
Cloudflare Workers: Cron Triggers and Scheduled Tasks
Automate background jobs in Cloudflare Workers with Cron Triggers, covering scheduled tasks, Schedules API, and integration with D1 and R2.
Cloudflare Workers: Introduction and Getting Started
Get started with Cloudflare Workers for serverless computing, covering the Workers runtime, Wrangler CLI, project setup, and deployment workflow.
Edge Computing: Cloudflare Workers vs AWS Lambda@Edge
Compare Cloudflare Workers and AWS Lambda@Edge across cold starts, pricing, runtime limits, and developer experience to choose the right edge platform for your SaaS.
Performance: Reducing Time to First Byte (TTFB)
Reduce Time to First Byte (TTFB) for your SaaS application with edge computing, database optimization, caching, and server-side rendering improvements.
Cloudflare Workers Secrets: Secure Storage That Passed Our Security Audit
Production secrets management for Cloudflare Workers. We passed SOC2 audit using Wrangler secrets, Vault integration, and rotation policies.
How to Choose Your SaaS Tech Stack in 2026
A comprehensive comparison of modern SaaS tech stacks including TanStack Start, Next.js, Remix, and SvelteKit — with decision frameworks and performance benchmarks.