Latest Articles
October 1, 2025 Backend Development
Stop Silent Failures: A Type-Safe, Fail-Fast Environment Validator for Elysia.js
Key Points/Decision Snapshot- Problem: Bun auto-loads `.env` but doesn’t validate or type values—leading to delayed, production-only crashes.- Principle: Fail-fast validation halts startup on misconfi
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September 4, 2025 Architecture & Cost Optimization
Digital Signage Storage Architecture: Cloudflare R2 vs AWS S3 vs EC2
Key Points/Decision Snapshot- Use object storage + CDN by default. R2 minimizes surprise bills via zero egress; S3 integrates tightly with CloudFront and AWS tooling.- Cost drivers: storage $/GB-month
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September 2, 2025 Realtime & Systems Architecture
Digital Signage Comms 2025: Firebase vs Socket.IO vs HTTP Polling
Decision Snapshot- Socket.IO for low-latency push, full control, and best $/GB (cloud egress rates). Requires ops (sticky sessions, Redis, autoscale).- Firebase RTDB for managed fan-out and rapid deli
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