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Fresh notes on building modern products and resilient engineering systems.
For developers shipping modern web products
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Danh Thanh Dev.
Software engineer sharing practical insights on designing, developing, launching, and growing modern web products.
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Content systems 01
API infrastructure 02
Web performance 03
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Set Up 9router API Proxy on VPS with PM2 and Cloudflared
Detailed guide to setting up a 9router API proxy on a VPS using PM2 and Cloudflared Tunnel. Manage multiple AI API keys (OpenAI, Anthropic, Google), rotate providers, hide credentials, and control costs.
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03 notes02 tutorials Getting Started with Astro 5 Learn how to build fast, content-focused websites with Astro 5 and its islands architecture. → 03 guides TailwindCSS 4 Migration Guide Everything you need to know about migrating to TailwindCSS 4, including breaking changes and new features. → 04 guides Building a SaaS with Astro and StudioCMS A comprehensive guide to building a SaaS application using Astro and StudioCMS for content management. →
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01 tutorials Set Up 9router API Proxy on VPS with PM2 and Cloudflared Detailed guide to setting up a 9router API proxy on a VPS using PM2 and Cloudflared Tunnel. Manage multiple AI API keys (OpenAI, Anthropic, Google), rotate providers, hide credentials, and control costs. → 02 tutorials Getting Started with Astro 5 Learn how to build fast, content-focused websites with Astro 5 and its islands architecture. → 03 guides TailwindCSS 4 Migration Guide Everything you need to know about migrating to TailwindCSS 4, including breaking changes and new features. → 04 guides Building a SaaS with Astro and StudioCMS A comprehensive guide to building a SaaS application using Astro and StudioCMS for content management. → 05 tutorials Mastering TypeScript Generics Deep dive into TypeScript generics and learn how to write reusable, type-safe code. →