How We Achieve Sub-50ms Response Times Globally

When we started building DeployFast, we had one obsession: speed. Not just fast builds, but fast everything. Every page load, every API call, every deployment should feel instant.

Today, 50,000+ developers deploy with DeployFast, and our median global response time is 47ms. Here's how we built the infrastructure to make that possible.

The Edge-First Architecture

Traditional deployment platforms work like this: your code lives in one region (usually us-east-1), and users around the world make requests to that single location. If you're in Singapore and the server is in Virginia, you're looking at 200ms+ of network latency before any code even runs.

DeployFast takes a fundamentally different approach. When you deploy, we don't just put your code in one place—we distribute it to 275+ edge locations worldwide.

// Traditional: Single region
const response = await fetch('https://api.example.com/data');
// Latency: 200-400ms from Asia

// DeployFast: Edge-first
const response = await fetch('https://app.deployfast.dev/data');
// Latency: 20-50ms from anywhere

Smart Caching at Every Layer

Speed isn't just about where your code runs—it's about minimizing unnecessary work. We implement caching at every layer of the stack:

• Static Assets: Immutable caching with content-addressed URLs
• API Responses: Stale-while-revalidate patterns for dynamic data
• Build Artifacts: Layer-level caching for incremental builds
• DNS: Anycast routing to the nearest edge

"The fastest code is the code that never runs. The second fastest is the code that runs close to the user."

The Build Pipeline

Our build system is where a lot of the magic happens. When you push code, we don't start from scratch every time. We analyze your dependency tree and only rebuild what's changed.

$ deploy --verbose
→ Analyzing changes...
→ 3 files changed, 847 cached
→ Building changed modules: 2.1s
→ Optimizing assets: 0.8s
→ Deploying to 275 edges: 3.4s
→ Total: 6.3s

Framework Detection

DeployFast automatically detects your framework and applies optimized build configurations. Next.js? We enable ISR. Astro? We pre-render routes. SvelteKit? We configure proper adapter settings.

Real-World Performance

Here's what this architecture means in practice. These are real P95 latency numbers from our monitoring:

• San Francisco → Edge: 12ms
• London → Edge: 18ms
• Singapore → Edge: 23ms
• São Paulo → Edge: 31ms
• Sydney → Edge: 28ms

What's Next

We're not done yet. Our team is currently working on:

• V8 Isolates for even faster cold starts
• Predictive pre-warming based on traffic patterns
• Regional database replicas with automatic failover

Speed is a feature. It's not something you bolt on at the end—it has to be designed into the system from day one. That's the philosophy we've built DeployFast on, and we're just getting started.

Want to see it in action? Start deploying for free and experience sub-50ms response times yourself.