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Shafqat Awan
Shafqat Awan

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How I Built a Real API Gateway Using Cloudflare Workers (And Why It Matters)

Modern software is no longer built as a single monolith. Today’s systems are made of microservices, mobile apps, SaaS platforms, and third-party APIs—all communicating across the internet.
But there is one component that silently controls everything:

👉 The API Gateway

In my latest tutorial, I walk through building a Full-Stack Serverless Mobile Enrichment Gateway using Cloudflare Workers—from zero to a production-grade architecture.

This is not a demo.
This is how real systems are built.

🚧 The Problem With Direct Microservice Access

In many teams, mobile apps and frontend systems directly call backend services. That leads to:

• Security risks
• Duplicate logic across clients
• No rate limits
• No request validation
• No centralized control
• Hard-to-scale architecture

Once you add multiple services or external providers, things become unmanageable.

That’s where an API Gateway becomes mandatory.

🧩 What This Tutorial Builds

In this video, we create three real systems:

1️⃣ Mobile Enrichment Client
A web application that represents mobile apps, dashboards, or backend consumers.

2️⃣ Mobile Enrichment Gateway (API Gateway)
The single entry point that:

Authenticates requests

Enforces rate limits

Validates data

Applies idempotency

Calls upstream services

Normalizes responses

3️⃣ Mock Enrichment Provider
A cloud-hosted microservice that simulates a real telecom or third-party enrichment API.

Everything runs on Cloudflare Workers, meaning:
• No servers
• Global edge deployment
• Ultra-low latency
• Built-in scalability

🧠 What You’ll Learn

This tutorial covers real backend engineering, including:

• API Gateway Architecture
• Serverless & Edge Computing
• Secure API Design
• Rate Limiting
• Idempotency vs Caching
• Input Validation
• Upstream Service Abstraction
• Cloudflare Worker Deployment
• Microservices Integration

If you work in fintech, SaaS, telecom, or enterprise backend systems, these are core skills.

💡 Why This Architecture Matters

This is the same pattern used by:
• Payment platforms
• Mobile carriers
• API marketplaces
• SaaS backends
• AI pipelines

By placing an API Gateway between clients and services, you get:
• Security
• Scalability
• Observability
• Maintainability
• Freedom to change providers

This is how systems survive at scale.

🎥 Watch the Full Tutorial

👉 YouTube:
https://www.youtube.com/@Coding_Mavrick
https://youtu.be/D4Lt18qYkjc

(Search: “How to Build an API Gateway (Cloud Native) on CloudFlare | Mobile Enrichment API Gateway"
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