🚀 Caching Proxy Server (Go + Fiber)

A simple CLI-based caching proxy server built with Fiber in Go.
It forwards requests to an origin server and caches the responses for a configurable time (default: 60s).
If the same request is made again within the cache TTL, the proxy serves the cached response instead of hitting the origin server again.

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✨ Features

• ✅ CLI tool with --port and --origin flags
• ✅ Caches responses in memory with a TTL
• ✅ Adds custom header X-Cache: HIT/MISS for debugging
• ✅ Works with any endpoint (catch-all routing)
• ✅ Reduces load on origin servers and speeds up repeated requests

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🛠 Installation

1. Clone the repository:

   git clone https://github.com/<your-username>/caching-proxy.git
   cd caching-proxy

2. go mod tidy
3. go build caching-proxy

##🚀 Usage

Run the proxy with a port and origin server:

./caching-proxy --port 3000 --origin http://dummyjson.com

Now, you can make requests through the proxy:

curl -i http://localhost:3000/products/1

##Example response headers:

First request (cache MISS):

HTTP/1.1 200 OK Content-Type: application/json X-Cache: MISS

Second request (cache HIT):

HTTP/1.1 200 OK Content-Type: application/json X-Cache: HIT

##📂 Project Structure

. ├── main.go # Main entry point (CLI + Fiber app) ├── go.mod # Go module file ├── go.sum └── README.md # Project documentation

##📌 Why a Caching Proxy?

Improves performance by serving repeated requests faster

Reduces server load on the origin server

Increases reliability if the origin server is slow or temporarily unavailable

Mimics how real-world CDNs (e.g., Cloudflare, Akamai) work

The Project URL: https://roadmap.sh/projects/caching-server