# Nginx Cache Proxy

An nginx proxy server that caches requests only when explicitly requested via the `X-Cache: 1` header.

## Configuration

The nginx configuration implements an inverted caching logic:
- **Default behavior**: Requests are NOT cached
- **Cached behavior**: Only requests with `X-Cache: 1` header are cached

## Usage

```bash
# Normal request - NOT cached (default)
curl http://localhost:3000/?url=https://api.example.com/data

# Cached request - add the header
curl -H "X-Cache: 1" http://localhost:3000/?url=https://api.example.com/data
```

## Features

- Cache path: `/var/cache/nginx`
- Cache zone: `api_cache` (10MB)
- Max cache size: 1GB
- Cache validity: 365 days for 200 responses
- Cache key: Based on scheme, host, URI, and query parameters
- Cache status header: `X-Cache-Status` shows cache hit/miss status

## In n8n

Add the `X-Cache: 1` header only to requests you want cached. All other requests will bypass the cache completely.