Proxy cache path configuration in Nginx - Mini Project: Build & Apply

Proxy Cache Path Configuration in Nginx

📖 Scenario: You are setting up a simple web server using Nginx. To improve performance and reduce load on the backend, you want to configure a proxy cache. This cache will store responses temporarily on disk so that repeated requests can be served faster.

🎯 Goal: Configure Nginx to use a proxy cache with a specific cache path on disk. You will create the cache path, set cache parameters, and then enable proxy caching for a backend server.

📋 What You'll Learn

Create a proxy cache path with a defined directory and cache parameters

Define a cache zone with a name and size

Configure a server block to use the proxy cache for requests

Print the final Nginx configuration snippet

💡 Why This Matters

🌍 Real World

Proxy caching in Nginx helps speed up websites by storing responses on disk, reducing backend load and improving user experience.

💼 Career

Understanding proxy cache configuration is essential for DevOps roles managing web servers and optimizing application performance.

1

Create the proxy cache path

Write a line to create a proxy_cache_path directive with the path /var/cache/nginx, a cache zone named my_cache with size 10m, and keys zone my_cache:10m. Include inactive=60m and max_size=100m parameters.

Nginx

# Your code here

Need a hint?

Use the proxy_cache_path directive with the exact path and parameters.

2

Define the proxy cache zone

Add a line to define a proxy_cache variable named my_cache inside an http block.

Nginx

proxy_cache_path /var/cache/nginx keys_zone=my_cache:10m inactive=60m max_size=100m;
# Your code here

Need a hint?

Inside the http block, set proxy_cache my_cache; to use the cache zone.

3

Configure server block to use proxy cache

Inside the http block, add a server block listening on port 80. Inside it, add a location / block that proxies requests to http://backend_server and enables proxy caching using proxy_cache my_cache;.

Nginx

proxy_cache_path /var/cache/nginx keys_zone=my_cache:10m inactive=60m max_size=100m;

http {
    proxy_cache my_cache;
    # Your code here
}

Need a hint?

Define a server block with listen 80; and a location / that proxies to http://backend_server and uses the cache.

4

Print the final Nginx configuration

Print the full Nginx configuration you wrote so far.

Nginx

proxy_cache_path /var/cache/nginx keys_zone=my_cache:10m inactive=60m max_size=100m;

http {
    proxy_cache my_cache;

    server {
        listen 80;

        location / {
            proxy_pass http://backend_server;
            proxy_cache my_cache;
        }
    }
}

# Your code here

Need a hint?

Use a print statement to output the full configuration exactly as written.