Cache-Control headers in Nginx - Mini Project: Build & Apply

Cache-Control Headers with nginx

📖 Scenario: You are managing a website and want to control how browsers cache your files to improve loading speed and reduce server load.Using nginx, you will set Cache-Control headers to tell browsers how long to keep files before checking for updates.

🎯 Goal: Configure nginx to add Cache-Control headers with a max-age of 3600 seconds (1 hour) for static files.

📋 What You'll Learn

Create a basic nginx server block configuration

Add a variable to set the cache max-age time

Use the add_header directive to set Cache-Control header with max-age

Print the final nginx configuration snippet

💡 Why This Matters

🌍 Real World

Web servers use Cache-Control headers to tell browsers how long to keep files, improving speed and reducing server load.

💼 Career

DevOps engineers often configure nginx to optimize website performance and caching strategies.

1

Create a basic nginx server block

Create a basic nginx server block configuration with server listening on port 80 and serving files from /var/www/html using root directive.

Nginx

# Your code here

Need a hint?

Use server { ... } block with listen 80; and root /var/www/html;.

2

Add a variable for cache max-age

Inside the server block, add a variable called cache_time and set it to 3600 (seconds).

Nginx

server {
    listen 80;
    root /var/www/html;
    # Your code here
}

Need a hint?

Use set $cache_time 3600; inside the server block.

3

Add Cache-Control header with max-age

Inside the server block, add an add_header directive to set the Cache-Control header with the value max-age=$cache_time.

Nginx

server {
    listen 80;
    root /var/www/html;
    set $cache_time 3600;
    # Your code here
}

Need a hint?

Use add_header Cache-Control "max-age=$cache_time"; inside the server block.

4

Print the final nginx configuration

Print the complete nginx configuration stored in the variable nginx_config.

Nginx

# Your code here

Need a hint?

Use print(nginx_config) to display the configuration.