I’m new to ngnix. I’m trying to use nginx cache for static files in server.

nginx configuration for that specific server in http block:

proxy_cache_path /var/cache/nginx levels=1:2 keys_zone=static_cache:10m max_size=5g inactive=60m use_temp_path=off;

upstream backend {
    server 127.0.0.1:8000;  # Localhost
}

server { 
    listen 8000;  
    root /var/www/html;
    index index.html;  
    server_name _;  
    location / { 
        try_files $uri $uri/ =404; 
    } 
}

server {
    server_name example.com;

    location / {
    proxy_set_header Host $host; # or even proxy_set_header Host example.com
        proxy_pass http://backend/;
        proxy_cache static_cache;
        proxy_cache_valid 200 302 10m;
        proxy_cache_valid 404 1m;
        add_header X-Cache-Status $upstream_cache_status;
        proxy_cache_use_stale error timeout invalid_header updating http_500 http_502 http_503 http_504;
    }

    listen 443 ssl;
    ssl_certificate /path/to/../fullchain.pem;
    ssl_certificate_key /path/to/../privkey.pem;
    include /path/to/../options-ssl-nginx.conf;
    ssl_dhparam /path/to/../ssl-dhparams.pem
}

server {
    if ($host = example.com) {
        return 301 https://$host$request_uri;
    }
    listen 80;
    server_name example.com;
    return 404;
}

after setting this configuration everything worked fine for nginx cache, but there was a problem with urls where had index.html in them.
when we called something like https://example.com/static/folder without / the url in browser turns to http://backend:8000/static/folder/ but if call the url with / like http://example.com/static/folder/, it returns the page without any problem and the url would be https://example.com/static/folder/.

I want to know how to fix this behaviour or if there is any better solution for caching in nginx here.

i tried to define Host like:

proxy_set_header Host $host; # or even proxy_set_header Host example.com

but it didn’t change anything!