I am new to this and just started using nginx for my pet projects. now i would like to install and use ngx_cache_purge module from https://github.com/nginx-modules/ngx_cache_purge, since it has some cool integrations with wordpress.
here is the docker image i came up with:
FROM nginx:1.18.0
RUN apt update && apt install -y --no-install-recommends --no-install-suggests \
wget gcc make zlib1g-dev libpcre3-dev
RUN mkdir -p /home/nginx && cd /home/nginx && \
wget -qO - https://nginx.org/download/nginx-1.18.0.tar.gz | tar zxfv - && \
wget -qO - https://github.com/nginx-modules/ngx_cache_purge/archive/refs/tags/2.5.1.tar.gz | tar zxfv -
RUN cd /home/nginx/nginx-1.18.0 && \
./configure --add-dynamic-module=../ngx_cache_purge-2.5.1 --with-compat && \
make modules && \
cp objs/ngx_http_cache_purge_module.so /usr/lib/nginx/modules/
here is a sample nginx config:
load_module modules/ngx_http_cache_purge_module.so;
http {
gzip off;
gzip_vary off;
gzip_proxied off;
gzip_comp_level 6;
gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;
proxy_cache_path /var/cache/nginx/proxy_cache levels=1:2 use_temp_path=off keys_zone=proxycache:256m
inactive=30d
max_size=4g;
proxy_cache_purge PURGE from 127.0.0.1;
server {
listen *:8008;
location ~* /purgea(/.*) {
add_header X-url-match $scheme${request_method}my_proxy_server$1$args always;
proxy_cache_purge proxycache $scheme${request_method}my_proxy_server$1$args;
cache_purge_response_type json;
}
}
}
here is confirmation that cache file exists:
root@a65be2e6f69c:/# grep -R -a -E "^KEY:" /var/cache/nginx/proxy_cache/ | grep "jquery.min.js?ver=3.6.0"
/var/cache/nginx/proxy_cache/b/3c/e0ec9b13973d56a5780010cadccc73cb:KEY: httpGETmy_proxy_server/wp-includes/js/jquery/jquery.min.js?ver=3.6.0
root@a65be2e6f69c:/#
here is the request i am making to purge the cache for that uri:
root@a65be2e6f69c:/# curl -v localhost:8008/purgea/wp-includes/js/jquery/jquery.min.js?ver=3.6.0
> GET /purgea/wp-includes/js/jquery/jquery.min.js?ver=3.6.0 HTTP/1.1
> Host: localhost:8008
> User-Agent: curl/7.64.0
> Accept: */*
>
< HTTP/1.1 412 Precondition Failed
< Server: nginx
< Date: Fri, 13 May 2022 01:04:17 GMT
< Content-Type: text/html; charset=UTF-8
< Content-Length: 166
< Connection: keep-alive
< X-url-match: httpGETmy_proxy_server/wp-includes/js/jquery/jquery.min.jsver=3.6.0
<
<html>
<head><title>412 Precondition Failed</title></head>
<body>
<center><h1>412 Precondition Failed</h1></center>
<hr><center>nginx</center>
</body>
</html>
* Connection #0 to host localhost left intact
root@a65be2e6f69c:/#
