My current config is Nginx webserver as a reverse proxy with Apache at backend for dynamic pages and Apache is configured with PHP-FPM.
My dynamic pages don't change often so I am trying to use Nginx microcaching but can't seem to get working.
Here is my nginx.conf (possible unnecessary stuff excluded):
http {
sendfile on;
tcp_nopush on;
tcp_nodelay on;
client_header_timeout 10s;
client_body_timeout 10s;
client_max_body_size 200k;
client_header_buffer_size 2k;
client_body_buffer_size 200k;
large_client_header_buffers 3 1k;
send_timeout 3m;
keepalive_timeout 60 60;
reset_timedout_connection on;
ignore_invalid_headers on;
connection_pool_size 256;
request_pool_size 4k;
output_buffers 4 32k;
postpone_output 1460;
include mime.types;
default_type application/octet-stream;
# Compression gzip
gzip on;
gzip_vary on;
gzip_disable "MSIE [1-6]\.";
gzip_proxied any;
gzip_min_length 512;
gzip_comp_level 6;
gzip_buffers 8 64k;
gzip_types text/plain text/xml text/css text/js application/x-javascript application/xml image/png image/x-icon image/gif image/jpeg image/svg+xml application/xml+rss text/javascript application/atom+xml application$
# Proxy settings
proxy_redirect off;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
#proxy_pass_header Set-Cookie;
proxy_connect_timeout 90;
proxy_send_timeout 90;
proxy_read_timeout 90;
proxy_buffers 32 4k;
#proxy_cache_path /var/cache/nginx levels=2 keys_zone=cache:10m inactive=60m max_size=512m;
#proxy_cache_key "$host$request_uri $cookie_user";
#proxy_temp_path /var/cache/nginx/temp;
#proxy_ignore_headers Expires Cache-Control;
#proxy_cache_use_stale error timeout invalid_header http_502;
#proxy_cache_valid any 1d;
#open_file_cache max=50000 inactive=60s;
#open_file_cache_valid 120s;
#open_file_cache_min_uses 2;
#open_file_cache_errors off;
#open_log_file_cache max=10000 inactive=30s min_uses=2;
# SSL Settings
ssl_session_cache shared:SSL:10m;
ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
ssl_prefer_server_ciphers on;
ssl_ciphers "EECDH+ECDSA+AESGCM:EECDH+aRSA+AESGCM:EECDH+ECDSA+SHA384:EECDH+ECDSA+SHA256:EECDH+aRSA+SHA384:EECDH+aRSA+SHA256:EECDH+aRSA!RC4:EECDH:!RC4:!aNULL:!eNULL:!LOW:!3DES:!MD5:!EXP:!PSK:!SRP:!DSS";
# Logs
#log_format main '$remote_addr - $remote_user [$time_local] $request '
# '"$status" $body_bytes_sent "$http_referer" '
# '"$http_user_agent" "$http_x_forwarded_for"';
log_format bytes '$body_bytes_sent';
#access_log /var/log/nginx/access.log main;
access_log off;
## Advanced microcaching
## set cache dir, hierarchy, max key size and total size
fastcgi_cache_path /dev/shm/microcache levels=1:2 keys_zone=microcache:50M max_size=2000M inactive=2h;
## set cache log location, so you can evaluate hits
log_format cache '$remote_addr - $remote_user [$time_local] "$request" '
'$status $upstream_cache_status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';
## Set a cache_uid variable for authenticated users.
map $http_cookie $cache_uid {
default nil;
~SESS[[:alnum:]]+=(?<session_id>[[:alnum:]]+) $session_id;
}
## mapping cache to request method
map $request_method $no_cache {
default 1; # by default do not cache
HEAD 0; # cache HEAD requests
GET 0; # cache GET requests
}
# Include additional configuration
include /etc/nginx/cloudflare.inc;
include /etc/nginx/conf.d/*.conf;
}
My vhost config (relevant stuff only) is:
location / {
include /etc/nginx/ddos.d/http1.1_blocker.conf;
location ~.*\.(3gp|gif|jpg|jpeg|png|ico|wmv|avi|asf|asx|mpg|mpeg|mp4|pls|mp3|mid|wav|swf|flv|html|htm|txt|js|css|exe|zip|tar|rar|gz|tgz|bz2|uha|7z|doc|docx|xls|xlsx|pdf|iso|woff|ttf|svg|eot|sh)$ {
root /home/xtrefish/public_html;
expires max;
try_files $uri @backend;
}
error_page 405 = @backend;
error_page 500 = @custom;
add_header X-Cache "HIT from Backend";
add_header Strict-Transport-Security "max-age=31536000";
add_header X-Content-Type-Options nosniff;
proxy_pass http://134.0.118.72:8181;
include proxy.inc;
}
location @backend {
internal;
proxy_pass http://134.0.118.72:8181;
include proxy.inc;
}
location @custom {
internal;
proxy_pass http://134.0.118.72:8181;
include proxy.inc;
location @custom {
internal;
proxy_pass http://134.0.118.72:8181;
include proxy.inc;
}
location ~ .*\.(php|jsp|cgi|pl|py)?$ {
## Caching stuff is here
# Setup var defaults
set $no_cache "";
# If non GET/HEAD, don't cache & mark user as uncacheable for 1 second via cookie
if ($request_method !~ ^(GET|HEAD)$) {
set $no_cache "1";
}
# Drop no cache cookie if need be
# (for some reason, add_header fails if included in prior if-block)
if ($no_cache = "1") {
add_header Set-Cookie "_mcnc=1; Max-Age=2; Path=/";
add_header X-Microcachable "0";
}
# Bypass cache if no-cache cookie is set
if ($http_cookie ~* "_mcnc") {
set $no_cache "1";
}
# Bypass cache if flag is set
fastcgi_no_cache $no_cache;
fastcgi_cache_bypass $no_cache;
fastcgi_cache microcache;
fastcgi_cache_key $scheme$host$request_uri$request_method;
fastcgi_cache_valid 200 301 302 10m;
fastcgi_cache_use_stale updating error timeout invalid_header http_500;
fastcgi_pass_header Set-Cookie;
fastcgi_pass_header Cookie;
fastcgi_ignore_headers Cache-Control Expires Set-Cookie;
proxy_pass http://134.0.118.72:8181;
include proxy.inc;
}
I can confirm I am using PHP-FPM as info.php responds
Server API FPM/FastCGI
To test this, I have a microcache_test.php containing
<?php
/**
* Display microtime
* Requires PHP 5, preferably PHP 5.4+
* This function is only available on operating systems that
* support the gettimeofday() system call.
*
* Returns float in format seconds.microseconds
*/
echo ' Current microtime: ' . microtime(true);
And /microcache_test.php responds:
Request URL: https://example.com/mictest.php
Request Method: GET
Status Code: 200
Remote Address: 82.102.16.22:443
Referrer Policy: no-referrer-when-downgrade
cache-control: public
content-encoding: gzip
content-type: text/html; charset=UTF-8
date: Tue, 19 Feb 2019 09:13:58 GMT
server: nginx/1.15.8
status: 200
vary: Accept-Encoding
:authority: example.com
:method: GET
:path: /mictest.php
:scheme: https
accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8
accept-encoding: gzip, deflate, br
accept-language: en-US,en;q=0.9
cache-control: max-age=0
cookie: PHPSESSID=864e0ajkc6l1rbhepr651dp1t2
save-data: on
upgrade-insecure-requests: 1
user-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3626.109 Safari/537.36
So caching is certainly not working. My caching directories are 777 and I tried setting cache in htaccess in apache as well but to no avail (Nginx is set to ignore the headers anyway).
Any ideas what am I missing?
