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bogdanpetreabogdanpetrea
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Add support for page cache
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‎php/docker/templates/nginx-vhost-conf.d/30-well-knonw-locations.conf renamed to ‎php/docker/templates/nginx-vhost-conf.d/30-well-known-locations.conf

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‎php/docker/templates/nginx-vhost-conf.d/75-page-cache-locations.conf

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# vim: set ft=nginx:
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{{- if eq .Env.STACK_PAGE_CACHE_BACKEND "redis" }}
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location = /.stack-cache-fetch {
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internal;
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set $redis_key $args;
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redis_pass {{ default "localhost:6379" .Env.STACK_PAGE_CACHE_REDIS_HOST_PATH }};
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}
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location = /.stack-cache-store {
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internal;
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set_unescape_uri $exptime $arg_exptime;
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set_unescape_uri $key $arg_key;
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redis2_query set $key $echo_request_body;
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redis2_query expire $key $exptime;
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redis2_pass {{ default "localhost:6379" .Env.STACK_PAGE_CACHE_REDIS_HOST_PATH }};
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}
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{{- else if eq .Env.STACK_PAGE_CACHE_BACKEND "memcached" }}
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location = /.stack-cache-fetch {
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internal;
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set $memc_key $args;
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memc_connect_timeout 500ms;
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memc_read_timeout 500ms;
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memc_ignore_client_abort on;
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memc_pass {{ default "127.0.0.1:11211" .Env.STACK_PAGE_CACHE_MEMCACHED_HOST_PATH }};
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}
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location = /.stack-cache-store {
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internal;
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set_unescape_uri $exptime $arg_exptime;
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set_unescape_uri $key $arg_key;
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set $memc_key $key;
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set $memc_exptime $exptime;
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memc_connect_timeout 500ms;
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memc_send_timeout 500ms;
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memc_ignore_client_abort on;
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memc_pass {{ default "127.0.0.1:11211" .Env.STACK_PAGE_CACHE_MEMCACHED_HOST_PATH }};
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}
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{{- end }}

‎php/docker/templates/nginx-vhost-conf.d/80-index.conf

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# vim: set ft=nginx:
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{{- $stackBackends := list "redis" "memcached" "custom" }}
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{{- $truthStrings := list "true" "on" "yes" -}}
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{{- $keyPrefix := default "nginx-cache:" .Env.STACK_PAGE_CACHE_KEY_PREFIX }}
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{{- $keyUID := default "https$request_method$host$request_uri" .Env.STACK_PAGE_CACHE_KEY_UID }}
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location / {
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try_files $uri $uri/ /index.php$is_args$args;
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}
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location ~ \.php$ {
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{{- if has .Env.STACK_PAGE_CACHE_BACKEND $stackBackends }}
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set $skip_cache 0;
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# POST requests and urls with a query string should always go to PHP
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if ($request_method = POST) {
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set $skip_cache 1;
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}
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if ($query_string != "") {
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set $skip_cache 1;
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}
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# Don't cache uris containing the following segments
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if ($request_uri ~* "/wp-admin/|/xmlrpc.php|wp-.*.php|/feed/|index.php|sitemap(_index)?.xml") {
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set $skip_cache 1;
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}
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# Don't use the cache for logged in users or recent commenters
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if ($http_cookie ~* "comment_author|wordpress_[a-f0-9]+|wp-postpass|wordpress_no_cache|wordpress_logged_in") {
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set $skip_cache 1;
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}
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set $key "";
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# Use salted keys with memcached by default, for implementing cache flush
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{{- if and (eq .Env.STACK_PAGE_CACHE_BACKEND "memcached") ( has (default "on" .Env.STACK_PAGE_CACHE_MEMCACHED_USE_SALT) $truthStrings) }}
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rewrite_by_lua '
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local memcached = require "resty.memcached"
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local memc, err = memcached:new()
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if not memc then
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ngx.log(ngx.ERR, "failed to instantiate memcached: ", err)
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return
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end
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memc:set_timeout(1000)
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local ok, err = memc:connect("{{ default "127.0.0.1:11211" .Env.STACK_PAGE_CACHE_MEMCACHED_HOST_PATH }}")
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if not ok then
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ngx.log(ngx.ERR, "failed to connect to memcached: ", err)
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return
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end
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local keyPrefix = "{{ $keyPrefix }}"
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local saltKey = keyPrefix .. "salt"
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local salt, flags, err = memc:get(saltKey)
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if err then
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ngx.log(ngx.ERR, "failed to get memcached salt: ", err)
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return
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end
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if not salt then
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ngx.log(ngx.INFO, "memcached salt not found, attempting to set one...")
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salt = os.time()
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local ok, err = memc:set(saltKey, salt)
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if not ok then
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ngx.log(ngx.ERR, "failed to set memcached salt: ", err)
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return
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end
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end
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ngx.var.key = keyPrefix .. salt .. ":{{ $keyUID }}"
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local ok, err = memc:close()
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if not ok then
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ngx.say("failed to close memcached: ", err)
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return
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end
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';
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{{- else }}
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# default key is nginx-cache:https$request_method$host$request_uri
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set $key {{ $keyPrefix }}{{ $keyUID }};
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{{- end }}
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if ($key = "") {
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set $skip_cache 1;
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}
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try_files $uri =404;
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srcache_fetch_skip $skip_cache;
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srcache_store_skip $skip_cache;
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srcache_store_statuses {{ default "200 301 302" .Env.STACK_PAGE_CACHE_STORE_STATUSES }};
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# https://github.com/openresty/srcache-nginx-module#srcache_response_cache_control
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srcache_response_cache_control {{ default "on" .Env.STACK_PAGE_CACHE_RESPONSE_CACHE_CONTROL }};
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set_escape_uri $escaped_key $key;
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srcache_fetch GET /.stack-cache-fetch $key;
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srcache_store PUT /.stack-cache-store key=$escaped_key&exptime={{ default "360" .Env.STACK_PAGE_CACHE_EXPIRE_SECONDS | atoi }};
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more_set_headers "x-cache-skip $skip_cache";
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more_set_headers "x-cache-key $key";
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more_set_headers "x-cache-fetch $srcache_fetch_status";
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more_set_headers "x-cache-store $srcache_store_status";
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{{- end }}
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fastcgi_pass $upstream;
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fastcgi_read_timeout {{ max 60 (add 10 (default "30" .Env.PHP_REQUEST_TIMEOUT | atoi)) }};
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fastcgi_index index.php;

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