XenForo Forum with Nginx fastcgi_cache full page guest caching

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Overview Updates (5)

Add: fastcgi_cache_lock on;

Add: fastcgi_cache_lock on;
Restricts the number of concurrent attempts to populate the cache, so that when a cached entry is being created, further requests for that resource are queued up in NGINX.
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For ngx_pagespeed users

For ngx_pagespeed users, add to your config "pagespeed ModifyCachingHeaders off;".

Use ramdisk (tmpfs) for cached content.

fastcgi_cache_path /var/run/nginx_fastcgi_cache levels=1:2 keys_zone=fastcgicache:200m inactive=30m;
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Added HTTP Strict Transport Security (HSTS).

Added:
Code: 
#add_header Strict-Transport-Security "max-age=63072000; includeSubDomains; preload" always;

For HTTP Strict Transport Security (HSTS).
More info why it's needed to be added again: https://www.nginx.com/blog/http-strict-transport-security-hsts-and-nginx/

Remove mapping for request_method and directly specify to only cache GET request method. v1.5

fastcgi_cache_methods GET;
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