44 lines
2.2 KiB
Nginx Configuration File
44 lines
2.2 KiB
Nginx Configuration File
# ----------------------------------------------------------------------
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# | Cache Control |
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# ----------------------------------------------------------------------
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# Serve resources with appropriate cache control directives.
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#
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# The `Cache-Control` header field holds directives (instructions) that control
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# caching in browsers and shared caches (e.g. Proxies, CDNs).
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# Its use targets web performances improvement by specifying the expected
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# client and network caches behaviors.
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#
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# The usable cache directives are listed here:
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# https://www.iana.org/assignments/http-cache-directives/http-cache-directives.xml
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#
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# The cache directives are documented here:
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# https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Cache-Control#response_directives
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#
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# (!) Enable and configure this configuration with care.
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# Default values should embrace conformance for static files and simple
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# apps, but cache control definition at backend level is highly preferred.
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# Incorrect directives can lead to data leaks, or can degrade performances.
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#
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# More specifically, in-depth understanding on `public` vs `private`
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# directives meanings is highly recommended. A resource with `public` will
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# be cached by shared caches like CDN, even if a user session is active.
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#
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# (*) To avoid duplication of the directive `no-cache` on `Cache-Control`,
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# the value is skipped here.
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# The directive `no-cache` is already defined by Nginx `expires` when set
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# to `epoch`. This ensure a correct value enforcement whenever cache
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# control configuration is used or not.
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# Cache expiration configuration `expires` is described in the file
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# h5bp/web_performance/cache_expiration.conf.
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# https://nginx.org/en/docs/http/ngx_http_headers_module.html#expires
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#
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# https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Cache-Control
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# https://www.rfc-editor.org/rfc/rfc9111.html
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# https://www.rfc-editor.org/rfc/rfc8246.html
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# https://www.rfc-editor.org/rfc/rfc5861.html
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# https://www.iana.org/assignments/http-cache-directives/http-cache-directives.xml
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# https://cache-tests.fyi/
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add_header Cache-Control $cache_control;
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