# ----------------------------------------------------------------------
# | Cache expiration                                                   |
# ----------------------------------------------------------------------

# Serve resources with a far-future expiration date.
#
# (!) If you don't control versioning with filename-based cache busting, you
#     should consider lowering the cache times to something like one week.
#
# https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Cache-Control
# https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Expires
# https://nginx.org/en/docs/http/ngx_http_headers_module.html#expires

map $sent_http_content_type $expires {
  # Default: Fallback
  default                                 1y;

  # Default: No content
  ""                                      off;

  # Specific: Assets
  ~*image/svg\+xml                        1y;
  ~*image/vnd.microsoft.icon              1w;
  ~*image/x-icon                          1w;

  # Specific: Manifests
  ~*application/manifest\+json            1w;
  ~*text/cache-manifest                   epoch;

  # Specific: Data interchange
  ~*application/atom\+xml                 1h;
  ~*application/rdf\+xml                  1h;
  ~*application/rss\+xml                  1h;

  # Specific: Documents
  ~*text/html                             epoch;
  ~*text/markdown                         epoch;
  ~*text/calendar                         epoch;

  # Specific: Other
  ~*text/x-cross-domain-policy            1w;

  # Generic: Data
  ~*json                                  epoch;
  ~*xml                                   epoch;

  # Generic: WebAssembly
  # ~*application/wasm                    1y; # default

  # Generic: Assets
  # ~*application/javascript              1y; # default
  # ~*application/x-javascript            1y; # default
  # ~*text/javascript                     1y; # default
  # ~*text/css                            1y; # default

  # Generic: Medias
  # ~*audio/                              1y; # default
  # ~*image/                              1y; # default
  # ~*video/                              1y; # default
  # ~*font/                               1y; # default
}

expires $expires;