[
    "xcs",
    "via",
    "x-via",
    "x-cdn",
    "x-cdn-forward",
    "x-ser",
    "x-cf1",
    "cache",
    "x-cache",
    "x-cached",
    "x-cacheable",
    "x-hit-cache",
    "x-cache-status",
    "x-cache-hits",
    "x-cache-lookup",
    "cc_cache",
    "webcache",
    "chinacache",
    "x-req-id",
    "x-requestid",
    "cf-request-id",
    "x-github-request-id",
    "x-sucuri-id",
    "x-amz-cf-id",
    "x-airee-node",
    "x-cdn-provider",
    "x-fastly",
    "x-iinfo",
    "x-llid",
    "sozu-id",
    "x-cf-tsc",
    "x-ws-request-id",
    "fss-cache",
    "powered-by-chinacache",
    "verycdn",
    "yunjiasu",
    "skyparkcdn",
    "x-beluga-cache-status",
    "x-content-type-options",
    "x-download-options",
    "x-proxy-node",
    "access-control-max-age",
    "age",
    "etag",
    "expires",
    "pragma",
    "cache-control",
    "last-modified"
]