yle-clj-common.ring.cache-headers-middleware — yle-clj-common 3.8.2

wrap-cache-headers clj

(wrap-cache-headers cacheable-uris
                    {:keys [max-age s-maxage] :as options}
                    handler)

Wraps the handler with a middleware which sets the value of Cache-Control header with directives based on options parameter.

You can set either :max-age (defaults to 30) or :s-maxage (no default). If both are provided, only s-maxage is applied (shared caches are supposed to ignore s-maxage if both are present).

The middleware is applied only if:

• the handler returns status code 404, or
• the request path matches one of the patterns listed in cacheable-uris parameter

Otherwise, directives no-cache, no-store, must-revalidate are set.