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You have to use #:cache mode while you defining URL rule handler.
(get "/certain-rule" #:cache mode (lambda (rc) ...))
NOTE: the default value of maxage is defined by cache.maxage in /etc/artanis/artanis.conf. The default value is 3600 seconds.
mode could be:
Let’s see the simplest cache test (for dynamica content):
(get "/new" #:cache #t (lambda (rc) (:cache rc "hello world")))
If you want to cache a static file, and permit proxies cache the content:
(get "/hide" #:cache '(public "pub/some.html") (lambda (rc) (:cache rc)))
But, if your current URL rule is used for authentication (once you use #:auth), the cache will be changed to private even if you specify public.
(get "/pauth" #:auth `(basic ,(lambda (rc u p) (and (string=? u "nala") (string=? p "123")))) #:cache '(public "pub/some.html") ; will be changed to 'private' automatically. (lambda (rc) (:cache rc)))