P}bgdZddlmZddlmZmZddlmZmZm Z m Z m Z ddl m Z Gdde ZGdd e ZGd d eeZd S) a Cache middleware. If enabled, each Django-powered page will be cached based on URL. The canonical way to enable cache middleware is to set ``UpdateCacheMiddleware`` as your first piece of middleware, and ``FetchFromCacheMiddleware`` as the last:: MIDDLEWARE = [ 'django.middleware.cache.UpdateCacheMiddleware', ... 'django.middleware.cache.FetchFromCacheMiddleware' ] This is counter-intuitive, but correct: ``UpdateCacheMiddleware`` needs to run last during the response phase, which processes middleware bottom-up; ``FetchFromCacheMiddleware`` needs to run last during the request phase, which processes middleware top-down. The single-class ``CacheMiddleware`` can be used for some simple sites. However, if any other piece of middleware needs to affect the cache key, you'll need to use the two-part ``UpdateCacheMiddleware`` and ``FetchFromCacheMiddleware``. This'll most often happen when you're using Django's ``LocaleMiddleware``. More details about how the caching works: * Only GET or HEAD-requests with status code 200 are cached. * The number of seconds each page is stored for is set by the "max-age" section of the response's "Cache-Control" header, falling back to the CACHE_MIDDLEWARE_SECONDS setting if the section was not found. * This middleware expects that a HEAD request is answered with the same response headers exactly like the corresponding GET request. * When a hit occurs, a shallow copy of the original response object is returned from process_request. * Pages will be cached based on the contents of the request headers listed in the response's "Vary" header. * This middleware also sets ETag, Last-Modified, Expires and Cache-Control headers on the response object. )settings)DEFAULT_CACHE_ALIAScaches) get_cache_key get_max_agehas_vary_headerlearn_cache_keypatch_response_headers)MiddlewareMixinc.eZdZdZfdZdZdZxZS)UpdateCacheMiddlewarea6 Response-phase cache middleware that updates the cache if the response is cacheable. Must be used as part of the two-part update/fetch cache middleware. UpdateCacheMiddleware must be the first piece of middleware in MIDDLEWARE so that it'll get called last during the response phase. ct|tj|_d|_tj|_tj|_ t|j |_ dSN) super__init__rCACHE_MIDDLEWARE_SECONDS cache_timeout page_timeoutCACHE_MIDDLEWARE_KEY_PREFIX key_prefixCACHE_MIDDLEWARE_ALIAS cache_aliasrcacheself get_response __class__s j/home/e360mart.nyusoft.in/public_html/e360mart_env/lib/python3.11/site-packages/django/middleware/cache.pyrzUpdateCacheMiddleware.__init__@sV &&&%> ">#:D,- c0t|do|jS)N_cache_update_cache)hasattrr!)rrequestresponses r_should_update_cachez*UpdateCacheMiddleware._should_update_cacheHsw 566V7;VVrcT||s|S|js |jdvr|S|js|jrt |dr|Sd|ddvr|Sj!t|j ndkr|St|r|jdkryt||j j t|d r/t|jr|fd nj ||S) zSet the cache, if needed.)i0Cookieprivatez Cache-ControlNrr'rrenderc<j|Sr)rset)r cache_keyrtimeouts rz8UpdateCacheMiddleware.process_response..nsdjnnY7CCr)r% streaming status_codeCOOKIEScookiesrgetrrrr r rrr"callabler,add_post_render_callbackr.)rr#r$r0r1s` @@rprocess_responsez&UpdateCacheMiddleware.process_responseKs{(((;; O   !5Z!G!GO 8#3 RZ8[8[ O  _b99 9 9O# ?"(++G,Ax111  =x+s22'7DO[_[efffIx** =x/H/H =11CCCCCC y(G<<<r)__name__ __module__ __qualname____doc__rr%r: __classcell__rs@rr r 7sc.....WWW'''''''rr c(eZdZdZfdZdZxZS)FetchFromCacheMiddlewarea! Request-phase cache middleware that fetches a page from the cache. Must be used as part of the two-part update/fetch cache middleware. FetchFromCacheMiddleware must be the last piece of middleware in MIDDLEWARE so that it'll get called last during the request phase. ct|tj|_tj|_t|j|_dSr) rrrrrrrrrrs rrz!FetchFromCacheMiddleware.__init__}sC &&&">#:D,- rcZ|jdvr d|_dSt||jd|j}| d|_dS|j|}|B|jdkr7t||jd|j}|j|}| d|_dSd|_|S)zn Check whether the page is already cached and return the cached version if available. )GETHEADFNrEr+TrF)methodr!rrrr7)rr#r0r$s rprocess_requestz(FetchFromCacheMiddleware.process_requests > 0 0*/G '4"'4?ETTT  *.G '4:>>),,  & 8 8%gtdjYYYIz~~i00H  *.G '4',#r)r;r<r=r>rrHr?r@s@rrBrBusQ..... rrBc$eZdZdZdfd ZxZS)CacheMiddlewarez Cache middleware that provides basic behavior for many simple sites. Also used as the hook point for the cache decorator, which is generated using the decorator-from-middleware utility. Nc 6t| |d}|d}||_n#t$rYnwxYw |d}|t}||_t |j|_n#t$rYnwxYw|||_||_ dS)Nrr) rrrKeyErrorrrrrrr)rrrrkwargsrrrs rrzCacheMiddleware.__init__s &&&   -J! (DOO    D   /K"1 *D  01DJJ    D   $!.D (s!8 AA /A99 BB)NN)r;r<r=r>rr?r@s@rrJrJsG ))))))))))rrJN)r> django.confrdjango.core.cacherrdjango.utils.cacherrrr r django.utils.deprecationr r rBrJr*rrrSs$++Z! 99999999544444;;;;;O;;;|((((((((V ) ) ) ) )+-E ) ) ) ) )r