Buga hotuna da wakili na raba zai iya sake amfani da su
Ba wa amsoshin hoto da ake iya sake amfani da su a bainar jama'a takamaiman lokacin sabo da masu tabbatarwa, sannan fassara sake lodin burauza daban da sake amfani da ajiya na yau da kullum.
Don amsar hoto da ke bi ta hanyar ajiyar da aka raba da ake gani a HTTP, buga takamaiman lokaci da mai tabbatarwa. Sa'ad da hoton ba shi da haɗari don sake amfani da shi tsakanin masu amfani, misalin kanun amsa su ne:
Cache-Control: public, max-age=604800
ETag: "image-v4"Lokacin yana cikin daƙiƙa; 604800 mako ɗaya ne. Yi amfani da public kawai don abun ciki da aka yi nufin sake amfani da shi tsakanin masu amfani.
Idan burauza da wakilin da aka raba suna buƙatar lokuta daban-daban, s-maxage ne ke ba da lokacin ajiyar da aka raba. Misali, max-age=3600 tare da s-maxage=604800 yana ba ajiyar da aka raba dogon lokacin sabo.
Expires kwanan wata ne, ba tsawon lokaci ba
Expires yana ɗaukar hatimin lokaci a tsarin kwanan watan HTTP. max-age yana soke wannan filin, kuma s-maxage yana da fifiko ga ajiyoyin da aka raba. Ƙirƙiri kowace kwanar Expires yayin samar da amsar.
Sake lodi na iya neman tabbatarwa
Buƙatar da ta ƙunshi Cache-Control: no-cache tana neman nasarar tabbatarwa a asali kafin a sake amfani da amsar da aka ajiye. Hakan na iya faruwa ko da yake manufar sabo ta yau da kullum ta amsar za ta yarda da sake amfani.
Mai tabbatarwa yana ba ajiya damar duba hoton da ba a canza shi cikin inganci. Amsar 304 na iya tabbatar da wakilcin da aka ajiye ba tare da sake aika bayt ɗin hoton daga asali ba. Don haka zirga-zirga zuwa asali ba ya kawai nufin an jefar da abin da aka ajiye.
Kwatanta sake amfani na yau da kullum da sake lodi bayyananne yayin duba manufar.