Object that specifies the time when resources stored in the cache must be revalidated 對(duì)象,它指定必須重新驗(yàn)證緩存中存儲(chǔ)的資源的時(shí)間。
If the cached copy of the resource is older than the specified time value, the resource must be revalidated 如果資源的緩存副本早于指定的時(shí)間值,則必須重新驗(yàn)證資源。
The cache synchronization date allows you to specify an absolute date when cached contents must be revalidated 緩存同步日期允許您指定必須重新驗(yàn)證緩存內(nèi)容的絕對(duì)日期。
If the cache entry was last revalidated prior to the cache synchronization date, revalidation with the server occurs 如果緩存項(xiàng)的上次重新驗(yàn)證日期比緩存同步日期早,則發(fā)生服務(wù)器重新驗(yàn)證。
If a fresh cache entry was last revalidated prior to the cache synchronization date, revalidation with the server still occurs 如果某一新緩存項(xiàng)的上次重新驗(yàn)證是在緩存同步日期之前進(jìn)行的,那么仍會(huì)通過(guò)服務(wù)器進(jìn)行重新驗(yàn)證。
If the cache synchronization date is set to a future date, the entry is revalidated every time it is requested, until the cache synchronization date passes 如果緩存同步日期被設(shè)置為某個(gè)將來(lái)的日期,則每次請(qǐng)求項(xiàng)時(shí)都重新驗(yàn)證它,直到緩存同步日期已過(guò)去。
The cache synchronization date policy criterion determines when a cached copy of a resource must be revalidated by checking it against the content on the server 緩存同步日期策略條件會(huì)根據(jù)服務(wù)器上的內(nèi)容對(duì)資源進(jìn)行檢查,確定何時(shí)必須對(duì)資源的緩存副本進(jìn)行重新驗(yàn)證。
If the cached copy of the resource is older than the amount of time specified, the resource must be revalidated by checking it against the content on the server 如果資源的緩存副本超出指定的時(shí)間長(zhǎng)度,則必須對(duì)該資源進(jìn)行重新驗(yàn)證,方法是根據(jù)服務(wù)器上的內(nèi)容對(duì)資源進(jìn)行檢查。
If the cache entry was revalidated after the cache synchronization date and there are no server revalidation requirements that make the cached entry invalid, the entry from the cache is used 如果緩存項(xiàng)的重新驗(yàn)證日期比緩存同步日期晚,而且沒(méi)有使緩存項(xiàng)無(wú)效的服務(wù)器重新驗(yàn)證要求,則使用緩存中的項(xiàng)。
If the cache entry was revalidated after the cache synchronization date and there are no additional freshness or server revalidation requirements that invalidate the cached entry, the entry from the cache is used 如果緩存項(xiàng)的重新驗(yàn)證是在緩存同步日期之后進(jìn)行的,并且沒(méi)有導(dǎo)致該緩存項(xiàng)失效的附加新鮮期或服務(wù)器重新驗(yàn)證要求,則使用來(lái)自緩存的項(xiàng)。