Changeset 778 for draft-ietf-httpbis/latest/p6-cache.xml
- Timestamp:
- 09/03/10 12:20:08 (12 years ago)
- File:
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- 1 edited
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draft-ietf-httpbis/latest/p6-cache.xml
r773 r778 560 560 </artwork> 561 561 </figure> 562 563 562 <t> 564 563 The freshness_lifetime is defined in <xref target="calculating.freshness.lifetime" />; … … 658 657 <preamble>These are combined as</preamble> 659 658 <artwork type="code"> 660 659 corrected_received_age = max(now - date_value, age_value) 661 660 </artwork></figure> 662 661 <t> … … 665 664 </t> 666 665 <figure><artwork type="code"> 667 corrected_initial_age = corrected_received_age668 + (now - request_time)666 corrected_initial_age = corrected_received_age 667 + (now - request_time) 669 668 </artwork></figure> 670 669 <t> … … 680 679 In summary: 681 680 </t> 682 <figure><artwork type="code"> 683 age_value - Age header field-value received with the response 684 date_value - Date header field-value received with the response 685 request_time - local time when the cache made the request 686 resulting in the stored response 687 response_time - local time when the cache received the response 688 now - current local time 689 681 <t> 682 age_value 683 <list> 684 <t>Age header field-value received with the response.</t> 685 </list> 686 </t> 687 <t> 688 date_value 689 <list> 690 <t>Date header field-value received with the response.</t> 691 </list> 692 </t> 693 <t> 694 request_time 695 <list> 696 <t>Local time when the cache made the request resulting in the stored response.</t> 697 </list> 698 </t> 699 <t> 700 response_time 701 <list> 702 <t>Local time when the cache received the response.</t> 703 </list> 704 </t> 705 <t> 706 now 707 <list> 708 <t>Current local time.</t> 709 </list> 710 </t> 711 <figure> 712 <preamble>With these definitions, the current_age can be calculated as per:</preamble> 713 <artwork type="code"> 690 714 apparent_age = max(0, response_time - date_value); 691 715 corrected_received_age = max(apparent_age, age_value); … … 2312 2336 <section title="Since draft-ietf-httpbis-p6-cache-09" anchor="changes.since.09"> 2313 2337 <t> 2314 No ne yet.2338 No significant changes. 2315 2339 </t> 2316 2340 </section>
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