Labels:text | screenshot | diagram | circle | number | font | line OCR: CACHING IN internet Pane taichied on Step A -Proxy Site 1 “““· Step A - Step B Proxy ¿Proxy cached on:Stop A on Step B Site 2 Site Figure 2: With hierarchical caching, each site helps cache for other sites belono it in the bierarcby. For example, Sites 2 and 3 are connected to Site 1, which bas an Internet link. When Site 2 requests a URL ., Site I retrieves it, passes it on to Site 2, and both sites cache it. If Site 3 requests the same URI, Site 1's proxy server forwards it from its local cache, and Site 3 also caches it. Future requests for that URI, are then processed locally without the use of a WAN link.
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