Multiple cache communication and uncacheable objects

A memory storing information including instructions, the instructions executable by a processor, the instructions including

• determining, at a first cache, an object signature responsive to an uncacheable object, said uncacheable object having been requested by a client coupled to a network from a server coupled to said network, wherein said first cache is configured so as to be coupled to said network in a location that is remote from both said client and said server, and said uncacheable object is dynamically generated by said server in response to a URL;
• sending said object signature to a second cache, wherein said second cache is configured so as to be coupled to said network in a location that is remote from both said client and said server;
• comparing, at said second cache, said object signature with a function of at least one uncacheable object;
• and
• refraining from sending said uncacheable object in response to said steps for comparing only if said object signature does not match said function of said uncacheable object.

A memory storing information including instructions, the instructions executable by a processor, the instructions including

• storing an uncacheable object at a first cache, said uncacheable object having been requested by a client coupled to a network from a server coupled to said network, wherein said first cache is configured so as to be coupled to said network in a location that is remote from both said client and said server, and said uncacheable object is dynamically generated by said server in response to a URL;
• determining an object signature at said first cache in response to said uncacheable object;
• sending said object signature to a second cache, wherein said second cache is configured so as to be coupled to said network in a location that is remote from both said client and said server;
• comparing said object signature with a function of at least one uncacheable object stored at said second cache;
• and
• sending said uncacheable object to said second cache in response to said steps for comparing if said object signature does not match said function.

A memory storing information including instructions, the instructions executable by a processor, the instructions including

• storing, at a first cache, a first uncacheable object and first information including a date stamp that is used to ascertain the staleness of said first uncacheable object, said first uncacheable object having been requested by a client coupled to a network from a server coupled to said network, wherein said first cache is configured so as to be coupled to said network in a location that is remote from both said client and said server and said first uncacheable object is dynamically generated by said server in response to a URL;
• storing, at a second cache, a second uncacheable object and second information including a date stamp that is used to ascertain the staleness of said second uncacheable object, wherein said second cache is configured so as to be coupled to said network in a location that is remote from both said client and said server and said second uncacheable object is dynamically generated by said server in response to a URL;
• comparing said first information with said second information;
• sending said first information to said second cache;
• and
• discarding said second uncacheable object if said first information does not match said second information.

A memory storing information including instructions, the instructions executable by a processor, the instructions including

• storing, at a first cache, an uncacheable object from a server and first information regarding the probability said uncacheable object will be stale, said uncacheable object having been requested by a client coupled to a network from said server coupled to said network, wherein said first cache is configured so as to be coupled to said network in a location that is remote from both said client and said server, and said uncacheable object is dynamically generated by said server in response to a URL;
• storing, at a second cache, a second uncacheable object for delivery to a client and second information regarding the probability that said second uncacheable object will be requested by said client, wherein said second cache is configured so as to be coupled to said network in a location that is remote from both said client and said server;
• sending said first information from said first cache to said second cache;
• sending said second information from said second cache to said first cache, and
• comparing said first information with said second information;
• and
• determining whether to discard said uncacheable object from said first cache in response to a result of said comparing step;
• wherein said first cache and said second cache operate together.

A memory storing information including instructions, the instructions executable by a processor, the instructions including

• providing a set of associations, at both a first cache and a second cache, such that each association in said set of associations includes a tag value and a dictionary element, wherein said set of associations concerns an uncacheable object having been requested by a client coupled to a network from a server coupled to said network, wherein said first cache and said second cache are configured so as to be coupled to said network in a location that is remote from both said client and said server and said uncacheable object is dynamically generated by said server in response to a URL;
• comparing at least one of said set of associations from said first cache with at least one of said set of associations from said second cache;
• discarding one or more of said set of associations at said second cache if one association included in said set of associations at said second cache matches one of said set of associations at said first cache;
• and
• sending from said first cache to said second cache said tag value or said dictionary element, in response to said steps for discarding, wherein said dictionary element and said tag value are associated with a web object.

A memory storing information including instructions, the instructions executable by a processor, the instructions including

• sending a dictionary element from a source to a destination, said source and said destination being coupled to a communication link;
• associating, at both said source and said destination, a first and second tag value with said dictionary element;
• comparing said first tag value with said second tag value;
• discarding said dictionary element at said destination if said first tag value for said dictionary element matches a second tag value for said dictionary element at said destination;
• and
• sending, from said source to said destination, said tag value or said dictionary element in response to said steps for discarding,
• wherein said dictionary element and said tag value concern an uncacheable object requested by a client coupled to a network from a server coupled to said network, wherein said source and said destination are configured so as to be coupled to said network in a location that is remote from both said client and said server and said uncacheable object is dynamically generated by said server in response to a URL.