US 10,951,726 B2Granted

Systems and methods for performing response based cache redirection

AssigneeCitrix Systems, Inc.

InventorsMugdha Agarwal, Rama Praveen, Ajay Soni, Minoo Gupta, Ram Goda

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Abstract

The present disclosure relates to methods and systems for performing response based cache redirection to a cache proxy. A device intermediary to a plurality of clients and a plurality of servers and in communication with a plurality of cache proxies, receives a request for content from a client. The request is for content from a server of the plurality of servers. The device forwards the request to the server. The device identifies a cache redirection policy that specifies an amount of bytes of a response to buffer to calculate a signature of the content of the response. The device computes the signature of the content of the response based on the amount of bytes of the response received from the server and buffered by the device. The device selects a cache proxy based on the computed signature and forwards the request of the client to the selected cache proxy.

Claims20

Dependent claims

A method of performing response based cache redirection to a cache proxy, the method comprising:

(a) receiving, by a device intermediary to a plurality of clients and one or more servers and in communication with a plurality of cache proxies, a request from a client for content from a server of the one or more servers to which the request is destined;
(b) determining, by the device, responsive to receiving the request, that the device is configured to apply one or more cache redirection policies;
(c) determining, by the device, responsive to determining that the device is configured to apply the one or more cache redirection policies, that a cache redirection policy of the one or more cache redirection policies is applicable to the request;
(d) applying, by the device, responsive to determining that the cache redirection policy is applicable to the request, the cache redirection policy to content of the request from the client to determine whether a response to the request is cacheable or not;
(e) forwarding, by the device, the request from the client to the server;
(f) storing, by the device, in a buffer, an amount of bytes of the response to the request, the amount of bytes of the response to store in the buffer specified by the cache redirection policy determined to be applicable to the request;
(g) computing, by the device, a signature of the content of the response based on the amount of bytes of the response received from the server and stored in the buffer by the device;
(h) determining, by the device, that the signature of the content of the response corresponds to a response previously stored in a cache proxy of the plurality of cache proxies;
(i) selecting, by the device responsive to determining that the signature of the content of the response corresponds to a response previously stored in the cache proxy, the cache proxy from the plurality of cache proxies using the computed signature of the content of the response;
and
(j) forwarding, by the device, the request of the client to the cache proxy.

8 more elements

A system for performing response based cache redirection to a cache proxy, the system comprising:

a device intermediary to a plurality of clients and one or more servers, the device in communication with a plurality of cache proxies;
wherein the device is configured to
receive, from a client, a request for content from a server of the one or more servers to which the request for content is destined;
determine, responsive to receiving the request, that the device is configured to apply one or more cache redirection policies;
determine, responsive to determining that the device is configured to apply the one or more cache redirection policies, that a cache redirection policy of the one or more cache redirection policies is applicable to the request;
apply, responsive to determining that the cache redirection policy is applicable to the request, the cache redirection policy to content of the request from the client to determine whether a response to the request is cacheable or not;
forward the request from the client to the server;
store, in a buffer, an amount of bytes of the response to the request, the amount of bytes of the response to store in the buffer specified by the cache redirection policy determined to be applicable to the request;
compute a signature of the content of the response based on the amount of bytes of the response received from the server and stored in the buffer by the device;
determine that the signature of the content of the response corresponds to a response previously stored in a cache proxy of the plurality of cache proxies;
select, responsive to determining that the signature of the content of the response corresponds to a response previously stored in the cache proxy, the cache proxy from the plurality of cache proxies using the computed signature of the content of the response;
and
forward the request of the client to the cache proxy.

10 more elements

Dependencies are inferred from the claim text.