Client side browser-based caching for monitored resources

Abstract

Methods and systems are provided for a browser in a client device that receives a user interface script-code snippet from a web page. A chain logic engine determines whether an in-memory map indicates an output value of prior execution of the UI script-code snippet. If the in-memory map does indicate the output value, it is returned from the in-memory map to generate the user interface. If not, the engine determines whether an in-local storage map indicates the prior executed snippet output. If the in-local storage map indicates the prior executed snippet output, it is returned from the in-local storage map to generate the user interface, and it is stored in the in-memory map. If not, the UI script-code snippet is executed to generate the output value, which is used to generate the user interface, and is stored in the in-memory map and in the in-local storage map.

What is claimed is: 
     
         1 . A method in a browser in a client device, comprising:
 receiving, in the browser, a web page that includes a user interface (UI) script-code snippet;   monitoring in the browser, according to a browser security policy parameter, an activity related to the web page;   detecting a first event in the web page to initiate the monitored activity associated with the UI script-code snippet;   applying a browser security policy defined by the browser security policy parameter;   controlling execution of the UI script-code snippet to generate an output value;   generate a first user interface of the web page based at least upon the generated output value;   storing the output value in at least one of an in-memory map or an in-local storage map of the browser;   detecting a second event in the web page to initiate the monitored activity;   determining the at least one of the in-memory map or the in-local storage map stores the output value of the UI script-code snippet;   retrieving the output value of the UI script-code snippet from the determined at least one of the in-memory map; and   generating a second user interface of the web page based at least upon the retrieved output value.   
     
     
         2 . The method of  claim 1 , wherein said applying a browser security policy comprises:
 blocking the activity.   
     
     
         3 . The method of  claim 1 , wherein said detecting a first event in the web page comprises:
 detecting a user input to the web page to request the activity.   
     
     
         4 . The method of  claim 1 , wherein the monitored activity includes at least one of:
 a clipboard action,   a printing action,   a download action, or   an upload action.   
     
     
         5 . The method of  claim 1 , wherein said detecting a first event in the web page is performed in a first monitored session and said detecting a second event in the web page is performed in a second monitored session. 
     
     
         6 . The method of  claim 1 , wherein the output value includes code structured for at least one of monitoring policies of the browser or enforcing policies of the browser. 
     
     
         7 . The system of  claim 1 , wherein said storing the output value comprises:
 generating a key by performing a hashing function on the UI script-code snippet; and   storing the output value in the in-memory map using the key as an index.   
     
     
         8 . A system in a client device, comprising:
 a processor; and   a memory device that stores program code structured to cause the processor to:
 monitor in the browser, according to a browser security policy parameter, an activity related to a web page that includes a user interface (UI) script-code snippet; 
 detect a first event in the web page to initiate the monitored activity associated with the UI script-code snippet; 
 apply a browser security policy defined by the browser security policy parameter; 
 control execution of the UI script-code snippet to generate an output value; 
 generate a first user interface of the web page based at least upon the retrieved output value; 
 store the output value in at least one of an in-memory map or an in-local storage map of the browser; 
 detect a second event in the web page to initiate the monitored activity; 
 determine the at least one of the in-memory map or the in-local storage map stores the output value of the UI script-code snippet; 
 retrieve the output value of the UI script-code snippet from the determined at least one of the in-memory map; and 
 generate a second user interface of the web page based at least upon the retrieved output value. 
   
     
     
         9 . The system of  claim 8 , wherein the browser security policy is configured to block the activity. 
     
     
         10 . The system of  claim 8 , wherein the first event is a user input to the web page to request the activity 
     
     
         11 . The system of  claim 10 , wherein the monitored activity includes at least one of:
 a clipboard action,   a printing action,   a download action, or   an upload action.   
     
     
         12 . The system of  claim 10 , wherein the first event is detected in the web page in a first monitored session and the second event is detected in the web page in a second monitored session. 
     
     
         13 . The system of  claim 10 , wherein the output value includes code structured for at least one of monitoring policies of the browser or enforcing policies of the browser 
     
     
         14 . The system of  claim 8 , wherein the program code is further structured to cause the processor to:
 generate a key by performing a hashing function on the UI script-code snippet; and   store the output value in the in-memory map using the key as an index.   
     
     
         15 . A method in a browser in a client device, comprising:
 receiving, in the browser, a web page that includes a user interface (UI) script-code snippet;   monitoring in the browser, according to a browser security policy parameter, an activity related to the web page;   detecting a first event in the web page to initiate the monitored activity associated with the UI script-code snippet;   applying a browser security policy defined by the browser security policy parameter;   in response to determining the in-memory map and the in-local storage map do not store the output value, controlling execution of the UI script-code snippet to generate the output value of the UI script-code snippet;   generating a first user interface of the web page based at least upon the generated output value; and   storing the output value in the in-memory map and in the in-local storage map.   
     
     
         16 . The method of  claim 15 , further comprising:
 detecting a second event in the web page to initiate the monitored activity;   determining at least one of the in-memory map or the in-local storage map stores the output value of the UI script-code snippet;   retrieving the output value of the UI script-code snippet from the determined at least one of the in-memory map or the in-local storage map; and   generating a user interface of the web page based at least upon the retrieved output value.   
     
     
         17 . The method of  claim 15 , wherein the output value includes code structured for at least one of monitoring policies of the browser or enforcing policies of the browser. 
     
     
         18 . The method of  claim 15 , wherein said controlling execution comprises:
 transmitting the UI script-code snippet to a server device for performing the execution of the script-code snippet to generate the output value; and   receiving the output value from the server device.   
     
     
         19 . The method of  claim 15 , wherein said applying a browser security policy comprises:
 blocking the activity.   
     
     
         20 . The method of  claim 15 , wherein said storing the output value comprises:
 generating a key by performing a hashing function on the UI script-code snippet; and   storing the output value in the in-memory map using the key as an index.CLIENT SIDE BROWSER-BASED CACHING FOR MONITORED RESOURCES