Methods and systems of client-side caching of pages with changing content

A server for a client-side caching system, comprising:

• a server for receiving a client request for a resource, creating and inserting a cache control object and a client-side script in a response to the client request, wherein the cache control object represents the last version of the resource, and wherein the client-side script appends the cache control object to the client request for the resource and causes the client to automatically re-request the resource with the appended cache control object so that if the last version of the resource is in the client cache, the resource is retrieved from the client cache rather than from the server, and if not, the resource is retrieved from the server.

A client-side caching system, comprising:

• a client for issuing a request based on a user selection for a resource stored on a server and for receiving a server response including a cache control object and a client-side script, wherein the cache control object represents the correct version of the resource, and wherein the client-side script appends the cache control object to the request for the resource, and without another user selection for the resource causes the client to automatically re-request the resource with the appended cache control object so that if the correct version of the resource is in the client cache, the resource is retrieved from the client cache rather than from the server, and if not, the resource is retrieved from the server.

A method of client-side caching in a server, comprising:

• receiving a client request for a web page;
• and
• inserting a cache control object and a client-side script in response to the client request, wherein the cache control object represents the last version of the web page, and wherein the client-side script appends the cache control object to the client request for the web page and causes the client to automatically re-request the web page with the appended cache control object so that if the last version of the web page is in the client cache, the web page is retrieved from the client cache rather than from the server, and if not, the web page is retrieved from the server.

A method of client-side caching in a browser, comprising:

• presenting a user selection for a web page at a URL;
• and
• receiving a server response including a cache control object and a client-side script, wherein the cache control object represents the most recent version of the web page, and wherein the client-side script appends the cache control object value to the URL generating a rewritten URL and causes the browser to automatically re-request the web page with the rewritten URL so that if the most recent version of the web page is in the browser cache, the web page is retrieved from the browser cache, and if not, the web page is retrieved from the server.

A method performed in a server to implement client-side caching, comprising:

• receiving a request from a web browser with a cache based on a user selection for a web page located at a URL on the server;
• and
• sending a response including a cache control object and a client-side script to the web browser, wherein the cache control object value represents the last version of the web page, and wherein the client-side script appends the cache control object value to the URL of the requested web page to form a rewritten URL and causes the web browser to automatically re-request the web page using the rewritten URL so that if the last version of the web page is in the web browser cache, the web page is retrieved from the web browser cache rather than from the server, and if not, the web page is retrieved from the server.