Clustered client failover

A system for facilitating client failover in a clustered environment, the system comprising:

• at least one server comprising:
• at least one processor configured to execute a first set of computer executable instructions;
• at least one computer readable storage media storing the first set of computer executable instructions, wherein the first set of computer executable instructions, when executed by the at least one processor comprise instructions for:
• receiving a first request to access a resource from a first client in a client cluster, wherein the first client sends the first request on behalf of a process;
• associating a first application instance identifier with the first resource;
• allowing the process access to the resource;
• receiving a second request for the resource from a second client in the client cluster on behalf of the process after loss of connection with the first client, wherein the second client is different from the first client;
• receiving a second application instance identifier associated with the second request;
• determining that the first and second application instance identifiers are the same;
• and
• invalidating the first request, wherein invalidating the first request comprises:
• determining that the resource is not located on the first node that receives the second request;
• sending a request to a second node to invalidate the resource;
• and
• granting the second request to access the resource on the first node.

A computer readable storage media, wherein computer storage media is not a signal, storing computer executable instructions that, when executed by a processor, comprise instructions for:

• receiving a first request to access a resource from a first client in a client cluster, wherein the first client sends the first request on behalf of a process;
• associating a first application instance identifier with the first resource;
• allowing the process access to the resource;
• receiving a second request for the resource from a second client in the client cluster on behalf of the process after loss of connection with the first client, wherein the second client is different from the first client;
• receiving a second application instance identifier associated with the second request;
• determining that the first and second application instance identifiers are the same;
• and
• invalidating the first request, wherein invalidating the first request comprises:
• determining that the resource is not located on the first node that receives the second request;
• sending a request to a second node to invalidate the resource;
• and
• granting the second request to access the resource on the first node.