The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 20, 2013
Filed:
Mar. 10, 2010
Jonathan M. Cole, Woodinville, WA (US);
Tomasz Janczuk, Redmond, WA (US);
Nicholas A. Allen, Redmond, WA (US);
Yavor Georgiev, Seattle, WA (US);
Jonathan M. Cole, Woodinville, WA (US);
Tomasz Janczuk, Redmond, WA (US);
Nicholas A. Allen, Redmond, WA (US);
Yavor Georgiev, Seattle, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
The present invention extends to methods, systems, and computer program products for routing requests for duplex applications. Embodiments of the invention provide a multi-machine scalability mechanism for duplex messages patterns based on a polling mechanism. Client requests and polls can be distributed to service instances running within a cluster of machines by a session-unaware load balancer. Messages to and from a given client can be accessed by any service instance in the cluster service instance, which allows capacity scale-out and seamless failover between service instances. A coordinated inbound message store is used to affinitize application requests to a particular service instance. A coordinated outbound message store is used to route application responses from the machine running the application to the machine where a polling request arrived. Further, the lifetime of the service instance is decoupled from the inbound or outbound message stores, allowing the client-server conversation to potentially span many instances of the service.