Mitchell G Morris

US Patent:

7945819, May 17, 2011

Filed:

Nov 3, 2008

Appl. No.:

12/263878

Inventors:

Gueorgui Chkodrov - Redmond WA, US
Richard D. Hill - Kirkland WA, US
Craig A. Critchley - Fall City WA, US
Krishnan Srinivasan - AndraPradesh, IN
Tihomir Tarnavski - Redmond WA, US
Mitchell G. Morris - Sammamish WA, US
Pramod Gurunath - Redmond WA, US

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

G06F 11/00

US Classification:

714 49, 714 18, 714 50, 714 51

Abstract:

The present invention extends to methods, systems, and computer program products for maintaining message state at a message log. Messages are accumulated at a message log in accordance with a message retention policy. Any of a variety of message capture assurances can be used when capturing a message from a message producer within a message log. A message becomes visible to message consumers after the outcome of writing the message is known (either failure or success). Messages are requested using (e. g. , monotonically increasing) sequence numbers. Messages are also dropped from the message log in accordance with the message retention policy.

US Patent:

8200836, Jun 12, 2012

Filed:

Sep 29, 2008

Appl. No.:

12/240568

Inventors:

Gueorgui Chkodrov - Redmond WA, US
Richard D. Hill - Kirkland WA, US
Craig A. Critchley - Fall City WA, US
Krishnan Srinivasan - AndraPradesh, IN
Tihomir Tarnavski - Redmond WA, US
Mitchell G. Morris - Sammamish WA, US
Pramod Gurunath - Redmond WA, US

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

G06F 15/16
G06F 15/167
G06F 15/177
G06F 15/173
G06F 3/00
G06F 9/44
G06F 9/46
G06F 13/00

US Classification:

709230, 719313, 719314, 719318

Abstract:

The present invention extends to methods, systems, and computer program products for durable exactly once message delivery at scale. A message capture system uses a synchronous capture channel and transactions to provide durable exactly once message capture. Messages are sent from the message capture system to a message delivery system over a network using an at least once transfer protocol. The message delivery system implements a durable at most once messaging behavior, the combination of which results in durable exactly once transfer of messages from the message capture system to the message delivery system. The message delivery system uses a synchronous delivery channel and transactions to provide durable exactly once message delivery. Cursors maintaining message consumer state are collocated with message consumers, freeing up message log resources to process increased volumes of messages, such as, for example, in a queued or pub/sub environment.

US Patent:

8214847, Jul 3, 2012

Filed:

Jun 27, 2008

Appl. No.:

12/163572

Inventors:

Gueorgui Chkodrov - Redmond WA, US
Richard D. Hill - Kirkland WA, US
Craig A. Critchley - Fall City WA, US
Krishnan Srinivasan - AndraPradesh, IN
Tihomir Tarnavski - Redmond WA, US
Mitchell G. Morris - Sammamish WA, US
Pramod Gurunath - Redmond WA, US

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

G06F 13/00
G06F 15/16
G01R 31/08

US Classification:

719314, 709230, 709231, 709232, 370229

Abstract:

The present invention extends to methods, systems, and computer program products for configuring assurances within distributed messaging systems. A defined set of message log and cursor components are configurably activatable and deactivatable to compose a variety of different capture assurances, transfer assurances, and delivery assurances within a distributed messaging system. A composition of a capture assurance, a transfer assurance, and a delivery assurance can provide an end-to-end assurance for a messaging system. End-to-end assurances can include one of best effort, at-most-once, at-least-once, and exactly once and can include one of: durable or non-durable. Using a defined set of activatable and deactivatable message log and cursor components facilities more efficient transitions between desired assurances. In some embodiments, a composition of a capture assurance, a transfer assurance, and a delivery assurance provides durable exactly-once message delivery.

US Patent:

20090132671, May 21, 2009

Filed:

Nov 3, 2008

Appl. No.:

12/263891

Inventors:

Gueorgui Chkodrov - Redmond WA, US
Richard D. Hill - Kirkland WA, US
Craig A. Critchley - Fall City WA, US
Krishnan Srinivasan - AndraPradesh, IN
Tihomir Tarnavski - Redmond WA, US
Mitchell G. Morris - Sammamish WA, US
Pramod Gurunath - Redmond WA, US

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

G06F 15/16
G06F 17/30

US Classification:

709206, 707205, 707E17001

Abstract:

The present invention extends to methods, systems, and computer program products for maintaining message state at a cursor. A message consumer requests messages from a cursor. The cursor can maintain state information for the message consumers separately from a message log that stores messages. Any of a variety of message delivery assurances can be used when delivering a message to a message consumer.