Abstract: Embodiments are disclosed for improving failure recovery in a distributed system during execution of a processing chain. In the context of a method, an example embodiment includes implementing, by the distributed system, a task coordination state machine corresponding to the processing chain. This example embodiment of the method further includes discovering, using the task coordination state machine, an error occurring during execution of the processing chain. Finally, the example embodiment of the method further includes reporting the error by a failure report generator service and recovering, by a failure recovery service, from the error. Corresponding apparatuses and computer program products are also provided.

Abstract: A fault-tolerant retry subsystem, method and computer program product are provided in order to automatically retry to deliver a message. In the context of a fault-tolerant retry subsystem, processing circuitry is provided to receive notification that delivery of a message to a subscriber has failed. The processing circuitry also defines a time interval at which delivery of the message is to be retried. The message is to be subjected to a plurality of retry attempts in an instance in which the delivery of the message to the subscriber continues to fail. The time interval is defined in a manner that depends upon which of the plurality of retry attempts is to be performed. As such, the time interval varies between at least some of the retry attempts. The processing circuitry causes the delivery of the message to be retried following expiration the time interval.

Abstract: Embodiments are disclosed for improving failure recovery in a distributed system during execution of a processing chain. In the context of a method, an example embodiment includes implementing, by the distributed system, a task coordination state machine corresponding to the processing chain. This example embodiment of the method further includes discovering, using the task coordination state machine, an error occurring during execution of the processing chain. Finally, the example embodiment of the method further includes reporting the error by a failure report generator service and recovering, by a failure recovery service, from the error. Corresponding apparatuses and computer program products are also provided.

Abstract: Embodiments are disclosed for improving throughput in a distributed transaction processing system. In the context of a method, an example embodiment includes receiving information regarding a change in state of a particular transaction recorded by the distributed transaction processing system. This example embodiment of the method further includes updating, by state machine query circuitry of a networked device within the distributed transaction processing system and based on the received information, a state of a primary state machine associated with the particular transaction. Finally, the example embodiment of the method further includes updating, by state machine query circuitry of a networked device within the distributed transaction processing system and based on the received information, a state of a primary state machine associated with the particular transaction. Corresponding apparatuses and computer program products are also provided.

Abstract: A fault-tolerant retry subsystem, method and computer program product are provided in order to automatically retry to deliver a message. In the context of a fault-tolerant retry subsystem, processing circuitry is provided to receive notification that delivery of a message to a subscriber has failed. The processing circuitry also defines a time interval at which delivery of the message is to be retried. The message is to be subjected to a plurality of retry attempts in an instance in which the delivery of the message to the subscriber continues to fail. The time interval is defined in a manner that depends upon which of the plurality of retry attempts is to be performed. As such, the time interval varies between at least some of the retry attempts. The processing circuitry causes the delivery of the message to be retried following expiration the time interval.