Adaptive recovery from system failure for application instances that govern message transactions

A computer program product for use in a computing system that includes one or more processors, persistent memory configured to store information that persists through power loss of the computing system, and system memory that may more directly accessed by the one or more processors, a computer program product for implementing a method for recovering from a system failure, the computer program product comprising one or more recordable-type computer-readable storage media having thereon computer-executable instructions that, when executing by the one or more processors, cause the computing system to perform the following:

• an act of maintaining state information for each of multiple message transactions, each state information having recovery mode information indicating whether or not the corresponding processing instance is in recovery mode or normal mode;
• an act of detecting receipt of a message corresponding to a particular message transaction that follows a message exchange pattern;
• an act of loading state information corresponding to the particular message transaction from persistent memory in response to having received the message;
• an act of determining from the state information whether or not the processing instance associated with the particular message transaction is in recovery mode;
• and
• an act of branching process flow for the processing instance associated with the particular message transaction depending on whether or not the processing instance is in recovery mode.

In a computing system that includes one or more processors, persistent memory configured to store information that persists through power loss of the computing system, and system memory that may more directly accessed by the one or more processors, a method for recovering from a system failure, the method comprising the following:

• an act of maintaining state information for each of multiple message transactions, each state information having recovery mode information indicating whether or not the corresponding processing instance is in recovery mode or normal mode;
• an act of detecting receipt of a message corresponding to a particular message transaction pattern that follows a message exchange pattern;
• and
• a step for identifying an operational mode of a particular processing instance corresponding to the particular message transaction.