Systems and methods for data synchronization and failover management

A method for enabling failover for a software application, the method comprising:

• monitoring by a processor-based controller simultaneous executions of:
• (i) a primary instance of the application, the primary instance being associated with a first value of an instance characteristic, and producing a desired sequence of results, and (ii) a first secondary instance of the application, the first secondary instance being associated with a different, second value of the instance characteristic, and producing the same desired sequence of results;
• detecting a failure of the primary instance prior to production of k results of the desired sequence of results, k being greater than or equal to one;
• determining that the first secondary instance has computed operations required to compute the k-th result;
• and
• labelling the first secondary instance as the primary instance.

A system for executing a software application expeditiously using at least one computer processor, the system comprising:

• a first processor;
• and
• a first memory in electrical communication with the first processor, the first memory comprising instructions which, when executed by a processing unit comprising at least one of the first processor and a second processor, program the processing unit to:
• for a software application, a first execution of which produces a first set of application results, initiate simultaneous execution of a plurality of instances of the application, wherein:
• each one of the plurality of instances is associated with a respective instance characteristic;
• and
• a respective first execution of each one of the plurality of instances produces a respective first instance-result-set that is same as the first set of application results;
• monitor a respective instance-result-set generated by each instance;
• and
• label the instance that was earliest in producing the instance-result-set thereof as a primary instance and labelling at least one other instance as a secondary instance, wherein using subsequent instance-result-sets from the primary instance speeds up computing performance of the application.

A system for enabling failover for a software application, the system comprising:

• a first processor;
• and
• a first memory in electrical communication with the first processor, the first memory comprising instructions which, when executed by a processing unit comprising at least one of the first processor and a second processor, program the processing unit to operate as a controller configured to:
• monitor simultaneous executions of:
• (i) a primary instance of the application, the primary instance being associated with a first value of an instance characteristic, and producing a desired sequence of results, and (ii) a first secondary instance of the application, the first secondary instance being associated with a different, second value of the instance characteristic, and producing the same desired sequence of results;
• detect a failure of the primary instance prior to production of k results of the desired sequence of results, k being greater than or equal to one;
• determine that the first secondary instance has computed operations required to compute the k-th result;
• and
• label the first secondary instance as the primary instance.