Abstract: Systems, methods, and computer-readable media are described for implementing an active-active transaction protocol according to which multiple sites can each provide active services such as executing update transactions that insert, modify, or delete data records. An active-active transaction protocol utilizes affinity records corresponding to both transactions that have been received as well as the data records those transactions are updating to determine which site should handle execution of an incoming update transaction. An affinity record defines a relationship between a data record and a site that determines whether and where a transaction seeking to update that data record will be routed for processing. Conflict handling mechanisms are also provided by the active-active transaction protocol to ensure data consistency between the multiple sites.

Abstract: A computing system includes a first storage unit at a first computing site. The first storage unit stores units of work data and data synchronously replicated from a first server cluster of a second computing site. The system further includes a second server cluster at the first computing site, the second server cluster is a proxy node of the first server cluster. The system further includes a second storage unit at the first computing site, the second storage unit stores the units of work data and data from the first storage unit asynchronously into the second storage unit. The system further includes a third server cluster at the first computing site, the third server cluster processes the units of work data asynchronously replicated into the second storage unit.

Abstract: Systems, methods, and computer-readable media are described for implementing an active-active transaction protocol according to which multiple sites can each provide active services such as executing update transactions that insert, modify, or delete data records. An active-active transaction protocol utilizes affinity records corresponding to both transactions that have been received as well as the data records those transactions are updating to determine which site should handle execution of an incoming update transaction. An affinity record defines a relationship between a data record and a site that determines whether and where a transaction seeking to update that data record will be routed for processing. Conflict handling mechanisms are also provided by the active-active transaction protocol to ensure data consistency between the multiple sites.

Abstract: According to one or more embodiments of the technical solutions described herein, a computing system includes a first storage unit at a first computing site. The first storage unit stores units of work data and data synchronously replicated from a first server cluster of a second computing site. The computing system further includes a second server cluster at the first computing site, the second server cluster is a proxy node of the first server cluster. The computing system further includes a second storage unit at the first computing site, the second storage unit stores the units of work data and data from the first storage unit asynchronously into the second storage unit. The computing system further includes a third server cluster at the first computing site, the third server cluster processes the units of work data asynchronously replicated into the second storage unit.