Method, system, and computer program product for maintaining data centers

A system, comprising:

• one or more processors of a node of a plurality of nodes, wherein the one or more processors are programmed and/or configured to:
• receive, from a client of a plurality of clients, an update request associated with input data before the client performs a data entry associated with processing of the input data, wherein the plurality of nodes is divided across a plurality of data centers such that each data center of the plurality of data centers includes a subset of nodes of the plurality of nodes, wherein each subset of nodes includes a leader node elected by that subset of nodes, wherein the leader nodes include a super leader node elected by the leader nodes, wherein the node includes the leader node of one subset of nodes of a data center of the plurality of data centers, wherein each client of the plurality of clients is simultaneously executing a same service, and wherein the update request includes a request to perform the data entry associated with processing of the input data at the data center including the node;
• execute, the update request;
• communicate, to the client, an indication that the update request failed;
• receive, from the client, a result request for result data associated with processing of the input data until the result data associated with processing of the input data is communicated to the client, wherein the indication that the update request failed is due to another data center of the plurality of data centers different than the data center having already performed a data entry associated with previous processing of the same input data by another client of the plurality of clients different than the client;
• and
• communicate, to the client, the result data associated with processing of the input data.

A computer program product comprising at least one non-transitory computer-readable medium including program instructions that, when executed by at least one processor of a node of a plurality of nodes, cause the at least one processor to:

• receive, from a client of a plurality of clients, an update request associated with input data before the client performs a data entry associated with processing of the input data, wherein the plurality of nodes is divided across a plurality of data centers such that each data center of the plurality of data centers includes a subset of nodes of the plurality of nodes, wherein each subset of nodes includes a leader node elected by that subset of nodes, wherein the leader nodes include a super leader node elected by the leader nodes, wherein the node includes the leader node of one subset of nodes of a data center of the plurality of data centers, wherein each client of the plurality of clients is simultaneously executing a same service, and wherein the update request includes a request to perform the data entry associated with processing of the input data at the data center including the node;
• execute the update request;
• communicate, to the client, an indication that the update request failed, wherein the indication that the update request failed is due to another data center of the plurality of data centers different than the data center having already performed a data entry associated with previous processing of the same input data by another client of the plurality of clients different than the client;
• receive, from the client, a result request for result data associated with processing of the input data until the result data associated with processing of the input data is communicated to the client;
• and
• communicate, to the client, the result data associated with processing of the input data.