Systems and methods for enabling a highly available managed failover service

A method of managing failovers for an application partitioned across a plurality of zones of a network-based system, wherein each zone of the plurality of zones comprises a primary node and at least one secondary node, wherein the plurality of zones are in communication via a communication network, and wherein each node is set to one of a number of mutually exclusive states comprising an active state, in which the node processes read and write requests, a passive state, in which the node does not process read or write requests, and a fenced state, in which the node processes read requests but does not process write request, the method comprising:

• identifying that the primary node changes state from the active state, wherein the primary node changing state from the active state triggers a failover;
• and
• performing one or more actions of a failover workflow when the failover is triggered, the one or more actions comprising:
• transitioning a first of the at least one secondary node from the passive state to the active state based on the failover workflow,
• storing a current state value of the first of the at least one secondary node as the active state in storages of a subset of the plurality of zones;
• and
• routing read traffic and write traffic to the first of the at least one secondary node transitioned to the active state.

A method of managing a failover for an application partitioned across a plurality of zones of a network-based system, the method comprising:

• receiving, via an interface, configuration information for the application, the configuration information comprising:
• identifiers for each of a plurality of cells of the application distributed across the plurality of zones, the plurality of cells including at least a primary cell and a secondary cell,
• a defined state for each of the plurality of cells,
• one or more dependencies for the application, and
• a failover workflow defining actions to take in a failover event based on the defined state for each cell and the one or more dependencies;
• receiving an indication of a change in state of the primary cell or a request to initiate the failover event;
• updating the states for corresponding cells of the plurality of cells based on the fail over workflow;
• and
• updating the one or more dependencies for the application based on the failover workflow.