Abstract: A system can receive EV data of an EV operated by a driver, where the EV data comprises at least one of a current electric charge of the EV or a current range of the EV. The system can further receive service requests from requesting users, where a subset of the service requests correspond to one or more item pickup locations within a predetermined distance or estimated time of travel of an EV charging station. Based at least in part on the EV data, the system (i) assigns the driver to the subset of service requests, and (ii) determines a route from a location of the EV to the EV charging station, and transmits information corresponding to the subset of service requests and data corresponding to the route to at least one of a computing device operated by the driver or a computing system associated with the EV.

Abstract: A network system is configured to model various aspects of fulfilling service requests using hierarchical statechart objects. The statechart objects can be instantiated and/or transitioned to different states in response to user requests and/or detected service events. Furthermore, the statechart objects can be dynamically linked such that state transitions of one statechart object can trigger the state(s) of one or more other linked statechart objects to be transitioned. A transaction coordinator is configured to identify a set of related state transitions and determine whether each of the set of related state transitions has been successfully completed. In response to determining that each of the set of related state transitions has been successfully completed, the transaction coordinator can cause data entries to be written to a database.

Abstract: Various aspects of a requested transport or delivery service can be modelled and computationally represented using different classes of statechart objects. Some of the statechart objects can be transitioned between one or more composite states each having a plurality of substates. In this manner, delays, errors, and failures relating to the transport or delivery service can be tracked using state transitions of the statechart objects. And dynamic recovery functions to such delays, errors, and failures can be performed in response.