Consistent schema-less scalable storage system for orders

A method for managing transactions of an online marketplace, comprising:

• accessing, by an application server, a database that includes a first data object and a second data object, the first data object including at least one attribute that is compatible with a first version of a software application and incompatible with a second version of the software application, the second data object including a plurality of attributes that are compatible with the first version and the second version of the software application, the accessing being based at least in part on whether a request indicates the at least one attribute that is incompatible with the second version of the software application;
• providing, by the application server to a first client device and a second client device, a data object that is either the first data object or the second data object accessed from the database, the data object comprising one or more order attributes associated with an order placed via the online marketplace;
• receiving, from the first client device, a first modification of the one or more order attributes of the data object;
• storing, using the one or more servers, the first modification of the one or more order attributes of the data object in the database;
• receiving, from the second client device, a second modification of the one or more order attributes of the data object, wherein the second modification is received subsequent to storing the first modification;
• and
• discarding the second modification based at least in part on storing the first modification and based at least in part on the second modification being received subsequent to storing the first modification.

A non-transitory computer-readable medium storing instructions which, when executed by a processor, cause a system for managing transactions of an online marketplace to perform operations comprising:

• accessing, by an application server, a database that includes a first data object and a second data object, the first data object including at least one attribute that is compatible with a first version of a software application and incompatible with a second version of the software application, the second data object including a plurality of attributes that are compatible with the first version and the second version of the software application, the accessing being based at least in part on whether a request indicates the at least one attribute that is incompatible with the second version of the software application;
• providing, by the application server to a first client device and a second client device, a data object that is either the first data object or the second data object accessed from the database, the data object comprising one or more order attributes associated with an order placed via the online marketplace;
• receiving, from the first client device, a first modification of the one or more order attributes of the data object;
• storing the first modification of the one or more order attributes of the data object in the database;
• receiving, from the second client device, a second modification of the one or more order attributes of the data object, wherein the second modification is received subsequent to storing the first modification;
• and
• discarding the second modification based at least in part on storing the first modification and based at least in part on the second modification being received subsequent to storing the first modification.