Managing custom attributes for domain objects defined within microservices

A system comprising:

• a non-transitory computer-readable medium storing instructions;
• and
• a processing device communicatively coupled to the non-transitory computer-readable medium,
• wherein, the processing device is configured to execute the instructions and thereby perform operations comprising:
• receiving a custom attribute request for a domain object defined in a microservice, wherein the custom attribute request comprises a domain object identifier for the domain object and a custom attribute to add to the domain object;
• identifying, based on the domain object identifier, a custom value table for the domain object, wherein the custom value table:
• (1) is defined in a repository for the microservice,
• (2) comprises a plurality of placeholder fields, and
• (3) is configured to store values for custom attributes in the plurality of placeholder fields for instances of the domain object;
• identifying a placeholder field of the plurality of placeholder fields that is available based on the placeholder field not being mapped in a plurality of records found in an attribute schema table;
• and
• storing a record in the attribute schema table for the domain object and the custom attribute comprising mapping data, wherein the mapping data maps the custom attribute to the placeholder field of the plurality of placeholder fields for the custom value table.

A non-transitory computer-readable medium having program code that is stored thereon, the program code executable by one or more processing devices for performing operations comprising:

• receiving an insert request, wherein the insert request comprises an instance identifier for an instance of a domain object, a first value for a first custom attribute, and a second value for a second custom attribute;
• identifying, based on the instance identifier for the instance, a domain object identifier for the domain object;
• identifying, based on the domain object identifier and the first custom attribute, a first record stored in an attribute schema table, wherein the attribute schema table is defined in a repository for a microservice;
• identifying, based on the domain object identifier and the second custom attribute, a second record in the attribute schema table;
• identifying, based on first mapping data stored in the first record, a first placeholder field of a plurality of placeholder fields found in a custom value table, wherein the first placeholder field is assigned to the first custom attribute and the custom value table is defined for the domain object in the repository;
• identifying, based on second mapping data stored in the second record, a second placeholder field of the plurality of placeholder fields, wherein the second placeholder field is assigned to the second custom attribute;
• and
• storing, based on the instance identifier, the first value for the first custom attribute in the first placeholder field and the second value for the second custom attribute in the second placeholder field of an instance record found in the custom value table for the instance of the domain object.