API-001: State store API design

Status

Accepted

Context

We reviewed storage API design for completeness and consistency.

Decisions

• All requests/responses use a single parameter that represents the request/response object. This allows us to extend/update request/response object without changing the API.
• Add Delete() method
• Support bulk operations: BulkDelete() and BulkSet(). All operations in the bulk are expected to be completed within a single transaction scope.
• Support a generic BulkOperation() method, which is carried out as a single transaction.
• Transaction across multiple API requests is postponed to future versions.
• Actor state operations are moved to a new Actor interface. Please see API-002-actor-api-design.

Consequences

With these changes we should meet stateful actor requirements.