Model: Data ownership (in microservice architecture)

the owner is the one who writes to the table

(1) Pattern: Single Ownership

(2) Pattern: Common Ownership

• solution: create a service around the shared table

(3) Pattern: Joint Ownership

• solution 1: table split pattern

• solution 2: data domain

• solution 3: delegation

(1) Pattern: Single ownership (data ownership in microservices)

(2) Pattern: Common Ownership (data ownership in microservices)

solution: create a service around the shared table

eg. create a service "Audit Service"

(3) Pattern: Joint Ownership (data ownership in microservices)

Solution 1: table split pattern

catalog needs to update inventory

synchronous vs asynchronous communication

Solution 2: data domain

-> bounded context now contains 2 services

Solution 3: delegation