I'm developing a website with the microservice architecture, and each of the service owns a database. The database stores the data which the microservice needs.
Video services need the user information, so both of the services subscribed to the
NEW_USER_EVENT will be triggered when there's a new user registered.
Once the services received the
NEW_USER_EVENT, they put the incoming user information to each of their own database. So they can do things without asking the
So far so good. But here comes the question:
- What if I'm going to create a new service? How do I get the registered user informations and put them in the new service?
Maybe I can get the informations from the existing services. But the events are pushed by the messaging queue (
If I'm going to copy the data from one of the microservices, how do I make sure which service has the latest user informations? (Because some services haven't received the latest event)