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Michael Spiegel edited this page Jun 4, 2024 · 17 revisions
  1. Should Entity properties be nullable? done
  2. Where should the MemberLimitExceededEvent be created? Is it necessary to have a event like this as it does not affect the state of the object? not needed
  3. We have a general Update endpoint for tennis club. How should we implement this as we did only plan to have a TennisClubSubscriptionTierChangedEvent. Should we split updating the name and the subscription tier?
  4. When a Member is created we create a MemberCreatedEvent and save it in the database. How do we add the MemberId to the MemberIds List in the Tennis Club? keep it as we have it now~
  5. Do need custom exceptions to be in the Application layer or can we also define exceptions in the domain layer?
  6. Should a ReadModel only use simple datatypes or is ok if we use ValueObjects in the ReadModel?

DeleteTennisClub? locked/unlocked/deleted in status

Events auf Redis publishen -> von Redis lesen -> Read Model aufbauen -> Sicherstellen dass es gepublished wurde. Process wird immer aufgerufen und es entscheidet dann ob es ein Event zurück gibt oder nicht.

Sending Email If the redisreader gets an event that triggers it to send an email do we have to check if the email was already sent because the event could arrive more than one times? Can we just save the ID of the events we already processed in the readside?

what happens if another service listens to our member events and builds a readside with all of the members. Now their database gets corrupted, they don't have any way of replaying the events. Is there a way to solve this or do they just have to backup the database? Or should they also save the events in a DB? Or would we just implement an endpoint that provides all events so they can replay them and generate the database, what if there's any external things that happen when an event is processed like sending an email? How do we ensure the email isn't sent again?

Do we need to secure the microservices with jwt or just the api gateway because the services are only internally reachable.

How can we solve our issues with event order?

Check database optimistic locking implementation

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