Hello. I have a single node running couchDB 3 deployed live. I have a DB-per-user setup with about 2k databases on a single node. A single Spring-boot API talks to couchDB vis HAProxy ...
1) I would like to have multiple 2 to 3 nodes in the same DC so that in case one node goes down, the system is still operational. Each node will have an instance of the Spring-boot API, ... I am not sure whether I should be looking into clustering or replication. I do understand that with replication, the nodes can be in different DB. At this point, the plan is a single DC only. In the future, I may look into a cross DC setup. Any hint will me most appreciated. 2) I use the couchDB change feed to update some internal systems and send notification emails. Each change feed needs to be processed exactly once. The change feed seems to be a major point of failure for my setup ...( I also noticed that if couchDB is restarted, I need to restart the spring-boot app, otherwise, it does not process the feed). Given that I am planning to move to a multiple nodes setup, I am not very sure how I would be able to process each feed only once without having to manually handle duplicate. Any experience or hint or alternative would be most appreciated. Thank you very much. Best regards. A.
