Outbox pattern

1. https://microservices.io/patterns/data/transactional-outbox.html
2. https://www.kamilgrzybek.com/blog/posts/the-outbox-pattern
3. https://event-driven.io/en/outbox_inbox_patterns_and_delivery_guarantees_explained/

MongoDb Change Streams

1. https://www.mongodb.com/docs/manual/changeStreams/
2. https://www.mongodb.com/docs/manual/core/replica-set-oplog/
3. https://dba.stackexchange.com/questions/326287/mongodb-oplog-entry-removal-process#:~:text=When does old%2Ffirst oplog entry in the mongo,oplog reaches the maximum size [ 1 ].