When Did This Transaction Happen? PostgreSQL Snapshots, LSNs, Oracle SCNs, and More
When did a database change happen? This isn't just academic. Incremental replication must order committed changes and resume exactly without locking…
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Your @EventListener Fires Before the Transaction Commits⚙️
Your domain event fires. Your notification service queries the DB for the entity that just got saved. It finds nothing. You add a log line. It start…
What Happens When a Database Operation Fails Midway? NestJS Transactions to the Rescue
Imagine a simple money transfer scenario. John sends money to his friend Sarah. The system successfully deducts money from John's account, but befor…