EF Core defaults to last-write-wins behavior, which can silently overwrite concurrent updates without any warning. Two explicit strategies exist to handle this: optimistic concurrency uses a RowVersion column to detect conflicts at save time and throw a DbUpdateConcurrencyException, while pessimistic concurrency uses database
Table of contents
Designing Intentional Conflict Handling in .NET ApplicationsThe Default: Silent OverwritesOptimistic Concurrency: Detect and RespondPessimistic Concurrency: Coordinate Up FrontChoosing DeliberatelySort: