There are 1 repository under optimistic-concurrency topic.
A repository showing how to handle concurrent conflicts using EntityFramework Core and DDD Aggregates
A thread-safe in-memory key-value store with optimistic concurrency support.
An implementation of Optimistic Concurrency Control Algorithms - FOCC and BOCC (Forward and Backward), according to the book Transactional Information Systems (Vossen)
Entity Framework Core Concurrency Control Demo
A lock-free software-only runtime system for C++ that eliminates concurrency errors for fork-join parallel programs
Bank API with concurrency check on Bank Balance with ASP.NET Core and Entity Framework Core
A PDEVS C++ parallel simulator. supporting multiple synchronization paradigms
E-Tag Example - Shallow