A repository showing how to handle concurrent conflicts using EntityFramework Core and DDD Aggregates

An implementation of Optimistic Concurrency Control Algorithms - FOCC and BOCC (Forward and Backward), according to the book Transactional Information Systems (Vossen)

A thread-safe in-memory key-value store with optimistic concurrency support.

Entity Framework Core Concurrency Control Demo

High-performance EntityFrameworkCore.Sqlite extension for concurrent reads and writes. Fix EFCore SQLite "database is locked" and "busy" errors with 10x faster bulk inserts and parallel read scaling. The definitive thread-safe solution for SQLite performance and concurrency in dotnet

A comprehensive full-stack CRUD application showcasing modern client-server architecture with search, sorting, pagination, optimistic concurrency, bulk operations, and real-time statistics built in vanilla JavaScript and Node.js.

A lock-free software-only runtime system for C++ that eliminates concurrency errors for fork-join parallel programs

Shared versioned state for multi-agent AI workflows. An MCP server.

A highly scalable RESTful Airline Ticketing API built with .NET 8. Features a custom Ocelot API Gateway, B2B Agency ticketing model, Optimistic Concurrency Control, and full Microsoft Azure cloud deployment.

A .NET 10 demo for exploring optimistic and pessimistic database concurrency patterns with Entity Framework Core, SQL Server, and Minimal APIs.

Optimistic concurrency control in EF Core with PostgreSQL via Npgsql. Companion ASP.NET Core 10 demo for the blog post: base Entity class, SaveChangesInterceptor, load helper, retry wrapper, and HTTP 409 mapping.

Bank API with concurrency check on Bank Balance with ASP.NET Core and Entity Framework Core

Collaborative market research reports backend: report sharing, section-level optimistic concurrency (ETag/If-Match), append-only audit log with revert, and LLM-gateway section rewrite. FastAPI + async SQLAlchemy + Alembic + PostgreSQL.

A PDEVS C++ parallel simulator. supporting multiple synchronization paradigms

Production-ready collaborative wiki backend with MongoDB, OCC, JWT auth, full-text search, and schema migrations

Compile-time optimistic concurrency for EF Core — [Optimistic] generates RowVersion, SaveChangesClientWinsAsync and SaveChangesDatabaseWinsAsync handle conflicts

ASP.NET Core incident management API demonstrating Clean Architecture, domain state transitions, JWT-secured commands, ETags, and optimistic concurrency.

Community library lending backend built with .NET 10, CQRS, MySQL, MongoDB, optimistic concurrency, and a transactional outbox.

E-Tag Example - Shallow

A live play-money market where every World Cup footballer is a tradeable stock — one globally-consistent market on Aurora DSQL, settled exactly-once through the goal-moment write spike. AWS × Vercel H0.