Optimistic lock implementation for Django. Prevents users from doing concurrent editing.

Lockgate is a cross-platform distributed locking library for Go. Supports distributed locks backed by Kubernetes or HTTP lock server. Supports conventional OS file locks.

Spring Data JPA, Spring Data JDBC, and Spring Data R2DBC examples and a comprehensive guide to JPA fetching and locking strategies.

轻度扩展mybatis-generator-core插件，与官方插件兼容。

Adaptive Radix Tree in C++

Laravel Database Queue with Optimistic locking

Sample reactive application using Angular, Spring Boot, Spring Webflux, Spring Data R2DBC and PostgreSQL. It also demonstrates the notification feature of PostgreSQL (listen/notify)

Prevents update conflicts in Laravel

Optimistic queue-based reader-writer lock for robust index synchronization (SIGMOD 2024)

A basic hotel reservation system with 2PC using pessimistic and optimistic locks in Go

This is an optimistic lock plugin based on GORM.

distributed and local lock provider

Production-grade cryptocurrency trading engine simulator with event-driven architecture, atomic balance updates, and thread-safe order matching. Built with Spring Boot 3.3+, Kafka, PostgreSQL, and Docker. Perfect for showcasing backend engineering skills!

Enterprise-grade Order Processing System built with Spring Boot and React. Features high-concurrency handling via Optimistic Locking, event-driven architecture with RabbitMQ, and secure JWT authentication.

Stock Management Application

Meetups microservice, applying tactical DDD building blocks and in a real example.

In this repo I would like to show 4 strategies of concurrency control for writing data using Python SQLAlchemy ORM and PostgresSQL (however this examples could be easily transformed to plain SQL).

Sample reactive application using Angular, Spring Boot, Spring Webflux and MongoDB. It also demonstrates the Change Streams feature of MongoDB.

Domain layer for a double-entry bookkeeping system. Implements ledger event recording with constructor-level validation, account balance management with optimistic locking, a payout state machine with guarded transitions and lifecycle timestamps, and batch lock infrastructure with fencing tokens for distributed write coordination