Open-source alternatives to Dynamic Datasource

FreeSql is a .NET object-relational mapper and data access layer that translates object-oriented code into SQL for multiple relational database providers. It functions as a fluent SQL query builder and database schema synchronizer, allowing developers to align database table and index structures with entity class definitions. The framework is specifically optimized for .NET Native AOT to ensure reduced memory footprints and faster startup times. It includes a database traffic manager to distribute load through read-write splitting, dynamic table sharding, and tenant-based data isolation. Bro

This project is a comprehensive reference collection of practical implementation examples and patterns for building applications with Spring Boot. It serves as a Java web application template and a showcase for developing functional web services featuring REST endpoints, template engines, and global exception handling. The repository distinguishes itself by providing detailed demonstrations of enterprise-grade features, including distributed locking, task scheduling, and asynchronous message exchange using brokers like RabbitMQ. It also includes reference implementations for automated API doc

Jeesite is a full-stack low-code development framework designed for building enterprise administrative portals using Spring Boot, MyBatis, and Vue. It functions as a comprehensive platform for creating administrative dashboards with integrated role-based access control and organizational data permission systems. The framework distinguishes itself through a combination of automated CRUD code generation and an integrated RAG platform that connects large language models to enterprise data via vector stores. It further incorporates a BPMN-based workflow engine to automate complex business process

Quarkus is a Kubernetes-native Java framework designed for building high-performance, memory-efficient applications. It utilizes ahead-of-time native compilation to transform Java code into standalone, optimized binaries that eliminate the need for a virtual machine, enabling rapid startup and reduced memory consumption. By performing code augmentation during the build phase, it shifts heavy processing tasks away from runtime, ensuring that applications are optimized for cloud-native environments. The framework distinguishes itself through a unified approach to reactive and imperative program

This project is a reference implementation providing a collection of practical examples for data access patterns and repository abstractions within the Spring Data ecosystem. It serves as a comprehensive showcase for implementing consistent data layers across various relational and non-relational databases. The repository specifically demonstrates multi-store persistence by integrating relational, document, and vector databases within a single application. It includes implementations for vector search to manage high-dimensional embeddings and similarity searches across different database tech

This project is a library that integrates the MyBatis persistence framework into Spring Boot applications. It provides a database persistence layer that connects Java mapper interfaces to SQL statements through automatic package scanning and dependency injection. The project utilizes Spring Boot auto-configuration to automatically register session factories and templates based on detected data sources. It includes support for GraalVM native images, enabling the compilation of applications into standalone binaries with specific configurations for XML-based mappers. Capabilities cover the mana

This repository is a curated collection of tutorials and source code examples for learning Spring Boot development, covering a range of practical project types. It provides hands-on materials for building complete applications, including a bulletin board forum system, a full-stack blog, and a large-scale e-commerce system, as well as projects that demonstrate a decoupled frontend and backend architecture. The collection focuses on guiding developers through real-world application construction, with step-by-step tutorials and source code studies for each project. It covers fundamental Spring B

Kingshard is a MySQL database proxy and sharding middleware that routes SQL traffic between clients and multiple database nodes. It functions as a load balancer, read-write splitter, and SQL query firewall to manage how data is accessed and distributed across a database infrastructure. The system implements data sharding using hash, range, or date strategies to split tables across multiple nodes. It enables read-write splitting by directing data modification requests to a master node while distributing read-only queries across a pool of slave replicas. The proxy provides traffic management t

Blog.Core is a production-ready backend boilerplate for building enterprise APIs and microservices using ASP.NET Core. It provides a foundational infrastructure for distributed systems, including tools for database-first scaffolding and the implementation of multi-tenant API frameworks. The project distinguishes itself through automated data layer generation, which produces entity models and repository layers directly from database schemas. It implements a centralized identity management system using standard identity server protocols to handle authentication and authorization across multiple

This project is a technical resource and pattern library for building enterprise applications with Python. It serves as a guide for implementing clean architecture, providing a framework for separating core business logic from infrastructure and external frameworks. The material focuses on Domain-Driven Design and the application of architectural patterns to maintain complex business requirements. It provides specific guidance on the Repository pattern for data abstraction, Command-Query Responsibility Segregation for optimizing read and write paths, and the use of dependency inversion to dec

This project is a technical interview course and study guide focused on senior-level Java engineering. It provides a curriculum centered on system design, high-concurrency engineering, and the construction of distributed systems. The resources include a distributed database strategy guide and a microservices architecture reference. These materials cover specific design patterns for message queues, distributed systems, and the implementation of reliable asynchronous communication. The content covers broad capability areas including search engine architecture, distributed cache optimization, a

Atlas is a MySQL database proxy and middleware system designed to manage traffic between clients and database clusters. It functions as a high-availability database gateway and sharding middleware, providing a fault-tolerant entry point for routing, load balancing, and managing database connections. The project differentiates itself through a combination of read-write splitting, which directs queries to primary or replica servers, and data sharding to distribute information across multiple backend instances. It utilizes a connection pooler to reduce the overhead of establishing new sessions a

Websockify is a WebSocket-to-TCP proxy and tunneling server that enables web browsers to communicate with servers or applications that only support standard TCP connections. It functions as a network bridge and connection broker, translating bidirectional WebSocket frames into raw TCP packets to facilitate remote browser access to backend services. The system acts as a secure socket gateway that supports multi-tenant socket routing, allowing multiple clients to be directed to different backend targets based on unique URL tokens or hostnames. It secures data in transit by wrapping connections

Citus is a PostgreSQL extension that transforms a standard database into a distributed system. It functions as a sharding framework and distributed SQL engine, enabling horizontal scaling by partitioning tables across a cluster of nodes. By utilizing a coordinator-worker topology, the system manages metadata and routes queries to the appropriate nodes, allowing for parallel execution of complex operations across distributed data shards. The platform distinguishes itself through its specialized support for multi-tenant architectures and real-time analytical processing. It enables tenant-based

This project is a comprehensive educational resource and technical guide for building enterprise backend applications and RESTful services using the Spring Boot framework. It serves as a step-by-step tutorial for developing server-side logic, API routing, and distributed systems within the Java ecosystem. The documentation provides specific implementation guides for microservices architecture, focusing on coordinating distributed services and event-driven communication. It includes a practical reference for the Spring ecosystem, with detailed sections on security implementation and data persi

tx-lcn is a distributed transaction framework and Java transaction middleware designed to manage atomic operations and data consistency across multiple microservices and relational databases. It functions as a distributed transaction coordinator that synchronizes commit and rollback operations to ensure global data integrity. The system provides a microservice consistency manager that tracks and resolves transaction flows across service boundaries. It features an integration layer compatible with middleware such as Spring Cloud, Dubbo, and Motan, allowing it to operate across different servic

dtm is a distributed transaction framework and polyglot transaction coordinator designed to maintain data consistency across microservices. It functions as a Saga orchestration engine and a two-phase message coordinator, ensuring that multi-service operations either succeed completely or roll back to a consistent state. The project distinguishes itself by supporting multiple consistency patterns, including Saga, TCC, XA, and outbox patterns, allowing users to select the appropriate model for their specific application requirements. It provides a polyglot integration layer via HTTP and gRPC, e

Hmily is a distributed transaction framework and data consistency manager designed to maintain state across multiple services. It operates as a coordinator that tracks transaction states across remote procedure calls to manage nested operations and ensure atomic completions. The project implements the SAGA pattern to orchestrate long-running business processes through a sequence of local transactions and automated compensating actions. It distinguishes itself by automating the generation and execution of rollback scripts for relational databases to recover from business exceptions and restore

Seata is a distributed transaction coordinator and consistency framework designed to maintain data integrity across multiple microservices. It functions as a manager that synchronizes state across separate databases to ensure atomic commits or rollbacks of global transactions. The project provides a toolkit for implementing distributed transaction patterns, using a two-phase commit protocol and centralized status tracking to prevent data anomalies. It orchestrates eventual consistency through state-machine-based tracking and message-driven coordination to handle timeouts and failures in distr

This project is a Java implementation of the try-confirm-cancel pattern, providing a distributed transaction framework and management library. It functions as a coordinator that manages the lifecycle of multi-phase transactions to ensure consistency across multiple distributed services. The framework includes a distributed transaction coordinator server that offloads event and task operations from local services. It also provides a dedicated dashboard for visualizing transaction status and manually operating distributed events and tasks. The system manages consistency through a three-phase c

Automatisch is an open-source, self-hosted automation platform designed to orchestrate multi-stage workflows across various third-party web services. It functions as a no-code integration engine that allows users to connect disparate applications, enabling the automated movement of data and the execution of tasks without manual intervention. By running the platform on private infrastructure, users maintain full control over their data and ensure compliance with internal security policies. The platform distinguishes itself through a focus on secure, local credential management and flexible int

mall4cloud is a multi-tenant B2B2C e-commerce platform built on a Spring Cloud microservice architecture. It orchestrates independently deployable services with service discovery, configuration, caching, messaging, distributed transactions, object storage, and full-text search to support a marketplace with separate interfaces for platform administrators, merchants, and customers. The platform distinguishes itself through its comprehensive microservice infrastructure, using RocketMQ for event-driven messaging, Seata for distributed transaction coordination across services, and Redis for cachin

LoopBack Next is a Node.js API framework used for building REST and multi-protocol APIs. It functions as an OpenAPI server implementation that can either generate machine-readable specifications from code or produce implementation controllers and models from existing specifications. The framework distinguishes itself through a central dependency injection container and a repository-pattern data access layer. This architecture decouples application logic from component construction and persistent storage, allowing for a pluggable system where data sources and business logic are isolated throug

This project is a reference implementation of a distributed system built using Spring Cloud Alibaba, Spring Boot, and JDK 17. It serves as a comprehensive model for implementing a microservices architecture. The system integrates a wide range of distributed patterns, including global transaction coordination for data consistency, OAuth2 and JWT for identity management, and Kubernetes-based container orchestration. It features a dedicated observability stack for distributed request tracing, log aggregation, and service health monitoring. The implementation covers several functional domains, i

Dockhand is a multi-host Docker manager and container management interface used to control the lifecycle of containers, images, volumes, and networks. It functions as a Docker Compose orchestrator and GitOps deployment tool, enabling the synchronization of application stacks directly from remote Git repositories. The project distinguishes itself as an enterprise Docker access controller, providing role-based access control and identity verification through OIDC, LDAP, and multi-factor authentication. It secures sensitive data using AES-256-GCM encryption for credentials at rest and handles na

FalkorDB is a high-performance graph database management system and vector graph database. It serves as a knowledge graph construction tool and a GraphRAG knowledge store, integrating structured property graphs with vector search to provide grounded context for large language models. The engine is designed as a multi-tenant graph engine, capable of hosting thousands of isolated datasets within a single instance. The system distinguishes itself by using linear algebra for query execution, treating relationship tensors as matrix multiplications to achieve low-latency multi-hop traversals. It ut

This project is a centralized identity and access management platform that functions as a single source of truth for user authentication. It enables organizations to manage user sessions and enforce security policies across multiple connected client applications through a unified service. The platform distinguishes itself by utilizing the Central Authentication Service protocol to facilitate secure identity exchange. It provides a dedicated management interface for registering client applications and defining specific access permissions, while also supporting integration with external social