Which one should I pick for a new project?

I need more context to give you a meaningful answer. baomidou/dynamic-datasource and xuxueli/xxl-job solve fundamentally different problems—they're not alternatives to each other:

baomidou/dynamic-datasource [baomidou/dynamic-datasource README]:

• A Spring Boot multi-datasource toolkit for managing multiple database connections
• Handles datasource routing, read-write splitting, group management, and dynamic datasource switching
• Use this if you need to work with multiple databases and switch between them at runtime

xuxueli/xxl-job [xuxueli/xxl-job README]:

• A distributed task scheduling framework for job execution
• Handles cron-based scheduling, task distribution, and execution routing across multiple executor nodes
• Use this if you need scheduled background jobs or distributed task execution

Decision framework:

• Need multiple databases? → dynamic-datasource
• Need scheduled/async job execution? → xxl-job
• Need both? You can use them together (e.g., your scheduled job uses dynamic-datasource to query different databases)

Could you clarify what your new project needs to do? That will help me give a specific recommendation.

FOLLOW_UPS:

• Does your project require multiple database connections?
• Do you need distributed task scheduling or cron jobs?
• Are you building an application, job scheduler, or both?