The "Server is busy, please try again later" error usually indicates that the server is currently unable to handle the request, possibly due to high load, resource exhaustion, or other performance issues. The way to solve this problem depends on your server environment and application, here are some suggestions:

　　1. Check server load:

　　Use system monitoring tools (such as top, htop, Task Manager, etc.) to check the load of the server. If the load is too high, you may need to optimize your code, add hardware resources, or consider load balancing.

　　2. Optimize database query:

　　If your application involves database operations, check the efficiency of database queries. Ensure that database indexes are created correctly and query statements are optimized to reduce the burden on the database.

　　3. Add hardware resources:

　　If the server hardware resources (CPU, memory, disk) are insufficient, consider adding hardware resources or upgrading to a server with a higher configuration.

　　4. Application optimization:

　　Check application performance to find potential performance bottlenecks. There may be a need to optimize code, improve algorithms or caching strategies.

　　5. Use cache:

　　Use caching to reduce server load. For frequently accessed data, consider using an in-memory cache or a distributed cache.

　　6. Configure load balancing:

　　If you have multiple servers, consider using load balancing to spread out the traffic. This ensures that each server is operating within its load envelope.

　　7. Error log and monitoring:

　　Review the server and application error logs for any exceptions or error messages. Use monitoring tools to monitor server performance in real time.

　　8. Limit the number of simultaneous connections:

　　If your server cannot handle a large number of concurrent connections, you may want to consider limiting the number of simultaneous connections to prevent overloading the server.

　　9. Upgrade server software:

　　Make sure all software running on the server (operating system, web server, database, etc.) is up to date for performance and security improvements.

　　10. CDN and static resource optimization:

　　Use a content distribution network (CDN) to speed up the transmission of static resources and reduce server pressure.

　　11. Configure the Web server:

　　For specific web servers (such as Nginx, Apache, IIS, etc.), optimize the configuration to improve performance.

　　12. Coping with burst traffic:

　　If the server encounters peak traffic at a specific point in time or when an event occurs, consider implementing countermeasures, such as preheating the cache, adjusting resource allocation, etc.

　　13. Error page design:

　　Make sure your application has good error page design that displays error messages to the user in a friendly manner rather than simply returning "Server Busy".

　　Considering the above factors, we should investigate possible problems one by one and take corresponding optimization and improvement measures to improve the performance and stability of the server. If the problem persists, further detailed investigation and analysis may be required.