Thread Pool Extension

<dubbo:protocol threadpool="xxx" />
<!-- Default value configuration, used when <dubbo:protocol> does not configure threadpool -->
<dubbo:provider threadpool="xxx" />

src
 |-main
    |-java
        |-com
            |-xxx
                |-XxxThreadPool.java (implements ThreadPool interface)
    |-resources
        |-META-INF
            |-dubbo
                |-org.apache.dubbo.common.threadpool.ThreadPool (plain text file, content: xxx=com.xxx.XxxThreadPool)

package com.xxx;
 
import org.apache.dubbo.common.threadpool.ThreadPool;
import java.util.concurrent.Executor;
 
public class XxxThreadPool implements ThreadPool {
    public Executor getExecutor() {
        // ...
    }
}

xxx=com.xxx.XxxThreadPool