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    ThreadPool Extension

    Summary

    Thread pool strategy extension for service provider. When server receives one request, it needs a thread from thread pool to execute business logic in service provider.

    Extension Interface

    org.apache.dubbo.common.threadpool.ThreadPool

    Extension Configuration

    <dubbo:protocol threadpool="xxx" />
<!-- default configuration, it will take effect when threadpool attribute is not specified in <dubbo:protocol> -->
<dubbo:provider threadpool="xxx" />

    Existing Extension

    • org.apache.dubbo.common.threadpool.FixedThreadPool
    • org.apache.dubbo.common.threadpool.CachedThreadPool

    Extension Guide

    Directory layout:

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

    XxxThreadPool.java：

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

    META-INF/dubbo/org.apache.dubbo.common.threadpool.ThreadPool：

    xxx=com.xxx.XxxThreadPool