十二月 | 2012 | 阿土's Blog

月度归档：2012年12月

最近对组成成员进行了一次简单的版本管理与版本控制的分享,其实这些东西都是开发中必不可少的,只是以前的工作重点并没有放在这个方面.废话少说,我们先了解下什么是版本管理与版本控制.

版本管理表示对项目整体版本的演变过程管理,最简单的如v1.0变更至v1.1,从snapshot变更至release.
一般情况下版本发布应该具备以下条件:

最近生产环境的red5经常出现拒绝服务的问题,仔细查看日志后发现所有的请求都是NioProcessor-1来完成,如果请求服务过多,会导致该线程处理不过来,也将导致线上其它服务将无响应,仔细查看了下RTMPMinaTransport构造源码

public void start() throws Exception {

initIOHandler();

IoBuffer.setUseDirectBuffer(!useHeapBuffers); // this is global, oh well

if (useHeapBuffers) {

// dont pool for heap buffers

IoBuffer.setAllocator(new SimpleBufferAllocator());

}

log.info("RTMP Mina Transport Settings");

log.info("Connection Threads: {}", connectionThreads);

log.info("I/O Threads: {}", ioThreads);

//use default parameters, and given number of NioProcessor for multithreading I/O operations

//acceptor = new NioSocketAcceptor(ioThreads);

//create separate executors to handle connections and i/o

Executor connectionExecutor = Executors.newFixedThreadPool(connectionThreads);

Executor ioExecutor = Executors.newFixedThreadPool(ioThreads);

acceptor = new NioSocketAcceptor(connectionExecutor, new NioProcessor(ioExecutor));

acceptor.setHandler(ioHandler);

acceptor.setBacklog(50);

log.info("TCP No Delay: {}", tcpNoDelay);

log.info("Receive Buffer Size: {}", receiveBufferSize);

log.info("Send Buffer Size: {}", sendBufferSize);

...

}