关于php写的客服系统，高人！
关于php写的客服系统，请教各位高人！！！！
在网上下了2个PHP开源的客服系统，聊天的时候都是基于数据库实现的，2个聊天窗口都会2-3秒刷新一次数据库里得到里面的聊天记录，然后显示在界面上，想问问大家除了这样的方式还有其它好 一点的吗，这样经常去刷新数据库感觉用户比较多了，对数据库的开销比较大，应用程序的IM软件一般都是采用socket之类的，PHP能否也采用类似的技术实现聊天呢？PHP才刚学习没有多久，希望大家指点指点，不胜感激！！！！！！！
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很遗憾，基本上不可能实现，说什么数据库开销大
其实你用线程做的话，更大呢，，服务器一直要开着才行，然后客户端才能用
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这个问题，这个论坛里面已经讨论了无数次，搜索下吧（不过好像也没讨论出个啥子好的结果），要做这些本来就用java最好
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看看ejabberd
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那你看腾讯微博及时出现微博信息提示是怎么实现的。
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这个真没研究过，做过是可以做！但高负载不知是如何解决的！
腾讯微博是如何处理的？
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