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好像JE的搜索功能挂掉了?

晕 我搜索文章连续敲了好几个关键字都没结果 像“测试”什么的 ,但是搜会员是好的。

2007-11-24 23:09:26 101

mysql 百万级数据插入更新速度问题

大家好^^ 我现在正在作毕业设计 题目是构建一个[color=red]搜索引擎[/color] 现在已经实现了crawler,代码全是自己写的,没有参开其他的open source,所以完全没有学习人家的开源的思想,比如nutch,然后再所以没有用文件作url的库,用的是mysql 5.0的innodb表,数据库中一共有12张表,分别是vUrls(以访问的url),urls_0到url...

2007-11-12 00:02:55 783

多线程并发访问mysql 插入记录很慢

手头正在写的程序中有多线程(线程数

2007-11-03 13:29:34 2137

不解的内存泄露(2)

因为前面一个星期回家看病(都是coding)惹得祸 所以一直没上线 所以前面的帖子就没看 当然问题也没解决 [url]http://www.iteye.com/post/400274[/url] 有朋友说MD5有问题 我觉得没有阿 还是贴下保险 [code] /** * @functionName: generateMD5 * @description: g...

2007-10-31 14:22:03 116

不解的内存泄露

这边有个程序给改了之后发生了内存泄露 但是自己找不出原因 大家看看是哪出错了 这是根据jprofile找出的内存使用不正常的代码 [code]private ArrayList ParseHyperLinks() throws ParserException { ArrayList hyperLinks = new ArrayList(); SimpleNo...

2007-10-24 17:22:31 76

用socket抓取网页 建立连接后如何复用同一个socket?

[b]以下是程序 只能抓取前面一个网页 后面复用的不行 [/b] [code]public class text { public static void main(String[] args) throws IOException { String hostname = "www.iteye.com"; int port = 80; InetAddress addr = In...

2007-10-09 23:34:23 127

pro hadoop apress

Applications frequently require more resources than are available on an inexpensive machine. Many organizations find themselves with business processes that no longer fit on a single cost-effective computer. A simple but expensive solution has been to buy specialty machines that have a lot of memory and many CPUs. This solution scales as far as what is supported by the fastest machines available, and usually the only limiting factor is your budget. An alternative solution is to build a high-availability cluster. Such a cluster typically attempts to look like a single machine, and typically requires very specialized installation and administration services. Many high-availability clusters are proprietary and expensive. A more economical solution for acquiring the necessary computational resources is cloud computing. A common pattern is to have bulk data that needs to be transformed, where the processing of each data item is essentially independent of other data items; that is, using a single-instruction multiple-data (SIMD) algorithm. Hadoop Core provides an open source framework for cloud computing, as well as a distributed file system. This book is designed to be a practical guide to developing and running software using Hadoop Core, a project hosted by the Apache Software Foundation. This chapter introduces Hadoop Core and details how to get a basic Hadoop Core installation up and running. hadoop pro pdf java distribute hadoop pro pdf java distribute hadoop pro pdf java distribute hadoop pro pdf java distribute hadoop pro pdf java distribute hadoop pro pdf java distribute hadoop pro pdf java distribute hadoop pro pdf java distribute hadoop pro pdf java distribute

2009-09-15

memorymanagement_whitepaper

sun memory management whitepaper

2009-05-17

nekohtml.jar

nekohtml.jar 解析html的jar包 非常的实用

2008-09-08

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