Kevin linkdonghh

##分布式系统(Distributed System)资料

#####希望转载的朋友，你可以不用联系我．但是一定要保留原文链接，因为这个项目还在继续也在不定期更新．希望看到文章的朋友能够学到更多．

介绍:这是一篇介绍在动态网络里面实现分布式系统重构的paper.论文的作者(导师)是MIT读博的时候是做分布式系统的研究的,现在在NUS带学生,不仅仅是分布式系统,还有无线网络.如果感兴趣可以去他的主页了解.

Elasticsearch was created in 2010 by Shay Banon after forgoing work on another search solution, Compass, also built on Lucene and created in 2004.

	@Configuration
	@EnableCaching
	public class CacheConfiguration {
	@Bean
	public JCacheManagerFactoryBean cacheManagerFactoryBean() throws Exception {
	JCacheManagerFactoryBean jCacheManagerFactoryBean = new JCacheManagerFactoryBean();
	jCacheManagerFactoryBean.setCacheManagerUri(new ClassPathResource("ehcache.xml").getURI());
	return jCacheManagerFactoryBean;
	}

	Latency Comparison Numbers (~2012)
	----------------------------------
	L1 cache reference 0.5 ns
	Branch mispredict 5 ns
	L2 cache reference 7 ns 14x L1 cache
	Mutex lock/unlock 25 ns
	Main memory reference 100 ns 20x L2 cache, 200x L1 cache
	Compress 1K bytes with Zippy 3,000 ns 3 us
	Send 1K bytes over 1 Gbps network 10,000 ns 10 us
	Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD