Original link from : http://searchservervirtualization.techtarget.com/tip/Understanding-hosted-and-bare-metal-virtualization-hypervisor-types A virtualization hypervisor comes in one of two forms: a bare-metal hypervisor, also known as Type 1; or a h…
Unlike most of the other projects in this book, NoSQL is not a tool, but an ecosystem composed of several complimentary and competing tools. The tools branded with the NoSQL monicker provide an alternative to SQL-based relational database systems for…
Introduction The Internet changes the ways in which companies handle their day-to-day business and how they compete in the marketplace. With the advent of new Web technologies and an increase in the number of customers accessing resources that are av…
Introduction The Internet changes the ways in which companies handle their day-to-day business and how they compete in the marketplace. With the advent of new Web technologies and an increase in the number of customers accessing resources that are av…
原文地址:http://i.cnblogs.com/EditPosts.aspx?opt=1. I wrote a first version of this posting on consistency models about a year ago, but I was never happy with it as it was written in haste and the topic is important enough to receive a more thorough trea…
应该说搞分布式系统必读的文章了,转过来,这是2008年12月Werner revise过的版本,先贴上内容简介:分布式系统的CAP理论 CAP理论(data consistency, system availability, and tolerance),也就是数据一致性,系统可用性和网络分区容错性,在一个分布式系统中CAP是不能同时保证的,最多只能同时满足两个.如果一个系统不必考虑网络分区容错性,那么它可以同时取得数据一致性和可用性,这通常可以通过处理协议来保证. 然而不考虑网络分区容错…
