摘要： http://java.amitph.com/2014/01/understanding-java-8-streams-api.htmlSince past few versions, Java has started giving importance to concurrency. Java 8 goes one more step ahead and has developed a Streams API which lets us think about parallelism. Nowadays, because of the tremendous amount of develop 阅读全文

摘要： 1. 状态机基本概念http://zh.wikipedia.org/wiki/%E6%9C%89%E9%99%90%E7%8A%B6%E6%80%81%E6%9C%BA状态存储关于过去的信息，就是说：它反映从系统开始到现在时刻的输入变化。转移指示状态变更，并且用必须满足来确使转移发生的条件来描述它。动作是在给定时刻要进行的活动的描述。有多种类型的动作：进入动作（entry action）：在进入状态时进行退出动作：在退出状态时进行输入动作：依赖于当前状态和输入条件进行转移动作：在进行特定转移时进行FSM（有限状态机）可以使用上面图 1 那样的状态图（或状态转移图）来表示。此外可以使用多种类型的 阅读全文

摘要： http://whatismyipaddress.com/natWhat is Network Address Translation?Network Address Translation(NAT) is the process where a network device, usually a firewall, assigns a public address to a computer (or group of computers) inside a private network. The main use of NAT is to limit the number of publi 阅读全文

摘要： http://luisbg.blogalia.com/historias/74062Thanks toVijay D'Silva'sbrilliant answerincstheory.stackexchange.comI have been reading some of the famous data structures and algorithms used in the Linux Kernel. And so can you.Links based onlinux 2.6:Linked lists,doubly linked lists,lock-free link 阅读全文

摘要： Note that the knowledge for each level is cumulative; being atlevelnimplies that you also know everything from thelevels lower thann.Computer Science2n(Level 0)n2(Level 1)n(Level 2)log(n)(Level 3)Commentsdata structuresDoesn’t know the difference between Array and LinkedListAble to explain and use A 阅读全文

摘要： 1.反向代理定义反向代理（Reverse Proxy）方式是指以代理服务器来接受internet上的连接请求，然后将请求转发给内部网络上的服务器，并将从服务器上得到的结果返回给internet上请求连接的客户端，此时代理服务器对外就表现为一个服务器。引用：http://baike.baidu.com/link?url=wtNaAjRzoRxtxruqa0IpdnUpC103uitnt8wj04_opjWvVGX2HMJF-lNX-9GKBc6l6s-c5HvIz3EzZJVFQ7wTGK2.http反向代理之haproxy详解http://freeloda.blog.51cto.com/203 阅读全文

摘要： http://blog.exceliance.fr/2014/01/02/haproxy-advanced-redis-health-check/HAProxy advanced Redis healthcheckPosted onJanuary 2, 2014 byBaptiste AssmannIntroductionRedisis an opensource nosql database working on a key/value model.One interesting feature inRedisis that it is able to write data to disk 阅读全文

摘要： http://www.git-tower.com/blog/become-a-better-programmer-5-essentials/Become a Better Programmer: 5 Essential Methods at a GlanceTobias Günther, January 2014Developing software in a professional way is more than just the simple act of 'coding'. To grow as a programmer, you'll have t 阅读全文

摘要： http://www.tutorialspoint.com/unix_commands/awk.htmNAMEgawk - pattern scanning and processing languageSYNOPSISgawk[POSIXorGNUstyle options ]-fprogram-file[--] file ...gawk[POSIXorGNUstyle options ] [--]program-textfile ...pgawk[POSIXorGNUstyle options ]-fprogram-file[--] file ...pgawk[POSIXorGNUstyl 阅读全文

摘要： http://how-to.linuxcareer.com/learning-linux-commands-awk1.IntroductionIn this case, the title might be a little misleading. And that is because awk is more than a command, it's a programming language in its own right. You can write awk scripts for complex operations or you can use awk from the 阅读全文