pre-commit

关于分布式事务、两阶段提交协议、三阶提交协议

允我心安 提交于 2019-11-29 05:23:25
随着大型网站的各种高并发访问、海量数据处理等场景越来越多,如何实现网站的高可用、易伸缩、可扩展、安全等目标就显得越来越重要。为了解决这样一系列问题,大型网站的架构也在不断发展。提高大型网站的高可用架构,不得不提的就是分布式。在 分布式一致性 一文中主要介绍了分布式系统中存在的一致性问题。本文将简单介绍如何有效的解决分布式的一致性问题,其中包括什么是 分布式事务 , 二阶段提交 和 三阶段提交 。 分布式一致性回顾 在分布式系统中,为了保证数据的高可用,通常,我们会将数据保留多个副本(replica),这些副本会放置在不同的物理的机器上。为了对用户提供正确的增\删\改\差等语义,我们需要保证这些放置在不同物理机器上的副本是一致的。 为了解决这种分布式一致性问题,前人在性能和数据一致性的反反复复权衡过程中总结了许多典型的协议和算法。其中比较著名的有 二阶提交协议 (Two Phase Commitment Protocol)、 三阶提交协议 (Three Phase Commitment Protocol)和 Paxos算法 。 分布式事务 分布式事务是指会涉及到操作多个数据库的事务。其实就是将对同一库事务的概念扩大到了对多个库的事务。目的是为了保证分布式系统中的数据一致性。分布式事务处理的关键是必须有一种方法可以知道事务在任何地方所做的所有动作,提交或回滚事务的决定必须产生统一的结果

关于分布式事务、两阶段提交协议、三阶提交协议

可紊 提交于 2019-11-29 05:00:40
随着大型网站的各种高并发访问、海量数据处理等场景越来越多,如何实现网站的高可用、易伸缩、可扩展、安全等目标就显得越来越重要。为了解决这样一系列问题,大型网站的架构也在不断发展。提高大型网站的高可用架构,不得不提的就是分布式。在 分布式一致性 一文中主要介绍了分布式系统中存在的一致性问题。本文将简单介绍如何有效的解决分布式的一致性问题,其中包括什么是 分布式事务 , 二阶段提交 和 三阶段提交 。 分布式一致性回顾 在分布式系统中,为了保证数据的高可用,通常,我们会将数据保留多个副本(replica),这些副本会放置在不同的物理的机器上。为了对用户提供正确的增\删\改\差等语义,我们需要保证这些放置在不同物理机器上的副本是一致的。 为了解决这种分布式一致性问题,前人在性能和数据一致性的反反复复权衡过程中总结了许多典型的协议和算法。其中比较著名的有 二阶提交协议 (Two Phase Commitment Protocol)、 三阶提交协议 (Three Phase Commitment Protocol)和 Paxos算法 。 分布式事务 分布式事务是指会涉及到操作多个数据库的事务。其实就是将对同一库事务的概念扩大到了对多个库的事务。目的是为了保证分布式系统中的数据一致性。分布式事务处理的关键是必须有一种方法可以知道事务在任何地方所做的所有动作,提交或回滚事务的决定必须产生统一的结果

Code Review before checking in to TFS 2013

不问归期 提交于 2019-11-29 00:34:38
问题 I'm trying to implement a process so that the manager can Review the code of all developers before the developers can check in to TFS 2013. Is there any process to require a review of the code by a human being before it is added to a real project? I'm using TFS 2013 with Visual Studio 2013. 回答1: TFS 2013 supports this out of the box, and is very straight forward to use. Developer needs to file a request for review in the team explorer: Go to Team Explorer Open pending changes Under "Actions"

client side pre-commit hooks in subversion

╄→гoц情女王★ 提交于 2019-11-28 13:25:36
Is any way to setup pre-commit hooks on the client side with an svn client, for example through eclipse or a command line svn client ? No. But you can alias your own script to svn, so it gets called every time you type svn . The script then calls actual svn. How about that? Not sure if it's any help in your particular case, but TortoiseSVN (on Windows) supports client-side hooks. 来源: https://stackoverflow.com/questions/4798201/client-side-pre-commit-hooks-in-subversion

Share common / useful SVN pre-commit hooks [closed]

此生再无相见时 提交于 2019-11-28 03:12:00
What are some common and/or useful pre-commit hooks for SVN? We have a post commit hook that posts the message to a twitter account. Uses twitsvn (disclaimer: I'm a committer on that project). Silly? Maybe...but it turned out to be a good way for us to communicate the goings-on of our repository to some of our version-control-challenged team members. Once SVN started talking to them via their twitter client, it didn't feel so much like a black box. That a user has actually entered a comment on the commit message, and that it contains a particular issue number to track. Checking for absolute

Stop a git commit by a specific author using pre-commit hook

耗尽温柔 提交于 2019-11-27 12:28:22
问题 My plan is to use git to keep track of changes in /etc but when committing I want to have the person making the change specify themselves as author by adding the --author option on the commandline. So I would like to stop accidental commits as root. I tried creating this pre-commit hook but it is not working - git var is still returning root even if I specify the author on commit line. AUTHOR=`git var GIT_AUTHOR_IDENT | sed -n 's/^\(.*>\).*$/\1/p'` if [ "$AUTHOR" == "root <root@localhost>" ];

Can a Git hook automatically add files to the commit?

不问归期 提交于 2019-11-27 03:19:22
I'd like to add an automatically generated file to the same commit using a pre- or post-commit hook in Git, dependent on the files that were modified in that commit. How would I go about this? I've tried this as a pre-commit hook, but no luck: #!/bin/sh files=`git diff --cached --name-status` re="<files of importance>" if [[ $files =~ $re ]] then echo "Creating files" exec bundle exec create_my_files exec git add my_files exec git commit --amend -C HEAD fi This successfully adds them to the repository, but does not add them to the commit. I've also tried using the last two exec lines in a post

Share common / useful SVN pre-commit hooks [closed]

随声附和 提交于 2019-11-26 23:58:13
问题 What are some common and/or useful pre-commit hooks for SVN? 回答1: We have a post commit hook that posts the message to a twitter account. Uses twitsvn (disclaimer: I'm a committer on that project). Silly? Maybe...but it turned out to be a good way for us to communicate the goings-on of our repository to some of our version-control-challenged team members. Once SVN started talking to them via their twitter client, it didn't feel so much like a black box. 回答2: That a user has actually entered a

SVN pre-commit hook for avoiding changes to tags subdirectories

早过忘川 提交于 2019-11-26 21:43:53
Is there anybody who has clear instructions on how to add a pre-commit hook that avoids changes to tags subdirectories? I already searched the internet quite a bit. I found this link: SVN::Hooks::DenyChanges , but I can't seem to compile things. I don't have enough reputation to "comment" on Raim's answer above, but his worked great, with one exception, his grep pattern is wrong. I simply used the below as my pre-commit hook (I didn't have an existing one, you'd need to merge in that case): #!/bin/sh REPOS="$1" TXN="$2" SVNLOOK=/opt/local/bin/svnlook # Committing to tags is not allowed

使用SVN钩子强制提交日志和限制提交文件类型

血红的双手。 提交于 2019-11-26 20:39:00
Subversion本身有很好的扩展性,用户可以通过钩子实现一些自定义的功能。所谓钩子实际上是一种事件机制,当系统执行到某个特殊事件时,会触发我们预定义的动作,这样的特殊事件在Subversion里有很多。那么SVN的钩子有哪些呢?下面简单介绍下: 服务器钩子: 锁定的2种 pre-lock 钩子在每次有人尝试锁定文件时执行。可以防止完全锁定,或者用来创建控制哪些用户可以锁定哪些路径的复杂策略。如果钩子发现已存在锁,也可以决定是否允许用户“窃取”这个锁。 post-lock 在路径锁定后执行。通常用来发送锁定事件邮件通知。 解锁的2种 pre-unlock 钩子在某人企图删除一个文件上的钩子时发生。可以用来创建哪些用户可以解锁哪些文件的策略。制定解锁策略非常重要。如果用户 A 锁定了一个文件,允许用户B 打开这个锁?如果这个锁已经一周了呢?这种事情可以通过钩子决定并强制执行。 post-unlock 在一个或多个路径已经被解锁后执行。通常用来发送解锁事件通知邮件。 提交的3种 start-commit 它在提交事务产生前已运行,通常用来判定一个用户是否有权提交。版本库传给该程序两个参数:到版本库的路径,和要进行提交的用户名。如果程序返回一个非零值,会在事务产生前停止该提交操作。如果钩子程序要在stderr中写入数据,它将排队送至客户端。 pre-commit 在事务完成提交之前运行