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How should I store GUID in MySQL tables?
... For the curious, these functions are superior to just UNHEX(REPLACE(UUID(),'-','')) because it arranges the bits in an order that will perform better in a clustered index.
– Slashterix
Feb 2 '14 at 1:28
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How to change Vagrant 'default' machine name?
... change when you restart. (3) The project is mapped to a VirtualBox VM via UUID, which is stored in PROJECT_ROOT/.vagrant/machines/default/virtualbox/id. This UUID is not visible in the VirtualBox GUI (virtualbox.org/ticket/6989), but you can use VBoxManage list vms on the command line.
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将Linux代码移植到Windows的简单方法 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...去。
利用这些资料,并通过相关的工具比如sourceinsight来搜索Cygwin本身的源代码,Link问题并不难处理。只是有可能在处理link问题的过程中会回复到上面的问题,编译不过。这个时候的代码修改还是一定要注意不要引入太多的新...
CDN(内容分发网络)技术原理 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...,直接使用被加速网站原有的域名即可访问),又要在为指定的网站提供加速服务的同时降低对ICP的影响,只要修改整个访问过程中的域名解析部分,以实现透明的加速服务,下面是CDN网络实现的具体操作过程。
1)、作为ICP...
Strings as Primary Keys in SQL Database [closed]
...t you should use. I would also say there are definitely times for GUID or UUID fields in databases where an autoincrement field would not work.
– Ryan Guill
Feb 5 '09 at 20:16
7
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A complete solution to LOCALLY validate an in-app receipts and bundle receipts on iOS 7
.... From RMAppReceipt:
- (BOOL)verifyReceiptHash
{
// TODO: Getting the uuid in Mac is different. See: https://developer.apple.com/library/content/releasenotes/General/ValidateAppStoreReceipt/Chapters/ValidateLocally.html#//apple_ref/doc/uid/TP40010573-CH1-SW5
NSUUID *uuid = [[UIDevice curren...
搭建高可用mongodb集群(二)—— 副本集 - 大数据 & AI - 清泛网 - 专注C/...
...节点,但是可以投票,一般用于备份数据。
Delayed:可以指定一个时间延迟从primary节点同步数据。主要用于备份数据,如果实时同步,误删除数据马上同步到从节点,恢复又恢复不了。
Non-Voting:没有选举权的secondary节点,纯...
裁员!裁员!创业者们的2016“寒冬大逃杀” - 资讯 - 清泛网 - 专注IT技能提升
...找工作也得降薪,大部分公司都在缩减成本。”
在百度搜索,关于“裁员”的新闻有263,000篇,整整38页,其中30页是发生在2016年的。
从理性上看,这是必然之举。一个美元基金合伙人对36氪说,前段时间他碰到自己投的一个创...
如何建立一套适合自己的高胜算交易系统 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...。从而使交易者由于心理极度的恐惧,在行情还没有到达指定的止损位置时,就匆匆平仓出局。从而导致整个操作变形,或由于恐惧从而放弃一个原本良好的操作系统。
交易是一种在收益和风险中寻求平衡的学科。我们既不能...
Exposing database IDs - security risk?
...is is the only one that should ever be exposed to the client. Using random UUIDs for these is a practical solution for assigning these surrogate keys, even though they aren't cryptographically secure.
One place where cryptographically unpredictable identifiers is a necessity, however, is in session...
