向上无缝滚动--原理及思想
1、con2只是用来进行对con1的空白填补的,当判断if语句后,area.scrollTop=0;迅速使con1回到初始状态。速度很快无法看到。向上无缝滚动body{font-size:12px;line-height:24px;text-algin:center;/*页面内容居中*/}*{margin:0px;padding:0px;/*去掉所有标签的marign和padding的值*/}ul
使用Docker进行Redis主从复制实践
一、背景最近在做零信任安全网关,需要使用Redis作为认证缓存服务器,因为网关服务器分布在多个集群,每次都跨机房认证不太实现;所以需要使用Redis主从同步,将过程记录下来,希望可以给需要的同学一点参考。二、操作步骤安装Docker主服务配置从服务配置验证同步效果三、安装Docker本篇文章主要是问了记录主从配置的过程,因此我采用最简单的docker方式来搭建Redis服务,安装docker的命令
AntDesign Pro + .NET Core 实现基于JWT的登
很多同学说AgileConfig的UI实在是太丑了。我想想也是的,本来这个项目是我自己使用的,一开始甚至连UI都没有,全靠手动在数据库里修改数据。后来加上了UI也是使用了老掉牙的bootstrap3做为基础样式。前台框架也是使用了angularjs,同样是老掉牙的东西。过年期间终于下决心翻新AgileConfig的前端UI。最后选择的前端UI框架为AntDesignPro+React。至于为啥选A
使用nvm管理node.js版本以及更换npm淘宝镜像源
1,前言注意:此教程仅限Windows,Mac可能不适用在我们的日常开发中可能会遇到这种情况:手上有好几个项目,每个项目的需求不同,进而不同项目必须依赖不同版的node.js,如果没有一个合适的工具,这个问题将非常棘手。所以,nvm应运而生。2,安装nvm1,首先需要卸载已安装的node.js,卸载完成后,请检查环境变量,如果还有node.js,请去掉,保证系统已经无任何node.js残留。nvm
记一次 .NET 某外贸Web站 内存泄漏分析
一:背景1.讲故事上周四有位朋友加wx咨询他的程序内存存在一定程度的泄漏,并且无法被GC回收,最终机器内存耗尽,很尴尬。沟通下来,这位朋友能力还是很不错的,也已经做了初步的dump分析,发现了托管堆上有10w+的byte[]数组,并占用了大概1.1G的内存,在抽取几个byte[]的gcroot后发现没有引用,接下来就排查不下去了,虽然知道问题可能在byte[],但苦于找不到证据。?????????
The Oracle Background Processes for Sybase Pros
The Oracle Background Processes for Sybase Pros a introduce document of oracle[@more@]Page 1 The Oracle Background Processes for Sybase Pros By Mich Talebzadeh September 2006 In this article we will be looking at the Oracle background processes and what they mean. Mich Talebzadeh is a consultant and a technical architect who has worked with Sybase and other databases since the early 1990s. He is the co-author of the book “Sybase Transact SQL Programming Guidelines and Bes
LGWR group commits(原)
LGWR group comments the transactions when there are more than one transactions commited while the previous commition processed.[@more@]In times of high activity, LGWR can write to the redo log file using group commits. For example, assume that a user commits a transaction. LGWR must write the transaction's redo entries to disk, and as this happens, other users issue COMMIT statements. However, LGWR cannot write to the redo log file to commit these transactions until it has completed its previous
Performing Tablespace Point-in-Time Recovery with Recovery Manager(转)
I went over TSPITR.[@more@]Performing Tablespace Point-in-Time Recovery with Recovery Manager This chapter describes how to use Recovery Manager (RMAN) to perform tablespace point-in-time recovery (TSPITR), and includes the following topics: Introduction to RMAN TSPITR Planning for TSPITR Preparing the Auxiliary Instance for TSPITR Performing TSPITR Preparing the Target Database for Use After TSPITR Responding to Unsuccessful TSPITR Tuning TSPITR Performance Intr
Data Quality and Data Cleaning
Data Quality and Data Cleaning[@more@]Data QualityETL Data CleaningModel DesignBusiness RuleExample:Verify Data with Decision Tree AlgorithmUtility:Firstlogic of BOInformaticaReference:数据质量评估框架-通用框架http://dsbb.imf.org/vgn/images/pdfs/dqrsdqaf新形势下提高统计数据质量的思考http://www.statistic.hainan.gov.cn/ReadNews.asp?NewsID=225统计数据质量涵义之我见http://www.stats.gov.cn/tjshujia/tjjy/t20050330_402239632.htmData Quality Tools for Data Warehousing - A Small Sample Surveyhttp://www.
ETL和EAI比较
ETL和EAI比较[@more@]整合出来的文章,仅供参考,:)什么是EAI?企业的业务流程会同时涉及到多个应用系统,因此要求这些系统能够协同,但接口、架构的不统一往往使得这些本应紧密集成的应用系统成为了一个个“信息孤岛”。于是,企业应用集成(EnterpriseApplication Integration,EAI)技术应运而生,它可以通过中间件作为粘合剂来连接企业内外各种业务相关的异构系统、应用以及数据源,从而满足E-Commerce、ERP、CRM、SCM、OA、数据库、数据仓库等重要系统之间无缝共享和交换数据的需要。EAI 涉及技术广泛,实施复杂。基本特征EAI 的核心是