From http://tutorials.jenkov.com/java-concurrency/synchronized.html By Jakob Jenkov   A Java synchronized block marks a method or a block of code as synchronized. Java synchronized blocks can be used to avoid race conditions. The Java synchronized Ke…

文章转自网络 Oracle 11g于2007年7月11日美国东部时间11时(北京时间11日22时)正式发布,11g是甲骨文公司30年来发布的最重要的数据库版本,根据用户的需求实现了信息生命周期管理(Information Lifecycle Management)等多项创新. 一．新特性提纲 1.数据库管理部分 ◆数据库重演(Database Replay) 这一特性可以捕捉整个数据的负载,并且传递到一个从备份或者standby数据库中创建的测试数据库上,然后重演负责以测试系统调优后的效果. ◆…

RAC: Frequently Asked Questions [ID 220970.1]   修改时间 13-JAN-2011     类型 FAQ     状态 PUBLISHED   Applies to: Oracle Server - Enterprise Edition - Version: 9.2.0.1 to 11.2.0.1 - Release: 9.2 to 11.2 Purpose Frequently Asked Questions for Real Applicatio…

一．新特性提纲 1.数据库管理部分 ◆数据库重演(Database Replay) 这一特性可以捕捉整个数据的负载,并且传递到一个从备份或者standby数据库中创建的测试数据库上,然后重演负责以测试系统调优后的效果. ◆SQL重演(SQL Replay) 和前一特性类似.但是只是捕捉SQL负载部分,而不是全部负载. ◆计划管理(Plan Management) 这一特性允许你将某一特定语句的查询计划固定下来,无论统计数据变化还是数据库版本变化都不会改变她的查询计划. ◆自动诊断知识库(Auto…

source url: https://flowplayer.org/docs/api.html Global API access Use the flowplayer function to get a global handle on the API: flowplayer(function (api, root) { api.bind("load", function () { // do something when a new video is about to be lo…

Adit Deshpande CS Undergrad at UCLA ('19) Blog About Resume Deep Learning Research Review Week 1: Generative Adversarial Nets Starting this week, I’ll be doing a new series called Deep Learning Research Review. Every couple weeks or so, I’ll be summa…

http://blog.itpub.net/9399028/viewspace-712457/审计(Audit) 用于监视用户所执行的数据库操作,审计记录可存在数据字典表(称为审计记录:存储在system表空间中的 SYS.AUD$ 表中,可通过视图dba_audit_trail查看)或操作系统审计记录中(默认位置为$ORACLE_BASE/admin/$ORACLE_SID/adump/)..默认情况下审计是没有开启的. 不管你是否打开数据库的审计功能,以下这些操作系统会强制记录:用管理员权限…

https://cwiki.apache.org/confluence/display/FLINK/Flink+Improvement+Proposals FLIP-1 : Fine Grained Recovery from Task Failures When a task fails during execution, Flink currently resets the entire execution graph and triggers complete re-execution f…

1. Introduction The Springfox suite of java libraries are all about automating the generation of machine and human readable specifications for JSON APIs written using the spring family of projects. Springfox works by examining an application, once, a…

原文: http://ifeve.com/zookeeper-curato-framework/ zookeeper 的原生客户端库过于底层, 用户为了使用 zookeeper需要编写大量的代码, 为此Curator框架对 zookeeper 进行了高层次的语义封装, 简化使用 zookeeper 的成本. 只可惜 curator 框架仅仅支持 java 语言, 期待 c++版本出现(或者我们自己尝试实现一个) 跟着实例学习ZooKeeper的用法: Curator框架应用 前面的几篇文章介绍了…

先看的这篇文章:http://blog.csdn.net/qq910894904/article/details/41699541 以nginx为代表的事件驱动的异步server正在横扫天下,那么事件驱动模型会是server端模型的终点吗? 我们可以深入了解下,事件驱动编程的模型. 事件驱动编程的架构是预先设计一个事件循环,这个事件循环程序不断地检查目前要处理的信息,根据要处理的信息运行一个触发函数.其中这个外部信息可能来自一个目录夹中的文件,可能来自键盘或鼠标的动作,或者是一个时间事件.这个触…

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2014-08-15 Created By BaoXinjian…

from : http://ian-ni-lewis.blogspot.com/2011/05/ndk-debugging-without-root-access.html NDK debugging without root access   Recently I made a comment to the effect that while ndk-gdb enables debugging on unrooted devices, Nvidia's Eclipse plugin and W…

new Promise new Promise(function(function resolve, function reject) resolver) -> Promise 创建一个新的Promise,传入一个函数,这个函数有两个函数resolve.reject作为参数.这两个参数函数能在这个函数被调用. Example: function ajaxGetAsync(url) { return new Promise(function (resolve, reject) { var xhr…

原文地址:http://www.infoq.com/articles/ddd-in-practice Background Domain Driven Design (DDD) is about mapping business domain concepts into software artifacts. Most of the writings and articles on this topic have been based on Eric Evans' book "Domain Dr…

Status of Hive Authorization before Hive 0.13 SQL Standards Based Hive Authorization (New in Hive 0.13) Restrictions on Hive Commands and Statements Privileges Objects Object Ownership Users and Roles Names of Users and Roles Role Management Commands…

1. Because of a power outage,instance failure has occurred. From what point in the redo log does recovery begin and where does it end?A. Current redo log and inactive redo logB. Checkpoint position to end of redo logC. Beginning of redo log to end of…

In this tutorial we will discuss about different types of questions that can be used in a Java interview, in order for the employer to test your skills in Java and object-oriented programming in general. In the following sections we will discuss abou…

原文地址http://www.vogella.com/tutorials/EclipseRCP/article.html Table of Contents 1. Eclipse 4 1.1. What is Eclipse 4? 1.2. Eclipse 4 vs. Eclipse 3.x 1.3. Terminology 2. The Architecture of Eclipse 2.1. Eclipse based applications 2.2. Core components of…

<?xml version="1.0"?> <?xml-stylesheet type="text/xsl" href="configuration.xsl"?> <!-- Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file dist…

转:http://www.sharepointblues.com/2010/09/01/sharepoint-security-and-permission-system-overview/ SharePoint Permission and Security Mechanisms From time to time, our customers ask us about how SharePoint security and permission features work, and how…

http://highscalability.com/blog/2016/1/25/design-of-a-modern-cache.html MONDAY, JANUARY 25, 2016 AT 8:56AM This is a guest post by Benjamin Manes, who did engineery things for Google and is now doing engineery things for a new load documentation star…

http://www.tbdata.org/archives/1307 Avro和Thrift都是跨语言,基于二进制的高性能的通讯中间件. 它们都提供了数据序列化的功能和RPC服务. 总体功能上类似,但是哲学不一样. Thrift出自Facebook用于后台各个服务间的通讯,Thrift的设计强调统一的编程接口的多语言通讯框架. Avro出自Hadoop之父Doug Cutting, 在Thrift已经相当流行的情况下Avro的推出,其目标不仅是提供一套类似Thrift的通讯中间件更是要建立一个…

以下内容转自 https://codeutopia.net/blog/2015/04/11/what-are-unit-testing-integration-testing-and-functional-testing/,有空了我会翻译一下.嘎嘎 What are Unit Testing, Integration Testing and Functional Testing? TAGS: TESTING Finding your way around the maze that is Jav…

Qt Style Sheets support various properties, pseudo-states, and subcontrols that make it possible to customize the look of widgets. List of Stylable Widgets The following table lists the Qt widgets that can be customized using style sheets: Widget How…

Class loading in AS7 is considerably different to previous versions of JBoss AS. Class loading is based on the JBoss Modules project. Instead of the more familiar hierarchical class loading environment, AS7's class loading is based on modules that ha…

一. ORA-600 概述 Errorsof the form ORA-600 are called internal errors. This section clarifies themisunderstanding of ORA-600s being synonymous with corruption. An ORA-600 usually has up to five arguments associated withit which gives Oracle support and…

Dog-fooding our API - Authentication http://blog.mirajavora.com/authenticate-web-api-using-access-tokens 2013年2月4日 With fabrik (my portfolio and blogging startup) only weeks away from launch I'm excited to start blogging about "how we did it". A…

Coding Properties Code in the Getter Check the user's credentials Check application state Format the returned value Log Lazy Loading related data/object Code in the Setter Check the user's credentials Check application state Validate the incoming val…