导致可见性的原因是缓存，导致有序性的原因是编译优化，那解决可见性、有序性最直接的办法就是禁用缓存和编译优化

缓存技术蕴含的是空间换时间的思想；压缩体现的是时间换空间的思想；分布式思想也最初体现在 CPU 的设计和实现上

普通磁盘的寻道时间是 10ms 左右，而相比于磁盘寻道花费的时间，CPU 执行指令和内存寻址的时间都在是 ns（纳秒）级别，从千兆网卡上读取数据的时间是在μs（微秒）级别

某些层次负责的是对下层不同实现的抽象，从而对上层屏蔽实现细节。比方说 VFS 对上层（系统调用层）来说提供了统一的调用接口，同时对下层中不同的文件系统规约了实现模型，当新增一种文件系统实现的时候，只需要按照这种模型来设计，就可以无缝插入到 Linux 文件系统中

分层架构可以让我们更容易做横向扩展。如果系统没有分层，当流量增加时我们需要针对整体系统来做扩展。但是，如果我们按照上面提到的三层架构将系统分层后，那么我们就可以针对具体的问题来做细致的扩展

分层架构需要考虑的另一个因素，是层次之间一定是相邻层互相依赖，数据的流转也只能在相邻的两层之间流转

Happens-Before 并不是说前面一个操作发生在后续操作的前面，它真正要表达的是：前面一个操作的结果对后续操作是可见的

Java 内存模型在 1.5 版本对 volatile 语义进行了增强。怎么增强的呢？答案是一项 Happens-Before 规则

Java 内存模型规范了 JVM 如何提供按需禁用缓存和编译优化的方法

final 修饰变量时，初衷是告诉编译器：这个变量生而不变，可以可劲儿优化

“同一时刻只有一个线程执行”这个条件非常重要，我们称之为互斥。如果我们能够保证对共享变量的修改是互斥的，那么，无论是单核 CPU 还是多核 CPU，就都能保证原子性了。

一个或者多个操作在 CPU 执行的过程中不被中断的特性，称为“原子性”

使用 watch 选项允许我们执行异步操作 (访问一个 API)，限制我们执行该操作的频率，并在我们得到最终结果前，设置中间状态。这些都是计算属性无法做到的

如果 <navigation-link> 没有包含一个 <slot> 元素，则该组件起始标签和结束标签之间的任何内容都会被抛弃。

计算属性是基于它们的响应式依赖进行缓存的。只在相关响应式依赖发生改变时它们才会重新求值。这就意味着只要 message 还没有发生改变，多次访问 reversedMessage 计算属性会立即返回之前的计算结果，而不必再次执行函数

组件是可复用的 Vue 实例，所以它们与 new Vue 接收相同的选项，例如 data、computed、watch、methods 以及生命周期钩子等。仅有的例外是像 el 这样根实例特有的选项

One of the amazing things about this chess game called "life", is that we get to choose if we want to be the chess master or the pawn.

I want people to be transported by the hotel. I'm thinking, What is it that would make people be delighted and amazed?

I don't really want to do topless stuff anymore.

Ever since Eve started it all by offering Adam the apple, woman's punishment has been to supply a man with food then suffer the consequences when it disagrees with him.

I claimed identity as Jewish musicians for political reasons, because most of us were touring in Germany and, at this time, twelve years ago, there was a strong resurgence of Nazism in the places we were touring and part of that was on the music scene.

A screen actor is compensated in the knowledge that millions will see his performance at one time, where only hundreds will see it on the stage.

The degree of ones emotions varies inversely with ones knowledge of the facts.

I can tell you I didn't feel good when I could not articulate properly. Getting my GED was important and I want other women to feel that.

There is a majority of scientists that say that global carbon emissions by humans causes some changes in the climate.

I have had to empty two family homes during the last few years - first, the house that had been my grandmother's since 1923, and then my own country home, which we had lived in for over twenty years.

We try to keep a good line of communication open with our children. It's not always about trying to just teach them every moment, but it's about listening to them and trying to understand them and gain that sense of communication so when they need to talk to someone, they know that we're there.

Being Irish, I always had this love of words.

The books I love most are the ones that combine some sort of gripping story with really beautiful or stylish writing. Some of my favorites are 'The Road' by Cormac McCarthy, 'The Virgin Suicides' by Jeffrey Eugenides, 'The Interpreter of Maladies' by Jhumpa Lahiri, and 'Blindness' by Jose Saramago.

I do public appearances. I'm bluff, hearty, goofy. I wear loud clothes, and I read the funny bits. I occasionally get taken to task for one thing or another, and I acknowledge my fault, my flaw, my failure, and I move on.

The truth is incontrovertible. Malice may attack it, ignorance may deride it, but in the end, there it is.

All I write about is what's happened to me and to people I know, and the better I know them, the more likely they are to be written about.

The world would be a duller place without Moulin Rouge.

If you're going to commit to that, you're going to have to find some way to make it bearable and enjoyable.

Confidence is something you acquire in yourself by believing in self ability with courage and conviction.

The Singapore Open is the flagship event of the Asian Tour, it is a massive event and it is being played in a great place. I love coming here and it is good to be back.

The fundamental law of nature is to not know too much about yourself.

Every time you make a movie it's an adventure.

Mergers generate substantial synergies.

Every economy is uncertain. Referring to this or any economy as "uncertain" is an unnecessary and pessimistic redundancy.