2016 年 11月随笔档案 - huey2672

MongoDB - The mongo Shell, Configure the mongo Shell

摘要：Customize the Prompt You may modify the content of the prompt by setting the variable prompt in the mongo shell. The promptvariable can hold strings a 阅读全文

posted @ 2016-11-30 23:46 huey2672 阅读(315) 评论(0) 推荐(0)

MongoDB - Introduction of the mongo Shell

摘要：Introduction The mongo shell is an interactive JavaScript interface to MongoDB. You can use the mongo shell to query and update data as well as perfor 阅读全文

posted @ 2016-11-30 23:08 huey2672 阅读(367) 评论(0) 推荐(0)

MongoDB - Introduction to MongoDB, MongoDB Extended JSON

摘要：JSON can only represent a subset of the types supported by BSON. To preserve type information, MongoDB adds the following extensions to the JSON forma 阅读全文

posted @ 2016-11-30 20:08 huey2672 阅读(881) 评论(0) 推荐(0)

MongoDB - Introduction to MongoDB, BSON Types

摘要：BSON is a binary serialization format used to store documents and make remote procedure calls in MongoDB. The BSON specification is located at bsonspe 阅读全文

posted @ 2016-11-30 17:14 huey2672 阅读(326) 评论(0) 推荐(0)

MongoDB - Introduction to MongoDB, Documents

摘要：MongoDB stores data records as BSON documents. BSON is a binary representation of JSON documents, though it contains more data types than JSON. For th 阅读全文

posted @ 2016-11-30 15:28 huey2672 阅读(239) 评论(0) 推荐(0)

MongoDB - Introduction to MongoDB, Capped Collections

摘要：Overview Capped collections are fixed-size collections that support high-throughput operations that insert and retrieve documents based on insertion o 阅读全文

posted @ 2016-11-30 13:34 huey2672 阅读(324) 评论(0) 推荐(0)

MongoDB - Installing MongoDB on Linux

摘要：1. 下载最新稳定版本的安装包。 2. 解压安装包。 3. 设置环境变量。 4. 创建数据目录。 5. 启动服务。 6. 运行 MongoDB Shell 阅读全文

posted @ 2016-11-30 11:13 huey2672 阅读(269) 评论(0) 推荐(0)

MongoDB - Introduction to MongoDB

摘要：MongoDB is an open-source document database that provides high performance, high availability, and automatic scaling. Document Database A record in Mo 阅读全文

posted @ 2016-11-30 10:03 huey2672 阅读(152) 评论(0) 推荐(0)

Java MongoDB Driver 3.x - Quick Start

摘要：Maven Dependency: Make a Connection The following example shows five ways to connect to the database mydb on the local machine. If the database does n 阅读全文

posted @ 2016-11-28 21:10 huey2672 阅读(521) 评论(0) 推荐(0)

Table of Contents - MongoDB

摘要：Getting Started Installation Installing MongoDB on Windows Installing MongoDB on Linux Introduction Introduction to MongoDB Databases and Collections 阅读全文

posted @ 2016-11-28 17:35 huey2672 阅读(163) 评论(0) 推荐(0)

MongoDB - Installing MongoDB on Windows

摘要：1. 在 http://www.mongodb.org/downloads 选择下载所需的版本。 2. 执行 msi 安装包，可通过 Custom 选项，选择安装目录。 3. 创建数据目录。MongoDB 需要一个存储数据的目录，如果不指定， Windows 环境默认使用 c:\data\db。 4 阅读全文

posted @ 2016-11-26 15:34 huey2672 阅读(262) 评论(0) 推荐(0)

Java Concurrency - Concurrent Collections

摘要：Data structures are a basic element in programming. Almost every program uses one or more types of data structures to store and manage their data. Jav 阅读全文

posted @ 2016-11-23 20:48 huey2672 阅读(359) 评论(0) 推荐(0)

Java Concurrency - java.util.concurrent API Class Diagram

摘要：摘自: www.uml-diagrams.org Here we provide several UML class diagrams for the Java™ 7 java.util.concurrent package. Several java.util.concurrent.* packa 阅读全文

posted @ 2016-11-20 11:56 huey2672 阅读(445) 评论(0) 推荐(0)

Java Concurrency - Fork/Join Framework

摘要：Normally, when you implement a simple, concurrent Java application, you implement some Runnable objects and then the corresponding Thread objects. You 阅读全文

posted @ 2016-11-16 13:22 huey2672 阅读(373) 评论(0) 推荐(0)

Java Concurrency - 取消线程执行器中的线程

摘要：When you work with an executor, you don't have to manage threads. You only implement the Runnable or Callable tasks and send them to the executor. It' 阅读全文

posted @ 2016-11-07 19:23 huey2672 阅读(167) 评论(0) 推荐(0)

Java Concurrency - ScheduledThreadPoolExecutor

摘要：The Executor framework provides the ThreadPoolExecutor class to execute Callable and Runnable tasks with a pool of threads, which avoid you all the th 阅读全文

posted @ 2016-11-07 17:38 huey2672 阅读(237) 评论(0) 推荐(0)

Java Concurrency - invokeAny & invokeAll

摘要：Running multiple tasks and processing the first result A common problem in concurrent programming is when you have various concurrent tasks that solve 阅读全文

posted @ 2016-11-07 14:55 huey2672 阅读(527) 评论(0) 推荐(0)

Java Concurrency - Callable & Future

摘要：One of the advantages of the Executor framework is that you can run concurrent tasks that return a result. The Java Concurrency API achieves this with 阅读全文

posted @ 2016-11-05 15:57 huey2672 阅读(187) 评论(0) 推荐(0)

Java Concurrency - 线程执行器

摘要：Usually, when you develop a simple, concurrent-programming application in Java, you create some Runnable objects and then create the corresponding Thr 阅读全文

posted @ 2016-11-04 21:02 huey2672 阅读(351) 评论(0) 推荐(0)

Git - Eclipse 提交工程至 GitHub

摘要：1. 在 GitHub 新建一个工程 hello-world，repository 地址是 https://github.com/username/hello-world.git 2. 在 Eclipse 新建一个工程 hello-world 3. 选择工程右键 -> Team -> Share P 阅读全文

posted @ 2016-11-04 16:12 huey2672 阅读(186) 评论(0) 推荐(0)

Java Concurrency - Semaphore 信号量

摘要：Semaphore 是一个控制访问多个共享资源的计数器。当一个线程想要访问某个共享资源，首先，它必须获得 semaphore。如果 semaphore 的内部计数器的值大于 0，那么 semaphore 减少计数器的值并允许访问共享的资源。计数器的值大于 0 表示，有可以自由使用的资源，所以线程可阅读全文

posted @ 2016-11-02 14:33 huey2672 阅读(232) 评论(0) 推荐(0)