node js mongodb tutorial

This article describes how to install Node on Ubuntu. JS tutorial, Node. JS's high-performance V8 interpreter running and asynchronous mechanism bring great popularity to it. If you need them, you can refer to Node. js uses WebSoc

descriptor (fd). I pass it to fs. createWriteStream to create a fs. WriteStream instance and then use it to write files. Other articles: Node. js development-socket programming Getting started with Node. js development-notepad ++ for Node.

has been learning node for some time, before the Great node. js, the basic understanding of some of the basic usage of node and some concepts, and then began to see the second node. JS Combat, the first chapter is to build a blog

Node. js common module collection and node. js collection It collects some common modules in NodeJS development.MVC Framework-Express Express is a lightweight and flexible Nodejs Web application framework that can quickly build websites. The Express framework is built on the built-in Http module of Nodejs, And the Http

process number export PATH = $ PATH:/usr/local/bin # specify the Node executable program installation directory here, my options are/usr/local/binexport NODE_PATH = $ NODE_PATH: /usr/local/lib/node_modules # the path of the Node class library # You do not need to modify node = nodeforever = forevercase "$1" in start) $ forever start-l $ LOG -- pidFile $ PID-a $

permission, which is not safe. Therefore, it is not recommended to use it in a secure system. $ sudo chown root /usr/local/bin/node$ sudo chmod +s /usr/local/bin/node Articles you may be interested in: Install and configure the node. js + express development environment in win7 How to install

Memory Leak Tutorial) is a short and cool v8-profiler and node-debugger usage Tutorial. It is also the most advanced Node. js Memory Leak debugging technical guide. Joyent's SmartOS platform provides a large number of tools for debugging

Memory Leak Tutorial) is a short and cool v8-profiler and node-debugger usage Tutorial. It is also the most advanced Node. js memory leak debugging Technical Guide. Joyent's SmartOS platform provides a large number of tools for debugging

suddenly interrupted error,sudo rm/var/lib/dpkg/updates/*The main reason should be the/var/lib/dpkg/updates folder inside the data has errors, so that the software update program errors, so you have to remove them completely,This command will re-establish this information via sudo apt-get update, using sudo apt-get upgrade to update the details of the installed software on your computer, according to the software's detailed update software to the latest version.sudo apt-get update #更新源sudo apt-

Node. js has quickly benefited from its event-driven and asynchronous features. This article will introduce 10 articles. It has been tested that it can greatly improve the skills of Node applications. Let's take a look at NodeJS one by one as a server-side JavaScript interpreter, which will change the concept of how the server works. It aims to help programmers b

, he finally found the culprit in the Node kernel: The Event listener in http. ClientRequest was not released. (The patch that finally fixes this problem has only two but crucial letters ). This painful experience prompted Lloyd to write a tool that can help find memory leaks. Memory Leak locating Tool There are already many easy-to-use and constantly enhanced tools to locate the memory leakage of Node.

This article mainly introduces how to use Meteor with Node. js Code example of real-time chat application, Node. as an asynchronous framework, js is used to compile real-time applications. For more information, see Derby. the framework for js comparison is Meteor.

This article mainly introduces the definition of node. js, as well as a summary of the role of node. js, I hope you learn more, let's come and see this article First, let's look at what node. js can do. This is node's more formal

is a fusion of Nodejs and Webkit technologies, providing an underlying framework for client application development across Windows, Linux platforms, Use popular web technologies (NODE.JS,JAVASCRIPT,HTML5) to write your application's platform. Application developers can easily use web technologies to implement a variety of applications. Node-webkit performance and features have made it the world's leading web technology application platform. 5. Operat

Node. js blog instance (10) pv statistics and message statistics, node. jspv Original tutorial. In post. js, modify var post = {...} To (after each change, clear e:/mongodb/blog ): // Document var post = {name: this. name, time:

= ObjectWrap::Unwrap(args.This()); Then we can access the s _ attribute and use its. append () method: obj->s_->append(s); Finally, we return the current value of the s _ attribute (Use scope. Close again ): return scope.Close(v8::String::New(obj->s_->c_str())); Because the v8: String: New () method can only accept char pointer as the value, we need to use obj-> s _-> c_str () to obtain it. In this case, you should create a build directory in the plug-in folder. Test Now we can test our

callback function has complicated the code, and the exception handling in asynchronous mode has increased the complexity of the Code. Articles you may be interested in: Asynchronous Concurrency Control in Nodejs crawler advanced tutorial Nodejs implements the bigpipe asynchronous page loading scheme In-depth analysis of node. js concurrent asynchronous callb

The additional chapter of the python crawler. The installation of mongodb and redis databases on the machine on the master node is not an apt method. It is found that data crawled by crawlers is stored according to the table structure, which is not only troublesome but also redundant. Try this non-relational database to try the storage effect. I don't plan to use redis for comparison here, because he is a m

This article mainly introduces how to optimize Node. this article describes the ten tips for jsWeb application running speed, including parallel, asynchronous, cache, gzip compression, and client rendering. If you need them, refer to Node. js has benefited from its event-driven and asynchronous features, and has become very fast. However, in modern networks, it i

('/home/user/lib/cat') to load modules. NodeJS finds the position of the entry module based on package. json in the package directory. Articles you may be interested in: How to Use npm to publish the Node. JS package When node. js uses npm to install the plug-in, it prompts "install Error: ENOENT". How can this pro