NeDB 介绍
Other NeDB - 用JavaScript编写的嵌入式 数据库 。可用于Node.js,nw.js,electron和浏览器，100％JavaScript，无二进制依赖。API是MongoDB的 一个 子集，速度很快。
安装与测试
npm和bower上的模块 名称 是nedb。
npm install nedb --save # Put latest version in your package.json
npm test # You'll need the dev dependencies to launch tests
bower install nedb # For the bro wser versions,which will be in bro wser-version/out
您可以将NeDB用作仅内存数据存储或持久数据存储。 一个 数据存储区相当于MongoDB集合。构造 函数 如下使用，new Datastore(options)
例子
// Type 1: In-memory only datastore (no need to load the database)
var Datastore = require('nedb')
,db = new Datastore();
// Type 2: Persistent datastore with manual loading
var Datastore = require('nedb')
,db = new Datastore({ filename: 'path/to/datafile' });
db.loadDatabase(function (err) { // Callback is optional
// Now commands will be executed
});
// Type 3: Persistent datastore with automatic loading
var Datastore = require('nedb')
,db = new Datastore({ filename: 'path/to/datafile',autoload: true });
// You can issue commands right away
// Type 4: Persistent datastore for a Node Webkit app called 'nwtest'
// For example on Linux,the datafile will be ~/.con fig /nwtest/nedb-data/something.db
var Datastore = require('nedb')
,path = require('path')
,db = new Datastore({ filename: path.join(require('nw.gui').App.dataPath,'something.db') });
// Of course you can create multiple datastores if you need several
// collections. In this case it's usually a good idea to use autoload for all collections.
db = {};
db.users = new Datastore('path/to/users.db');
db.robots = new Datastore('path/to/robots.db');
// You need to load each database (here we do it asynchronously)
db.users.loadDatabase();
db.robots.loadDatabase();
GitHub: https://github.com/louischatriot/nedb
网站描述: 用JavaScript编写的嵌入式 数据库
NeDB官方网站
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