nedb nodejs 数据库学习

  // 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 loadingvar 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 loadingvar 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 ~/.config/nwtest/nedb-data/something.dbvar 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();

来源： https://github.com/louischatriot/nedb

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