mongoose performance

Mongodb MongoDB is a JavaScript-based database, stored in JSON format, and node is a JavaScript based environment (library), so the pairing of node and MongoDB can reduce the time and space overhead associated with data transformations. Mongoose MongoDB is an object model tool that converts data from a database into a JavaScript object for use in your application, encapsulating common methods such as MongoDB for some additions and deletions to the

1. Intro At the node end, the Express HTTP boot and Mongoose MongoDB connections are asynchronous, so it is encountered that when the Web site is opened, the database is not connected, causing a query error, or encountering the database already connected, but the HTTP service has failed to start. There is a more complicated use scenario: first, link the database, then middleware (such as query fixed configuration, such as site title, Administrator inf

Tags: Verify options note localhost crud pre type unique MonThis article focuses on installing the basic tutorial using Mongoose to let node. js operate MongoDB, front-end js+ back-end Node+js Operation MongoDB is the so-called most popular kind of JavaScript full stack development program, need friends can refer to the next Installing Mongoose To prepare a TESTMONGODB project using Express, the command seq

Tags: packaging username font database Image Nodejs Mic Install valueMongoDB Introduction: MongoDB is a JavaScript-based database, the storage format is JSON, and node is a JavaScript-based environment (library), so node and MongoDB collocation can reduce the time and space cost of data conversion. Mongoose Introduction: is a MongoDB object Model tool that transforms data from a database into JavaScript objects for you to use in your application, enc

Mongoose api:http://mongoosejs.com/docs/api.htmlMongoose Linksvar mongoose = require (' Mongoose ');var db = mongoose.createconnection (' Mongodb://127.0.0.1:27017/nodejs ');Link errorDb.on (' Error ', function (error) {Console.log (Error);});Schema structurevar mongooseschema = new Mongoose. Schema ({Username: {type:s

Mongoose: how to solve the problem that unique does not take effect and how to remove the unique restriction, mongooseunique Preface Unique is a member of schema Constraints Verification. Its role is to make the value of a field unique (cannot be repeated) To keep the field unique, use the type value:{type:String,unique:true,dropDups: true} Note:Once mongoose modifies the data storage organization, the data

Label:Brief introductionToday we will learn mongoose, what is mongoose, it is in MongoDB what is the relationship between it, what it can be used to do, introduce mongoose before we first a brief look at MongoDB. MongoDB is an open source NoSQL database, compared to MySQL-like relational database, it is more light and flexible, it is very suitable for use in the

Label:A article schema is defined first. var mongoose = require (' Mongoose '); var Schema = Mongoose. Schema; Exports.schema = new Schema ({ title:string,//title description:string,//Description content:string,//content Status:{type:number, defalut:0},//unpublished: 0, posted: 1 create_at: {type:date, default:date.now}//add Time }); Add a test data

noun explanation Schema: A database model skeleton stored as a file, not capable of database operation Model: The Schema model generated by the publication, database operations with abstract properties and behaviors From the Cnode community1. Create a local database and connect:var mongoose = require (' Mongoose ');　　　　　Get Mongoose Module Mongo

1.1 Noun explanations Schema: A database model skeleton stored as a file, not capable of database operation Model: The Schema model generated by the publication, database operations with abstract properties and behaviors Entity: by Model Creating an entity, his actions also affect the database Attention:1. This learning document uses a strict naming method to differentiate different objects, such as: var PersonSchema; //Person的文本属性 var PersonModel; //Person的数据库模型

Mongoose Reference Manualtags (space delimited): MongoDB In general, we do not directly use MongoDB functions to manipulate MongoDB database Mongose is a set of Operations MongoDB database interface.SchemaA database model skeleton, stored as a file, does not have direct access to the database, which means that it does not have the ability to manipulate the database. Can be said to be a data attribute model (the traditional meaning of the table s

Tags: http io os using AR java for strong dataUsing Mongoose to manipulate MongoDB in BaeAlmost all of the examples on the web using mongoose are long-connected, because the relationship between the Nodejs itself mechanism, the use of long connections to some extent will improve performance, but Bae's free MongoDB does not support long links, many people have tri

Built-in PromisesMongoose asynchronous operations, like. Save () and queries, return promises/a+ conformant Promises. This means the can do things like Mymodel.findone ({}). then () and yield Mymodel.findone ({}). EXEC () (If you ' re using CO ).This means that you can do something like Mymodel.findone ({}). then () and yield Mymodel.findone ({}). exec (if you're using CO)For backwards compatibility, Mongoose 4 returns mpromise promise by default. va

Turn from: What is Https://cnodejs.org/topic/548e54d157fd3ae46b233502Mongoose?In general, we do not directly use MongoDB functions to manipulate MongoDB database Mongose is a set of Operations MongoDB database interface.SchemaA database model skeleton, stored as a file, does not have direct access to the database, which means that it does not have the ability to manipulate the database. Can be said to be a data attribute model (the traditional meaning of the table structure), or a "set" model sk

ObjectiveAfter reading the node. JS actual combat, which in the data storage section mentioned Redis, Mongodb, I myself also wrote a few simple demo according to the book introduction, in the demo process first encountered the problem is the data type and common curd. The common operation of MongoDB is in two ways, one is to use the API directly, and it is equivalent to using T-SQL to write SQL statements to manipulate the data in the server client, followed by using the