mongodb findoneandupdate

Data model and Base operation templateIn order to make the engineering structure clear, the establishment of data Model (SCHEMA) and the base operation template of adding and deleting and modifying are named as collection in database design

Mongodbtags (space delimited): Database MongoDb InstallationCurrent version 2.XExtract to any directory, it is best not to beCPlate. Create a folder in the root directory to store the projectMy example: Install to:D:\mongodbCreate a storage

Mongoose learning comprehension (recommended) and mongoose learning Comprehension 1. Create schemas How to Create schemas: var userSchema = new mongoose.Schema({ name: String, email: String, createdOn: Date }); Schemas has the following data

The previous article describes the use of the template engine Pug.js, which is mainly written in the background logic.Backstage most of the functions have, but in the state of being logged in, the foreground and the background of the logical

Overview of Message queues Message Queue Middleware is an important component in distributed system, which mainly solves the problems of application coupling, asynchronous message, traffic sharpening and so on. Achieve high-performance, highly

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