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Mongoose source code The bottom layer of Mongoose is written in javaScript. javaScript has only one Number type, Number, which can be integer or decimal, so Mongoose is the same number section: This part is the process of number converting different types into number Mongoose is a further optimized encapsulation of the Node's native Mongo ...

Author: Huan HaoSource: Hang Seng LIGHT cloud communitysummaryMongoDB is a persistent document oriented database for storing and processing data in the form of documents.Like other database management systems, MongoDB can manage and interact with data through four basic types of data operations:C: Create an operation that involves writing data ...

Author: Huan HaoSource: Hang Seng LIGHT cloud communitysummaryMongoDB is a persistent document oriented database for storing and processing data in the form of documents.Like other database management systems, MongoDB can manage and interact with data through four basic types of data operations:C: Create an operation that involves writing data ...

The functions and optimization principles of MongoDB index and MySql index are basically similar. MySql index types can be basically divided into:Single key index - Union indexPrimary key index (clustered index) - non primary key index (non clustered index)In addition to these basic classifications, there are some special index types in MongoDB ...

Noun exegesis In the screenshot below, some terms need to be explained for ease of understanding and application: cuckoo is called the library name, that is, the name of the databaseusers is called the collection name, that is, the name of the colonyRight band_ Rows of IDS are called documentsAnd_ ID, username and password are called fieldsT ...

In this tutorial, we will build a Spring Boot application that demonstrates how to use the MongoTemplate API to access data in the MongoDB database. For MongoDB, we will use mLab , it provides the MongoDB database as a service platform, so you don't even have to install the MongoDB database on your computer. to configure To quickly set up our p ...

Mongodb shared cluster consists of: Shards: each shard needs to be deployed as a replica set, which is responsible for storing data. Multiple shards can be deployed mongos: equivalent to routing config servers: the configuration server of the entire cluster, which is also a replica set The development environment can be simpler: docker bu ...

1, MongoDB replica set The main significance of MongoDB replica set is to achieve high service availability, which is similar to the sentinel mode in Redis. 1. Copy set function It mainly provides two functions: 1. When the data is written to the Primary node, copy the data to another Secondary node; 2. When the primary node fails, a ne ...

return of SaltStack component The return component can be understood as the SaltStack system stores or returns the data returned by Minion to other programs. It supports a variety of storage methods, such as MySQL, MongoDB, Redis, Memcache, etc. through return, we can record each operation of SaltStack and provide a data source for future ...

1. return of saltstack component The return component can be understood as the SaltStack system stores or returns the data returned by Minion to other programs. It supports a variety of storage methods, such as MySQL, MongoDB, Redis, Memcache, etc. through return, we can record each operation of SaltStack and provide a data source for future l ...