MongoDB Atlas is a multi-cloud database service that simplifies deploying and managing your databases.
To start, you’ll need MongoDB installed on three or more nodes. Each of the nodes in the cluster will need to be able to communicate with the others over a standard port (27017 by default). Additionally, each replica set member needs to have a hostname that is resolvable from the oth...
MongoDB is a popular open source, NoSQL database used to build modern web and mobile applications. Here’s everything you need to know to get started.
As a fully managed AWS database service, Amazon DocumentDB allows you to set up, secure, and scale MongoDB-compatible databases in the cloud without worrying about maintaining and patching database software, manually setting up and securing database clusters, running cluster management software, conf...
In MongoDB, Replication is the process through which we can synchronize the data of a server among multiple servers. In this way, we can provide data redundancy and increase data availability among multiple servers. The replication process always protects a MongoDB database from the loss ...
MongoDB ensures they all succeed or they all fail. Updates across two or more documents must be wrapped in a transaction. MongoDB has supported transactions since version 4.0 but a multi-serverreplica setor sharded cluster is required. The example installations below use a single server so trans...
Scalability.A core function of MongoDB is its horizontal scalability, which makes it a useful database for companies running big data applications. In addition, sharding lets the database distribute data across a cluster of machines. MongoDB also supports the creation of zones of data based on ...
MongoDB 使用JSON(JavaScript ObjectNotation)文档存储记录。 JSON数据库语句可以容易被解析。 Web 应用大量使用,NAME-VALUE 配对 BSON格式 BSON是由10gen开发的一个数据格式,目前主要用于MongoDB中,是MongoDB的数据存储格式。BSON基于JSON格式,选择JSON进行改造的原因主要是JSON的通用性及JSON的schemaless的特性。
availability, using a replication facility called replica set (a group of MongoDB servers that maintain the data set thus providing automatic failover, data redundancy, and availability). There is also support for horizontal scalability where sharding distributes data across a cluster of MongoDB ...
To connect to a sharded cluster, specify the mongos instance or instances in the URI connection string. In the following example, the connection string specifies the mongos instances running on localhost:50000 and localhost:50001 . const MongoClient = require('mongodb'). ...