MongoDB

Mongoose is an ODM (Object Document Mapper) that allows users to conveniently create and manage data in MongoDB. While it is possible to manage data, define schemas, etc. using MongoDB APIs, it is quite difficult to do so. Hence, Mongoose has made lives easier. When using Mongoose sometimes errors can occur and we don’t know […]

In MongoDB, we store a large number of documents that need to be deleted occasionally. To delete all documents based on a particular query, we have a function findManyAndDelete() which is used if you want to delete multiple documents or delete documents in bulk. Suppose, you want to delete a single document inside a collection,

MongoDB provides a variety of operators that are suitable for various purposes such as aggregation pipeline, text search, geospatial query, array manipulation, etc. They are highly advanced, flexible, and easy to understand, allowing applications built on MongoDB to perform tasks beyond basic CRUD operations. This is undoubtedly one of the reasons why MongoDB is so

NoSQL databases have become popular nowadays, providing the flexibility to design your schema to store data of different data types in a specific order. It is preferred over SQL when building large-scale applications and mainly with Node.js. If you want to integrate the MongoDB database into your Node.js project, you can do it in two

The distinct() function in MongoDB is used to retrieve distinct values. However, it has a problem. This function is a very basic function, it can only select distinct values for one field at a time. So, if there is a need to retrieve the complete set of records matching a specified query, it cannot be

MongoDB aggregation allows developers to perform complex operations while working with data stored inside a collection of a MongoDB database. One of the operations is the “group by” operation, i.e. $group, which is used to group documents based on the value of the field specified and count the number of documents in each group In

A MongoDB cluster is used to denote a replica set of a collection of datasets distributed across multiple servers to speed up the overall processing during read and write operations. In this tutorial, we will learn about clusters in MongoDB, database clustering, the benefits of database clusters and the types of database clusters in detail.

In this tutorial, we will learn about sharding in MongoDB. It is time we learn an intermediate-level topic. Sharding in MongoDB is one such topic. Now, sharding in layman’s terms means that mechanism that stores data on multiple machines. This is done to feed the growing demand of the growth of data. Let us dive

In this tutorial, I will cover the $and operator in MongoDB. So, the $and operator performs an AND operation on the given array of expressions. It eventually selects ALL the documents that matched the query. This guide aims to provide readers with a detailed walkthrough on different kinds of examples on how to use the

In this guide, I will explain how to use the getIndexes() Function in MongoDB. A list of documents describing the existing indexes in the collection includes hidden indexes, and is returned as an array by the getIndexes() function. This guide aims to throw light on a examples that illustrate the usage of the getIndexes() function.