Node.js

Introduction When working with Mongoose, a data modeling library for MongoDB and Node.js, developers often need to retrieve documents based on certain criteria. One common task is to find documents where a particular field contains a......

The Problem The E11000 duplicate key error is a common issue that arises when working with Mongoose in a Node.js application, particularly concerning the indexing of documents in a MongoDB collection. This error occurs when a write......

Introduction When developing applications using Node.js with a MongoDB backend, there may come a time when you need to access multiple databases. Leveraging the popular ODM (Object Document Mapper) library Mongoose makes handling......

Introduction Managing data in a NoSQL database like MongoDB often entails operating on array fields in documents. Mongoose, as an Object Data Modeling (ODM) library for MongoDB and Node.js, provides various methods to manipulate......

Introduction This tutorial guides you through the process of transforming Mongoose documents to plain JavaScript objects. When working with Mongoose, the ODM (Object Document Mapper) for MongoDB, the records retrieved from the database......

Introduction This tutorial aims to provide an in-depth overview of the $match operator in Mongoose, which is an ODM (Object Data Modeling) library for MongoDB and Node.js. The $match operator is used primarily in aggregation to filter......

Let’s explore some different techniques to retrieve the latest document in a MongoDB collection by using Mongoose. Solution 1: Using Sort and Limit This solution involves sorting the documents by their creation date in......

Introduction When working with MongoDB through Mongoose in a Node.js application, you might come across a situation where you need to fetch the oldest document from a collection. This could be for record-keeping, analytics, or some......

Fetching a random document from a Mongoose collection is a common requirement and there are multiple ways to achieve it. This article discusses three methods, highlighting the pros and cons of each. Aggregation Pipeline This......

Introduction Finding random documents in a MongoDB collection turns what would be a simple operation in SQL into a more challenging task in the context of NoSQL databases. Mongoose, a MongoDB object modeling tool for Node.js, does not......

Introduction Mongoose is a MongoDB object modeling tool designed to work in an asynchronous environment such as Node.js. The $lookup stage in MongoDB’s aggregation pipeline is akin to a SQL JOIN, allowing documents from one......

Introduction When dealing with a database, managing related data is an essential aspect of maintaining consistency within the data model. In MongoDB, a non-relational database, the Mongoose ODM (Object Data Modeling) library provides a......