MongoDB upsert example using Mongo Shell and Java Driver
MongoDB upsert option is used with update method which creates a new document if the query does not retrieve any documents satisfying the criteria. The default value for this option is false. The...
View ArticleMongoDB remove example using Mongo Shell and Java Driver
MongoDB remove method removes a single document or all the documents present in the collection or the documents with specific criteria. The syntax for remove is query: specifies the documents to be...
View ArticleMongoDB Map Reduce example using Mongo Shell and Java Driver
Map Reduce is a data processing technique that condenses large volumes of data into aggregated results. MongoDB mapreduce command is provided to accomplish this task. Lets consider the following...
View ArticleMongoDB authentication configuration example using Shell and Java Driver
Authentication enables user to verify identity before connecting to the database. At first, a user with admin privileges should be created and then additional users can be added. Let’s now create a...
View ArticleMongoDB Tutorial – installation, example projects, integration with Servlet,...
MongoDB is one of the most widely used NoSQL database. Recently I have written a lot about MongoDB that includes installation on various Operating Systems and then using some common functions through...
View ArticleJSF and JDBC Integration Example Tutorial
Java Server Faces can be connected to database to perform operations on the data using JDBC API. Lets consider an example of pulling the data from a Car table residing in the database and display them...
View ArticleMongoDB remove example using Mongo Shell and Java Driver
MongoDB remove method removes a single document or all the documents present in the collection or the documents with specific criteria. The syntax for remove is db.collection.remove( <query>, {...
View ArticleMongoDB Map Reduce example using Mongo Shell and Java Driver
Map Reduce is a data processing technique that condenses large volumes of data into aggregated results. MongoDB mapreduce command is provided to accomplish this task. Lets consider the following...
View ArticleMongoDB authentication configuration example using Shell and Java Driver
Authentication enables user to verify identity before connecting to the database. At first, a user with admin privileges should be created and then additional users can be added. Let’s now create a...
View ArticleMongoDB Tutorial
Welcome to the MongoDB tutorial index post. MongoDB is one of the most widely used NoSQL database. MongoDB Tutorial Recently I have written a lot on MongoDB tutorials that includes installation on...
View ArticleJSF Database Example – MySQL JDBC
Welcome to JSF Database example. We will use JSF with MySQL database and use JDBC for our example. Java Server Faces can be connected to database to perform operations on the data using JDBC API........
View ArticleSpring Boot MongoDB
Welcome to Spring Boot MongoDB example. Spring Boot is the easiest way to spin a spring project quickly and MongoDB is the most popular NoSQL database. Let’s see how to integrate spring with MongoDB...
View ArticleHow to Install MongoDB on CentOS 7
In this article, we dive in and see how you can install MongoDB on CentOS 7. MongoDB is a free, flexible and opensource NoSQL database, different from the regular SQL databases like PostgreSQL and...
View ArticleHow to set up MariaDB Master-Slave replication on CentOS 7
The concept of database replication ensures that data is copied across multiple servers from a Master server. This provides data redundancy and ensures that data is not lost in the event that the...
View ArticleSQL Injection in Java and How to Easily Prevent it
What is SQL Injection? SQL Injection is one of the top 10 web application vulnerabilities. In simple words, SQL Injection means injecting/inserting SQL code in a query via user-inputted data. It can...
View ArticleWhat is NoSQL Database?
Most of you have already heard of the term NoSQL Database and when you try to do a Google search of it, it’s not really clear in terms of what exactly this entire concept is..... The post What is NoSQL...
View ArticleHow To Build a Real-time REST Application with FeathersJS
Introduction Feathers is a minimalistic real-time framework for web applications built over Express. With Feathers, in addition to using middleware, you can get real-time, RESTful services and ORM...
View ArticleHow To Lazy-Load Images with Intersection Observer
Introduction Images take up a high percentage of the size of your website. Some of these images are below the fold, which means they are not seen immediately by the website visitor. They will need to...
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How To Install Elasticsearch, Logstash, and Kibana (Elastic Stack) on Ubuntu...
Introduction The Elastic Stack — formerly known as the ELK Stack — is a collection of open-source software produced by Elastic which allows you to search, analyze, and visualize logs generated from any...
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22 Best Visual Studio Code Extensions for Web Development
Want to install all of the extensions listed below at once?! Check out The Web Development Essentials Extension 1. Debugger for Chrome Believe it or not, debugging JavaScript means more than just...
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