Introduction:Personal access tokens (PATs) are an alternative to using passwords for authentication to GitHub when using the GitHub API or the command line. You can create a personal access token to use in place of a password when you are working with GitHub Operations. To generate the personal access token. Prerequisite:GitHub… Continue Reading How to create a new token from GitHub

In Node.Js applications, we can perform email functionality with the use of “nodemailer” library. Nodemailer:It is a comprehensive email module for Node.js, which makes it easy to send emails from your Node.js application. It supports HTML content, attachments, different transport methods (like SMTP, sendmail, etc.), and more. Transporter:Transporter is an… Continue Reading Email Functionality in Node.Js Application:

What is GraphQL?       GraphQL is a query language for APIs. It was developed by Facebook as a solution to fetch data more efficiently. Why GraphQL:     The Problems with REST In REST APIs, each endpoint will return a specific payload of JSON data. Even if we only need certain fields, it… Continue Reading GraphQL Basics

Introduction: Monitoring memory cache utilization is crucial for maintaining optimal system performance and resource utilization in your IT infrastructure. Nagios, a powerful monitoring system, allows you to track various metrics, including memory cache usage. Prerequisite: Server root login credentials. Step 1: Log in to the Ubuntu or Centos server as… Continue Reading How to set up the custom memory cache monitor on Nagios and clear the memory cache with cronjob?

Testing:It is the process of executing and evaluating the software, whether it meets the customer’s expectations or not. Who does?QA – Quality Assurance member also called as Software tester. Skills required:-Need to be a stickler for details.-Not afraid to critique.-Strong communication skills.-High analytical thinking and concentration.-In-depth domain knowledge.-Love to solve… Continue Reading Quality Assurance: The Gatekeepers of Software Excellence

Introduction A security group controls the traffic that is allowed to reach and leave the instance. It is a set of IP filter rules that define how to handle incoming (ingress) and outgoing (egress) traffic to both the public and private interfaces of an instance. Prerequisites Implementation Step 1: Log into… Continue Reading How to replace a security group of an EC2 instance in AWS