AWS Disaster Recovery Intro
1. AWS Disaster Recovery Introduction
Disaster Recovery (DR) is about preparing for and recovering from a disaster. Any event that has a negative impact on your business continuity or finances could be termed a...
Some good subreddits on Reddit
Reddit is an American social news aggregation, web content rating, and discussion website. Registered members submit content to the site such as links, text posts, and images, which are then voted...
curl vs wget
What both commands do
both are command line tools that can download contents from FTP, HTTP and HTTPS
both can send HTTP POST requests
both support HTTP cookies
both are designed...
How to uniquely identify linux machines
When programming software that cooperates with software running on behalf of other users, other sessions or other computers it is often necessary to work with unique identifiers. These can be bound...
Tuning Linux server for MongoDB
For AWS Load Balancer, you can select the appropriate load balancer based on your application needs. If you need flexible application management, we recommend that you use an Application Load Balancer....
Relational vs non-relational databases
In the world of database technology, there are two main types of databases: SQL and NoSQL—or, relational databases and non-relational databases. The difference speaks to how they’re built, the type of...
AWS Certified Solutions Architect – Associate Preparation Guide
The AWS Certified Solutions Architect Associate exam is intended for individuals who perform a Solutions Architect role. This exam validates an examinee’s ability to:
Identify and gather requirements in order to define...
What is DevOps?
DevOps isn’t a tool, it is a method to combine Dev (Development) and Ops (Operations) in the entire service lifecycle, from design through the development process to production support.
Using DevOps helps...
What is different between JDK, JVM and JRE
JDK
Java Development Kit
Core component which provides tools, executables, and binaries required to compile, debug and execute a Java program
Platform specific software
JVM
Heart of Java programming language
Convert bytecode...
Java Access Modifiers
Java Access Modifiers with Class Member
We can have all the four access modifiers for class member variables and methods. However, member access modifier rules get applied after the class level access...