Microservices Architectures - Quick introduction to Cloud - Why, What and How?


Image


In this article, we focus our attention on the cloud. Why do we need the cloud?

You will learn

  • What is Cloud?
  • Why do we need the Cloud?
  • How does cloud provide auto scaling?
  • What are the advantages of Cloud?
  • What are the challenges with Cloud?

Free Courses - Learn in 10 Steps

Introduction to Cloud, Microservice - Challenges and Advantages

This is the first article in a series of five articles on cloud and microservices:

The Need For The Cloud

Loads on applications is not consistent throughout the year:

  • Consider a startup company, which could have a potential to grow very fast.
  • Imagine an online shopping portal, whose customer load varies throughout the year.
  • Other online business portals, such the insurance sector, which have peak load at a particular time of the year, and very little load during other times.

If you provision your infrastructure to be able to handle the peak system lead, what would that infrastructure be doing the rest of the time?

Most of it would just be sitting idle, watching the fun.

That is exactly the problem cloud wants to solve.

Cloud intends to make it easy to provision infrastructure when you need, and just as easy to release it when you don’t. This feature of the cloud has created a lot of buzz around it, over the last decade or so.

Building Applications For The Cloud

The thing is, you cannot take any application and just put it on the cloud.

A lot of things need to be right, in order to make an application cloud-enabled. They are known as cloud-native applications.

There are best practices in place to develop such cloud-native applications, also known as the twelve-factor apps. We discuss those in a seperate article.

Advantages Of The Cloud

Auto Scaling and Agility

There is no longer a need to statically provision infrastructure to ensure availability for peak loads. You can do that on-demand.

Cost Reduction

There are significant cost reductions with using infrastructure from the cloud, because you only use what you need for the duration you need them.

Scalability And Elasticity

When applications are built well, they can auto scale based on the load.

Reliability

Since your applications are cloud-enabled, they are designed to withstand certain kinds of outages. For example, applications with microservices architecture have fault-tolerance built into them.

Migrating Applications To The Cloud

It is not very straightforward to migrate your application to be cloud-enabled.

The first step is to make them cloud-native. The next decision to make is choosing a platform to migrate the application to. You generally have choice of platforms to migrate to, such as Microsoft Azure, AWS and Google Cloud, among others.

Best Practices

The best practices listed for making applications cloud-native are often termed as 12 factor apps. These capture the experiences of Heroku, with developing cloud enabled applications.

Challenges With Developing Cloud Applications

Security

Security is a major concern, as the infrastructure is not what you own, and it can be dynamically acquired and released.

Application Compatibility

Most applications are not compatible with the cloud. Applications have to enhanced to make them cloud native.

Manifestations Of Cloud

IaaS

Infrastructure as a service is the first level of cloud. Cloud provider only provides the hardware needed to run applications.

PaaS

Platform of service is the next level of cloud, where the cloud provider provides you a platform - an operating system or managed software (databases, programming languages, web application platforms) - on top of the hardware.

SaaS

Software as a Service is the third level of cloud, where the cloud provider offers a software product on the cloud - like Google Docs.

Do check out our video on this:

image info

Summary

In this article, we had a good look at the cloud. We saw that a cloud helps ease the infrastructure management of online businesses by making provisioning dynamic. A cloud could be public, or private. Using a cloud has many advantages to offer, such as agility, cost reduction and reliability.

Best Selling Udemy Courses

Image
Image Image Image Image Image Image Image Image Image

Join 450,000 Learners and 30+ Amazing Courses

350,000 Learners are learning everyday with our Best Selling Courses : Spring Boot Microservices, Spring, Spring Boot, Web Services, Hibernate, Full Stack React, Full Stack Angular, Python, Spring Interview Guide, Java Interview, Java Functional Programming, AWS, Docker, Kubernetes, PCF, AWS Fargate and Azure


Do not know where to start your learning journey? Check out our amazing learning paths:
Learning Path 01 - Spring and Spring Boot Web Applications and API Developer,
Learning Path 02 - Full Stack Developer with Spring Boot, React & Angular,
Learning Path 03 - Cloud Microservices Developer with Docker and Kubernetes,
Learning Path 04 - Learn Cloud with Spring Boot, AWS, Azure and PCF and
Learning Path 05 - Learn AWS with Microservices, Docker and Kubernetes


Subscribe

FREE COURSES



Related Posts

Writing Integration Tests for Rest Services with Spring Boot

Setting up a basic REST Service with Spring Boot is a cake walk. We will go one step further and add great integration tests!

Integrating Spring Boot and Spring JDBC with H2 and Starter JDBC

Learn using Spring Boot Starter JDBC to connect Spring Boot to H2 (in memory database) using Spring JDBC. You will create a simple project with Spring Boot. You will add code to the project to connect to a database using Spring JDBC. You will learn to implement the basic CRUD methods.

JUnit Tutorial for Beginners in 5 Steps

JUnit Tutorial for Beginners in 5 Steps. Setting up a basic JUnit example and understanding the basics of junit.

JPA and Hibernate Tutorial For Beginners - 10 Steps with Spring Boot and H2

JPA and Hibernate in 10 Steps with H2 - Setting up a basic project example with Spring Boot and in memory database H2. Its a cake walk.

Spring Boot Tutorial For Beginners in 10 Steps

Introduction to Spring Boot in 10 Steps. Learn the basics of Spring Boot setting up a basic project example with Spring Boot.

Spring Framework Tutorial for Beginners - Your First 10 Steps

Learn the basics of Spring Framework setting up a very simple example.

JPA and Hibernate Tutorial using Spring Boot Data JPA

Complete journey starting from JDBC to JPA to Spring Data JPA using an example with Spring Boot Data JPA starter project. We use Hibernate as the JPA Implementation.

Creating a Web Application with Spring Boot with JSP

Setting up a basic web application with Spring Boot is a cake walk. We will create a simple web application using Spring Initializr and add JSP features to it.

What is Spring Boot Auto Configuration?

Auto Configuration is the most important feature in Spring Boot. In this tutorial, we will learn important concepts about Auto Configuration with a couple of examples.

Unit Testing Rest Services with Spring Boot and JUnit

Setting up a Basic REST Service with Spring Boot is a cake walk. We will go one step further and add great unit tests to our RESTful Service.


Search