Serverless Java with Amazon Web Services (AWS)

Serverless is the next iteration in cloud management. First, we let go of having physical hardware servers and moved all of our servers into the cloud because, hey, why bother managing all that hardware? This created cloud infrastructure providers that resulted in behemoths like Amazon and Google. Now, they’re saying, why bother managing a server at all? What you really want to do is run code, right? Serverless is an architecture where code is run in a managed service container that is totally isolated from server-level concerns like operating systems, web servers, and updates.

In truth, this creates a whole host of trade-offs. The promised benefits are simplicity, automatic scaling, and low cost. The idea is that to create an application, all you have to do is upload your code and you’re off! Because the service provider is managing provisioning for you automatically, scaling is fast and transparent. And because you’re only paying for time you actually use - instead of paying a fixed cost - you save money. Sounds perfect. Indeed, it sounds like a great sell to managers and corporate executives. But while in some use cases, serverless is fantastic, it’s not that simple.

For example, Amazon AWS is a fantastic platform in some ways, but I doubt too many people have accused it of being “simple.” It’s an expert platform made for technical specialists and engineered to provide maximum control. This results in a bewildering array of options and documentation that sometimes leaves me aching for a simple command prompt and a few “sudo apt-get install” commands. More than a few startups have simply traded their Linux gurus for AWS gurus.

The benefit of simplicity can be offset by the cost of learning how to interact with the service provider’s system. Instead of interacting with well known and proven technologies like Linux and Apache or Nginx, you’re working with a new system like Amazon or Google’s cloud infrastructure. Serverless functions run as private functions that have to go through Gateway APIs to make them public, adding another level of complexity. As the complexity of the serverless application grows, the complexity of these proprietary interactions grows. This has two effects: 1) your team is having to become an expert in a totally new system, often every bit as complex as the system they already knew; and 2) you’re becoming increasingly locked into whatever cloud provider you chose just as the benefits of even using a serverless environment diminish (a bit like one of those finger-trap toys).

What are the ideal use-cases for serverless? My thought is: discrete units of code that are not likely to grow greatly in complexity but that have unpredictable or intermittent usage (thus maximizing the benefit from the pay-as-you-go model) or have the potential to vary greatly in demand (thus benefiting from the great scaling capacity of serverless technologies).

Serverless functions should also be stateless (there’s no disk to write to) and have relatively short running times. If you need to write to disk, serverless is out - although, with databases, cloud logging, and cloud file repositories, it’s hard to imagine too many places where this is a huge problem. Further, serverless systems are optimized for short-running code. You start to lose the cost-benefit if your code runs for long and most of the providers have maximum execution times between 300 and 900 seconds.

• Choose Between Java Serverless Options
  

• Sign Up for AWS Account with Billing
  

• Create AWS Access Keys
  

• Install and Configure AWS CLI
  

• Create AWS Role
  

• Download the Project from GitHub
  

• Configure Okta JWT Auth
  

• Create the Lambda
  

• Create an AWS API Gateway
  

• Test Your API Gateway URL
  

• Generate a JWT Token
  

• Test the Protected Serverless Function
  

#serverless #aws #java #cloud #web-development

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AWS Development Company | Amazon Web Development Services

PixelCrayons provides its clients with best-in-class AWS development services in India. They are backed by a team of 500+ professionals and help to reduce the operational overhead and risk of the organisations.

AWS development services aid in automating simple activities, such as to request change, monitoring, patch management, security, and backup services. Our services are efficient to provide the full-lifecycle services to establish, run, plus support IT infrastructure.

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How to Deploy a Java Springboot App with MYSQL in AWS for Free

This tutorial explains how to deploy a Java Springboot app in AWS Free Tier.

Previously, we created a login system with Java springboot, deployed it in Digital Ocene and created UI in Vue.js too.

Now, I am creating an ecommerce app. I wanted to deploy it for free in AWS and explore Devops more. AWS is perfect for that, as most of the popular sites like Netflix, Linkedin, Facebook all use it, as it is best for scaling for billions of people. Let’s get started.

#aws #aws-services #amazon-web-services #amazon #aws-blogs #java #springboot

How to Install OpenJDK 11 on CentOS 8

What is OpenJDK?

OpenJDk or Open Java Development Kit is a free, open-source framework of the Java Platform, Standard Edition (or Java SE). It contains the virtual machine, the Java Class Library, and the Java compiler. The difference between the Oracle OpenJDK and Oracle JDK is that OpenJDK is a source code reference point for the open-source model. Simultaneously, the Oracle JDK is a continuation or advanced model of the OpenJDK, which is not open source and requires a license to use.

In this article, we will be installing OpenJDK on Centos 8.

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Wondering how to upgrade your skills in the pandemic? Here's a simple way you can do it.

Corona Virus Pandemic has brought the world to a standstill.

Countries are on a major lockdown. Schools, colleges, theatres, gym, clubs, and all other public places are shut down, the country’s economy is suffering, human health is on stake, people are losing their jobs and nobody knows how worse it can get.

Since most of the places are on lockdown, and you are working from home or have enough time to nourish your skills, then you should use this time wisely! We always complain that we want some ‘time’ to learn and upgrade our knowledge but don’t get it due to our ‘busy schedules’. So, now is the time to make a ‘list of skills’ and learn and upgrade your skills at home!

And for the technology-loving people like us, Knoldus Techhub has already helped us a lot in doing it in a short span of time!

If you are still not aware of it, don’t worry as Georgia Byng has well said,

“No time is better than the present”

– Georgia Byng, a British children’s writer, illustrator, actress and film producer.

No matter if you are a developer (be it front-end or back-end) or a data scientist, tester, or a DevOps person, or, a learner who has a keen interest in technology, Knoldus Techhub has brought it all for you under one common roof.

From technologies like Scala, spark, elastic-search to angular, go, machine learning, it has a total of 20 technologies with some recently added ones i.e. DAML, test automation, snowflake, and ionic.

How to upgrade your skills?

Every technology in Tech-hub has n number of templates. Once you click on any specific technology you’ll be able to see all the templates of that technology. Since these templates are downloadable, you need to provide your email to get the template downloadable link in your mail.

These templates helps you learn the practical implementation of a topic with so much of ease. Using these templates you can learn and kick-start your development in no time.

Apart from your learning, there are some out of the box templates, that can help provide the solution to your business problem that has all the basic dependencies/ implementations already plugged in. Tech hub names these templates as xlr8rs (pronounced as accelerators).

xlr8rs make your development real fast by just adding your core business logic to the template.

If you are looking for a template that’s not available, you can also request a template may be for learning or requesting for a solution to your business problem and tech-hub will connect with you to provide you the solution. Isn’t this helpful 🙂

Confused with which technology to start with?

To keep you updated, the Knoldus tech hub provides you with the information on the most trending technology and the most downloaded templates at present. This you’ll be informed and learn the one that’s most trending.

Since we believe:

“There’s always a scope of improvement“

If you still feel like it isn’t helping you in learning and development, you can provide your feedback in the feedback section in the bottom right corner of the website.

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How to Upload to Amazon S3 via AWS CLI and NPM scripts

Static websites are a brilliant way to create performant sites. My website is built using Gatsby and hosted on Amazon S3. I have created a simple script to help you quickly upload your site to S3 by running one simple command in your project terminal.

Prerequisites

Before we start, you must ensure that you have completed the following:

• Install AWS CLI (Amazon Web Services Command Line Interface) on your machine.
• Create a bucket in Amazon S3 (this is where we will be uploading our project files to).

This guide assumes that you have some familiarity navigating the AWS Console and each Amazon Web Service.

#aws-s3 #npm #amazon-web-services #amazon #aws #cloud #aws-services