Tuesday, November 28, 2017

Serverless and Codeless Cloud Native Applications !

Welcome to the future of cloud, Welcome to Serverless and Codeless Cloud Native Applications!!!

In this blog I will provide overview, available options, how to build secure eCommerce website, advantages & challenges of Serverless and Codeless Cloud Native Applications, along with a live example.

Serverless computing is a cloud computing execution model in which the cloud provider dynamically manages the allocation of machine resources. Pricing is based on the actual amount of resources consumed by an application, rather than on pre-purchased units of capacity such as VM / Containers etc. It is a form of utility computing. Serverless computing still requires servers. The name "serverless computing" is used because the server management and capacity planning decisions are completely hidden from the developer or operator. Serverless code can be used in conjunction with code deployed in traditional styles, such as microservices. Alternatively, applications can be written to be purely serverless and use no provisioned services at all. Key benefits of a serverless architecture include automatic scale up and down in response to current load and the associated cost model that charges only for milliseconds of compute time used when running.

There are several options available for Serverless CNA's. Most popular and noteable are

Openwhisk - OpenWhisk is a serverless, open source cloud platform that executes functions (called actions) in response to events (called triggers) without developer concern for managing the lifecycle or operations of the containers that execute the code.



AWS Lamda AWS Lambda lets you run code without provisioning or managing servers. You pay only for the compute time you consume - there is no charge when your code is not running. With Lambda, you can run code for virtually any type of application or backend service - all with zero administration. Just upload your code and Lambda takes care of everything required to run and scale your code with high availability. You can set up your code to automatically trigger from other AWS services or call it directly from any web or mobile app.

Build Secure eCommerce website for free!
So the question is, can we build secure e-Commerce web site without any Developer, QA, Portal Admin, DBA, sys admin and Servers? Yes, this is possible! Here is what all you need and what all you can use to build your eCommerce site for almost free!

Website : Create your static website in Jakyll and deploy in Github for free !
Access Management : Plugin cloud based identity management solutions such as userapp.io / firebase etc
Cloud based Database : Plugin free firebase database at the back end to store your data
eCommerce functions : Plugin SnipCart into your website for shopping cart and payment gateway  functionality
Digital Delivery: Plugin in SendOwl and SendGrid for digital goods delivery and marketing and you are done !

Advantages 

  1. No need to own anything - run for almost free till your business pickups up 
  2. Work on your product features rather than building / managing your website 
  3. No dependency on one vendor / Multiple options for similar services in market


Disadvantages

  1. Multiple plugin's and inseparability 
  2. Gradually you may have to start paying as and when you exhaust free limits and start looking at cost optimization using other means.


And here is one example, I built mobile app/site for my son, in 6 hours without Developer / QA /  PM / IDM  / Portal admin / DBA / Sys admin and Servers! Check this out ! 

URL : https://goo.gl/wb2bNK
User name : testing
Password : test

Enjoy, and welcome to the future of Cloud !

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