The idea of serverless architecture & computing for web or mobile apps isn’t brand new. It has been around for a couple of years, but somewhat low key. Serverless applications are definitely a real thing and look promising with respect to corporations like Microsoft, Amazon and Google investing in them. The year 2019 might be the time for Serverless Computing to shine as it is gradually grabbing more attention by Tech firms seeking cost-effective routes to manage their web pages and/or mobile apps.  

What is Serverless Computing?

It is basically a phenomenon branching from Cloud computing where the cloud provider (3rd party) acts as a server. This implies a virtual server that does not require any management and maintenance on the user’s behalf. In simple words, a server actually exists, though it is simply hidden from plain sight.

How are Serverless Apps Better?

Delivering an application to the market usually takes a long route. Serverless provides a short-cut by erasing the need for renting/purchasing an infrastructure – which means setup and capacity are no more a headache. Assemblage and deployment of an application becomes an effortless fleeting task. Time saved can be utilized better by concentrating on the design and development of your product.

Serverless converts your fixed expenses into variables. When you rent or purchase a physical server, you are paying for it 24/7 because fixed costs are independent of the output. On the other hand, Serverless provides a pay-as-you-go computing system. This means that you’ll only pay for what’s actually being consumed. Serverless computing corresponds with activity in an application, thus resting during intervals.

All functions of your app are controlled separately, rather than being treated as a whole. Due do this arrangement when an API delivers a request, only specific elements will be triggered rather than the whole system. As a result, you will not be sending back unnecessary data to the end user, thereby greatly reducing wastage of code.

Overall, development and operational expenses become rather irrelevant because the back-end is majorly automated. Even scaling of your application is handled by a 3rd party, so you don’t need to make adjustments manually. Developers can run code for every type of application and easily integrate with all kinds of cloud products. Serverless offers rich templates and sample code libraries, so ultimately lesser code needs to be fed.

AWS SAM

AWS (Amazon Web Services) SAM (Serverless Application Model) is a wonderful platform for programmers who are keen to work on a serverless application. It is powered by AWS Cloud Formation and can be used to articulate the theory. It is created to provide a foundation to assist the planning, development and execution of serverless apps.  

AWS SAM Resources:

  • Lambda – It allows developers to run code in the absence of an Admin Server. All they have to do is upload code which may comprise Java, Python, Go, Node.js or C#. Applications can be set-up via a few clicks and showcase high-quality performance.
  • API Gateway – It is applicable for deploying and monitoring the front-end of serverless apps. In combination with back-end Lambda it creates a secure and advanced user interface.
  • DynamoDB – It is package service which helps optimize your app by providing flexibility in scaling, self maintenance and ease to access.
  • AWS Repository – An open source for code samples and components required to build serverless applications.

AWS does not charge anything for the first 1 million requests and first 400,000 GB-seconds triggered on your app per month. $0.20 are charged for the next million requests and son on. Also, $0.00001667 for every extra GB-second, but the price varies in accordance to the memory you allocate to a function. So let’s say your website/app receives 10 million requests on a day, you’ll roughly pay $2; zero requests = $0 and 100 million requests will almost equal $20. This is quite cheap compared to traditional servers.

Serverless platforms like AWS enables all your application components to function individually, which in return promotes service stability. If one task malfunctions, it will not affect the rest. Web and Mobile apps are both qualified for construction in a Serverless environment as it can be integrated with commonly used computer languages or frameworks, such as Node.js, Python and Java.

Concerns:

  • Serverless computing is applicable but not necessarily feasible for every kind of application. Discuss the paradigms of your business with an AWS expert before you hop on.
  • Pricing of cloud components can be very confusing for newcomers. It is best to figure it out beforehand by referring to an AWS consultant.
  • In some cases, the smaller services of Serverless are harder to debug and keep track of compared to bundled applications,
  • With a Serverless platform you are likely to be exposed to greater malicious content and need more effective precautions.
  • Migration to serverless could be difficult and demand major alterations to your current database for adjusting in the cloud ecosystem.
  • As serverless apps are largely managed by a third party, you have minimal control.

 

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