Do you know the Serverless Development and Deployment Best Practices?

1
Serverless Development and Deployment Best
Practices
2

• Serverless has streamlined the application
  development process so much that it has made up
  the minds of many, including you, to go
  serverless. However, simply determining to go
  serverless is not adequate.   
• When it comes to serverless architecture, you
  need to follow some structured practices in order
  to deploy applications for rapid application
  development, maintain application security, and
  minimize bugs.    
• DataVizz has been working on serverless for quite
  a few years. And, with the knowledge we gained in
  the process, we have stepped ahead to list the
  best practices of Serverless Development as well
  as Deployment.   
• If you have weighed serverless as a serious
  business, following these best practices would
  make a significant contribution to it.   

3
Serverless Application Development

• Serverless computing implies a method wherein
  developers get to build applications without
  having to manage the infrastructure.  
• The face of application development has not only
  changed but also enhanced with serverless
  technologies. When using a serverless model, you
  can   
• Eliminate server issues   
• Write shorter codes   
• Increase core development period

4

• In a nutshell, serverless lets developers focus
  more on writing codes and not worry about the
  maintenance and management of servers. Even so,
  servers are still used, the developers need not
  look after the infrastructure. Once the code is
  written, the cloud service provider shall look
  after the rest.
• In order to develop serverless applications, the
  developers need to write serverless codes without
  provisioning a server, ensuring functionality,
  maintaining server uptime, and creating test
  environments. All these tedious responsibilities
  are on the shoulders of the service providers.   
• It wouldnt be surprising to say that Serverless
  is one of the oldest, yet, robust deployment
  frameworks for serverless applications.  
• Building applications using Lambda facilitates
  speedy application development. Unlike in the
  server-based model, as mentioned earlier, you can
  write a small percentage of codes.     

5
What is Serverless Framework?

• The Serverless Framework is an open-source
  framework that is written using Node.js. The
  first framework developed for building
  applications is Serverless. It was built on AWS
  Lambda, which is a serverless computing platform.
  AWS Lambda is a part of the Amazon web
  Services.    
• The serverless app aids lambda functions to
  accomplish tasks as well as supports all runtimes
  within the selected cloud service provider. The
  serverless framework aids you in developing as
  well as deploying AWS Lambda functions with the
  AWS infrastructure resources.   
• If you ask how the Serverless Framework is
  different and above the rest, heres the
  answer   
• Serverless Framework not only manages your codes
  but also your infrastructure   
• Serverless Framework supports more than one
  language such as Java, Python, Node.js, and so
  on.   

6
Best Practices

• Now that you are through Serverless Development
  and Serverless framework, you are all set to
  learn the best practices of Serverless. However,
  remember that the best practices may differ
  because of different operating models and many
  other reasons.   

For Development   
Let us first begin with the best practices for
serverless development   
Go Local foremost
Starting serverless app development can bag you a
good amount of time. On the contrary, when Lambda
starts getting intricate, you might have to make
several optimizations to the functions code as
well as configuration.          
7

• Now, every tweak you make eventually increases
  the waiting period for code deployment and lets
  the stack go live. And, as a developer, you have
  to save your time, as much as possible (We dont
  even need to say that).   
• Therefore, instead of running your development
  cycle as 1. Save 2. Open Console 3. Deploy 4.
  Wait 5. Refresh 6. Wait, you can consider
  switching the cycle to   
• Save   
• Build   
• Refresh   
• Moreover, the lambdas, API endpoints, and many
  more can be cloned in the local Docker container
  by the AWS Serverless Application Model.

8
Practice 1 Function at a time

• Did you know that single function proxy has
  isolated issues and that it does not scale well
  with HTTP?   
• Now that you know, heres something more. When
  the function of a set of routes is sternly joined
  to a single table, it gets detached from the
  serverless application.    
• You might have got one additional layer of
  complicacy. However, if it helps in sealing-off
  issues and errors while scaling your serverless
  application, isnt it worthwhile?   

9
Quit Overwriting Codes

• If you are new to the Serverless Framework,
  heres something you should know   
• In a Serverless Framework, JavaScript is the
  supreme language.   
• Therefore, when you write codes in JavaScript,
  they shall be interpreted as well as executed in
  the best possible way. If you face a performance
  issue, do understand that overwriting codes is
  not the way to solve it. Rather, you can   
• Reverse useful error data   
• Pause loops   
• Merge several requests   
• Execute Load Testing   

10
For Deployment   

• In a serverless environ, you may have to deal
  with intricate applications. Besides, you may not
  be advised of the dependencies that failed to
  perform a function extensively, within your
  application.    
• In order to know the optimal timeout value, you
  can consider load testing your lambda functions.
  It can also help you determine memory
  allocation.    
• Load testing can potentially aid you in pointing
  out the potential issues that could be critical
  in sustaining application uptime.   

And now we would detail the best practices for
serverless deployment 
11
Deal well with Secrets

• Your applications must be able to securely deal
  with database credentials. API keys, or other
  such secrets. And, when we term it as dealing, it
  implies storing as well as accessing the secrets
  effectively.    
• Although there are many components of this, some
  of the most vital ones are   
• Practising unique secrets at different
  application stages (at least wherever
  applicable)   
• Confining accessibility to secrets   
• Protecting secrets away from source control   
• Employing environment variables for configuration
  (with Lambda)   
• Moreover, you can add various parameters thatll
  let you configure secrets across application
  stages, AWS accounts, and services.    

12
Limit Deployment Period

• Did you know that you can lock your deployments
  for a definite period? Irrespective of the time
  range you choose, and the reason you wish to lock
  it, you can inspect your readable serverless
  file, as well as the Cloud Formation
  templates.   

Define Stages and Regions  Conventions help
developers understand a set of standards while
learning about other parts of a system. One such
universal convention is that there is a separate
place for code and another one for the developers
that are not ready for the customers yet. These
are known as stages. With stage configuration you
can determine the region stages or AWS account
deployment, the parameters and secrets used, etc.
It lets you block development stage deployments,
and do much more to support your requirements.    
13
Name and Describe Functions
While managing stages and regions, naming and
describing functions in your infrastructure can
do wonders. By doing so, you can ensure that your
lambda functions have a consistent name, stage,
and function. Also, it will help you find
relevant functions, provided they belong to the
same AWS account. In simple terms, when you name
and describe the functions, youll precisely know
what to call the function you are looking for.  

• If you are working with a team that is scattered
  across boundaries, the default AWS region for
  different developers would be different. These
  differences can potentially create issues in your
  coding or might include other such limitations.
  To prevent this from happening, you along with
  other developers can employ a single region or a
  division of regions, as per your requirements.
  You need to specify the allowed regions by which
  you are ensured of servicing to that specific
  region or list of regions.   

14
Food for Thought   

• Employing a Serverless Framework for developing
  applications is the contemporary course of
  application development. Serverless applications
  take away the burden of managing servers from the
  developers shoulders and shall allow you to
  focus on your application code. Now that we
  covered some of the best practices for developing
  and deploying serverless applications, you would
  be pumped up to get your hands on serverless.
  Before you start, know whether you should go
  serverless or you should not, right here.

Contact Us  https//www.datavizz.in