Know how serverless java is possible?

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What Server less Java Means for Developers
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INFORMATION

• Server less doesnt mean there are no servers.
  Its the first misnomer that should be explained
  when looking at this technology. 
• Server less simply means its not your server.
• As far as youre concerned, its server less
  because someone else owns and manages the server.
• That someone else takes care of setup,
  infrastructure, scaling, and anything else
  connected to the servers.
• Theres no special language associated with
  server less either.
• If another language is more familiar, most
  providers let you use whichever programming
  language you prefer.

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• Also known as a function of a service or FaaS,
  server less gets this alternate name because of
  where you do the work.
• If you think of an application being generated in
  layers, starting with the very root of the
  infrastructure, then FaaS is just the very top
  layer.
• Everything below the application layer is part of
  the infrastructure, and is handled by someone
  else. Youre only creating at the top.
• The impact of server less for developers is
  highly beneficial.
• By eliminating the more time-consuming part of
  their job, managing servers, theyre freed up to
  work on creating the final product.

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SHIFTING FOCUS 

• When a developer doesnt have to worry about the
  basic setup of a system, they have more time to
  devote to other areas of their project.
• When the underlying infrastructure has gone
  server less, and someone else is handling that
  aspect of a project, a developer can focus more
  on the code necessary to complete the
  application. 
• All you have to do, as a developer, is write the
  functions and applications that use those
  functions. 
• This extra time to focus on the end product then
  leads to a shorter development time.

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IMPROVING ACCESS

• Once youre ready to deploy, server less systems
  give you immediate scalability.
• If one day you have five users, but the next day
  you launch to thousands, you wont have to worry
  about whether or not the underlying
  infrastructure can handle the jump. It can.

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MOVING FASTER 

• With the ability to complete projects faster
  since maintaining the infrastructure is no longer
  taking up the developers time, a ripple effect
  occurs.
• Faster development and faster testing enables
  faster innovations to take place.
• New iterations of your initial application can
  get completed and released faster as well,
  allowing you to provide users with a superior
  product thats always at the forefront of new
  developments.
• New ideas can get tested on a much faster
  schedule as well since each idea no longer needs
  its own server set up first.
• The infrastructure for testing is already there
  and waiting for you to use immediately.

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CUTTING COSTS 

• When you own the server your application runs on,
  youre paying for that web server regardless of
  whether or not your applications are active.
• If no requests are coming in to engage with your
  application, youre still footing the bill.
• This can end up being a costly prospect,
  especially when compared to the number of users.
• A low level of engagement can bring down the
  return on your investment (ROI.) Running your
  application server less, you only pay when the
  code actually runs.

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• This can greatly reduce operating costs because
  you no longer need to spend the money on the
  server itself or the n people managing the
  server.
• Instead, personnel will manage a cloud
  environment, which is a much easier job.
• Also Red 5 Key Software Testing Steps

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WORKING WITH JAVA IN A SERVERLESS ENVIRONMENT 

• For Java developers, there may be a little
  hesitation when it comes to working in a server
  less environment. 
• Firstly, Java Functions can start a little slow
  and take up a lot of memory.
• The time impact to load is usually not more than
  a few seconds, but that can matter in a highly
  competitive situation. 
• Technology like GraalVM, for example, addresses
  these Java-based pain points to help code run
  faster.
• It compiles Java byte code to native images. Used
  ahead of time  of compilation, the dependency
  graph is built before starting the JVM so start
  up happens faster.
• With a smaller size and a faster load time, the
  issues with Java wont feel be as impactful for
  code selection when working in a server less
  environment.

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WEIGHING THE POSITIVES

• As a developer nothing is more valuable than
  time.
• Working in technology, many applications being
  developed are on a tight schedule to go out
  before the competition. 
• Theres also pressure to say at the top of the
  game operationally, constantly testing and
  updating to release improved versions to optimize
  user experience.
• One of the best strategies to ensure developers
  have enough time to accomplish all of this is to
  eliminate any drags on their workday. 
• By passing on the management of the server and
  all functions that go with it, to go serverless,
  developers can hone in on coding and running
  applications that make impact.

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