GOLANG

  • opensource
  • Go
  • garbage-collection
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Go

About

Go-A programming language that makes it easy to build simple, reliable, and efficient software. It is also known as Golang. It is a compiled and statically typed language. It is not just a programming language but a language which include features such as garbage collection, limited structural typing, memory safety and CSP-style concurrent programming.

Niles Partners is launching a product which will configure and publish Go Language, to produce free implementations of distributed or otherwise scalable and high availability which is embedded pre-configured tool with Ubuntu and ready-to-launch Image on Azure Cloud Platformn  that contains Go Compiler and Text Editor. 
Before going into deep, one must have the knowledge and understand and learn the concept of concurrency associated with it.

Concurrency, by its design, enables you to efficiently use your CPU horsepower. Even if your processor just has 1 core, concurrency’s design enables you to use that one core efficiently. That is why you can typically have hundreds of thousands of concurrent goroutines (lightweight threads) running on a single machine. Channels and goroutines are central to distributed systems since they abstract the producer-consumer messaging paradigm.

Another thing a person must know is it’s another amazing feature of Interfaces. Interfaces enable loosely coupled or decoupled components for your systems. Meaning that a part of your code can just rely on an interface type and doesn’t really care about who implements the interface or how the interface is actually implemented.

Let us now have a brief look at what all other features are associated with Go.

These features are listed as below:

Features of Go Programming

Support for environment adopting patterns similar to dynamic languages. For example, type inference (x := 0 is valid declaration of a variable x of type int)
Compilation time is fast.
Go programs are simple, concise, and safe.
Production of statically linked native binaries without external dependencies.
Till here, we have studied about what actually a Go language is and what types of features it provides to its users for their ease and flexible to use.

But, one question arise that why one should learn this language or use it?

And to answer this question, we can say that:

We use this language to improve the working environment for its designers and their coworkers. It is more about software engineering than programming language research. Or to rephrase, it is about language design in the service of software engineering.”

In addition to, we have something more for Go and it can be looked at as follows:

Remote package management and online package documentation.
Distinctive approaches to particular problems
An interface system in place of virtual inheritance, and type embedding instead of non-virtual inheritance.
A toolchain that, by default, produces statically linked native binaries without external dependencies.
  1. Type virtual machines in the search.
  2. Under Services, select Virtual machines.
  3. In the Virtual machines page, select Add. The Create a virtual machine page opens.
  4. In the Basics tab, under Project details, make sure the correct subscription is selected and then choose to Create new resource group. Type myResourceGroup for the name.*.
  5. Under Instance details, type myVM for the Virtual machine name, choose East US for your Region, and choose Ubuntu 18.04 LTS for your Image. Leave the other defaults.
  6. Under Administrator account, select SSH public key, type your user name, then paste in your public key. Remove any leading or trailing white space in your public key.
  7. Under Inbound port rules > Public inbound ports, choose Allow selected ports and then select SSH (22) and HTTP (80) from the drop-down.
  8. Leave the remaining defaults and then select the Review + create button at the bottom of the page.
  9. On the Create a virtual machine page, you can see the details about the VM you are about to create. When you are ready, select Create.

It will take a few minutes for your VM to be deployed. When the deployment is finished, move on to the next section.

Connect to virtual machine

Create an SSH connection with the VM.

  1. Select the Connect button on the overview page for your VM.
  2. In the Connect to virtual machine page, keep the default options to connect by IP address over port 22. In Login using VM local account a connection command is shown. Select the button to copy the command. The following example shows what the SSH connection command looks like:

bashCopy

ssh azureuser@10.111.12.123

  1. Using the same bash shell you used to create your SSH key pair (you can reopen the Cloud Shell by selecting >_ again or going to https://shell.azure.com/bash), paste the SSH connection command into the shell to create an SSH session.

Usage/Deployment Instructions

Step 1: Access the Go Language from Azure Marketplace and click ON Get it now button.

Click on continue

Click on create

Step 2: In the Create a virtual machine, enter or select appropriate values for zone, machine type, resource group and so on as per your choice.

 Click on create button.

Step 3: The The Azure create vm Console confirms that Go was deployed

Step 4: Do SSH

Step 5: Use following command to check Go version: –

$ go version

Step 6: Verify all configured environment variables using following command.

$ go env

Step 7: Now create your Go file with “. go” extension

$ nano hello.go

 Step 8: Now enter the code you want to run

Example: to print hello world.

Step 9: Now run your program.

$ go run hello.go

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Until now, small developers did not have the capital to acquire massive compute resources and ensure they had the capacity they needed to handle unexpected spikes in load. Amazon EC2 enables any developer to leverage Amazon’s own benefits of massive scale with no up-front investment or performance compromises. Developers are now free to innovate knowing that no matter how successful their businesses become, it will be inexpensive and simple to ensure they have the compute capacity they need to meet their business requirements.

The “Elastic” nature of the service allows developers to instantly scale to meet spikes in traffic or demand. When computing requirements unexpectedly change (up or down), Amazon EC2 can instantly respond, meaning that developers have the ability to control how many resources are in use at any given point in time. In contrast, traditional hosting services generally provide a fixed number of resources for a fixed amount of time, meaning that users have a limited ability to easily respond when their usage is rapidly changing, unpredictable, or is known to experience large peaks at various intervals.

 

Traditional hosting services generally provide a pre-configured resource for a fixed amount of time and at a predetermined cost. Amazon EC2 differs fundamentally in the flexibility, control and significant cost savings it offers developers, allowing them to treat Amazon EC2 as their own personal data center with the benefit of Amazon.com’s robust infrastructure.

When computing requirements unexpectedly change (up or down), Amazon EC2 can instantly respond, meaning that developers have the ability to control how many resources are in use at any given point in time. In contrast, traditional hosting services generally provide a fixed number of resources for a fixed amount of time, meaning that users have a limited ability to easily respond when their usage is rapidly changing, unpredictable, or is known to experience large peaks at various intervals.

Secondly, many hosting services don’t provide full control over the compute resources being provided. Using Amazon EC2, developers can choose not only to initiate or shut down instances at any time, they can completely customize the configuration of their instances to suit their needs – and change it at any time. Most hosting services cater more towards groups of users with similar system requirements, and so offer limited ability to change these.

Finally, with Amazon EC2 developers enjoy the benefit of paying only for their actual resource consumption – and at very low rates. Most hosting services require users to pay a fixed, up-front fee irrespective of their actual computing power used, and so users risk overbuying resources to compensate for the inability to quickly scale up resources within a short time frame.

 

No. You do not need an Elastic IP address for all your instances. By default, every instance comes with a private IP address and an internet routable public IP address. The private address is associated exclusively with the instance and is only returned to Amazon EC2 when the instance is stopped or terminated. The public address is associated exclusively with the instance until it is stopped, terminated or replaced with an Elastic IP address. These IP addresses should be adequate for many applications where you do not need a long lived internet routable end point. Compute clusters, web crawling, and backend services are all examples of applications that typically do not require Elastic IP addresses.

 

You have complete control over the visibility of your systems. The Amazon EC2 security systems allow you to place your running instances into arbitrary groups of your choice. Using the web services interface, you can then specify which groups may communicate with which other groups, and also which IP subnets on the Internet may talk to which groups. This allows you to control access to your instances in our highly dynamic environment. Of course, you should also secure your instance as you would any other server.

 

Highlights

  • Build Efficient Software
  • Limited Structural Typing
  • Go provides Interfaces that enable loosely couple or decouple components for your systems

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