Amazon Redshift: Basic Introductory Guide

Chetan Dekate 12 Jul, 2022
8 min read

This article was published as a part of the Data Science Blogathon.




When an organization gains power, the size of the data that needs to be stored, monitored and analyzed increases dramatically. In normal data repositories, queries will start to take more time, making data harder to manage. With the advent of cloud computing, the need for warehousing solutions that can accelerate the growing demand for data storage and analysis has become apparent, which has led organizations to seek alternative storage facilities.
Amazon Redshift for AWS is the direct answer to this need.

Let’s Get the Basics Right!

What is Amazon Redshift?

Amazon Redshift (also known as AWS Redshift) is a cloud-based petabyte-scale database product designed for data storage and analysis. It is also used to perform large-scale migration. The Redshift-based website is designed to connect to SQL-based clients and business intelligence tools, making data available to users in real-time. Based on PostgreSQL 8, Redshift delivers fast performance and effective queries that help teams make sound business analyses and decisions.

What is it used for?

AWS Redshift is a data storage product developed by Amazon Web Services. It is used to store and analyze data on a large scale and is often used to make large site transfers.

What is the Cluster?

Each Amazon Redshift data repository contains a set of computer resources (nodes) organized into clusters. Each Redshift collection uses its own Redshift engine and contains at least one website.

Is it a related website?

Redshift is Amazon’s database and is designed to capture large amounts of data as a repository. Those who love Redshift should be aware that it contains a database of duplicate nodes, and allows you to use even the most traditional information in the cloud.

Is it fully owned?

Redshift is a fully managed cloud database. It has the ability to limit petabytes but allows you to start with just a few gigabytes of data. Using Redshift, you can use your data to get new business information.

What is the difference between Amazon S3 and AWS Redshift?

There is a clear difference between the Amazon S3 and the AWS Redshift. Although both are Amazon Web Service products, S3 is used for product storage, and AWS Redshift is a data warehouse.

Is AWS Redshift Ready for OLAP?

AWS Redshift is designed to process online analytics and BI tools. This means that any analysis that requires complex queries and large data sets will be a valid case of using Amazon Redshift.
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Amazon Redshift vs Traditional Data Warehouses

Amazon Redshift is another straightforward alternative to traditional data storage depots. Let’s take a look at how Redshift compiles storage in the following locations:
• Performance
• Cost
• Strength
• Security


Amazon Redshift is best known for its speed. Redshift brings fast query speeds to large data sets, dealing with petabyte data sizes and more. The speed at which Redshift processes data up to these sizes is not easy to find in the standard data storage area, making it a top choice for applications that use large amounts of queries where needed.

The ability to deliver this level of performance comes with the use of two structural elements: column data retention and large compact processing design (MPP). We will dive into these two later.


Amazon Redshift is significantly faster than regular asset storage – but when it comes to choosing technology solutions, organizations are undoubtedly more concerned about cost. As a cloud-based solution, Amazon Redshift is able to provide high-quality performance in an affordable way. IT administrators know that traditional storage is very expensive from the start, and the initial cost of hardware probably costs millions. On the other hand, there are no major pre-set costs for setting up and launching with Redshift. As a fully managed solution, Redshift has no repetitive hardware costs and repair costs. The website manages data storage cans that can handle large amounts of data without going through a long process of purchasing and purchasing strategies from the leadership required by the hardware of millions of dollars.

AWS Redshift Scalability

Data storage in a normal environment poses a challenge in case your data needs to increase or decrease.
With conventional asset storage, when organizational data requires a change, they are forced to create another costly investment cycle in order to purchase and use the new hardware.
Redshift allows for more flexibility and scalable scale. As your needs change, Redshift can go up or down quickly to match your capacity and performance requirements with a few clicks on the admin console.
In terms of cost, the much-needed price ensures you only pay for what you use. Not being bound by expensive hardware and long-term repair contracts means that organizations are free to change their minds without incurring exorbitant costs. From 160GB DC1.One large node up to 16TB DS2.8XMany petabytes or more data nodes, you can access power processing where needed.


Security on Redshift

Although Amazon Redshift is significantly better than conventional storage for the above-mentioned stockpiles, safety is still a concern for many businesses – but not because of known safety risks. The fact is that some people still feel anxious about not having their physical data available.
That being said, security is a major issue for Amazon, know that this is an important factor in stockpiling decision-making solutions.

Best Security Practices

Amazon follows the shared responsibility model for security where Amazon is responsible for cloud security, and the organization is responsible for cloud security.
Cloud protection: AWS protects the infrastructure where AWS services operate in the cloud. They are responsible for ensuring that features and services that can be safely used are available to users. AWS also ensures that safety levels are regularly monitored and verified as part of AWS compliance.
Cloud security: The security obligation of organizations using Redshift is determined by the AWS service they use. Organizations are also responsible for other aspects such as data sensitivity, internal organizational requirements, and compliance with laws and regulations.
That being said, Amazon Redshift has many security features for the great Amazon Web Services platform. Verification and access is provided and managed at AWS level by Identity and Access Management (IAM) accounts. Collection protection groups are created and associated with data collections for internal access. For organizations that use a private cloud, Virtual Private Cloud (VPC) access is also available. Data encryption is also enabled for group creation and cannot be changed from encrypted to non-encrypted. With transit data, Redshift uses SSL encryption to connect to S3 or Amazon DynamoDB for COPY, RELEASE, backup copy, and restore functions.


As mentioned above, Amazon Redshift is able to deliver faster performance in the classroom due to the use of two key architectural elements: Massively Parallel Processing (MPP) design and column data storage. Let’s take a look at each and see how they allow for faster processing on Redshift.

Redshift’s Massive Parallel Processing (MPP)

Redshift’s Massively Parallel Processing (MPP) design automatically distributes the workload evenly across multiple nodes in each cluster, allowing for faster processing and even more complex queries with large amounts of data. Many nodes share the processing of all SQL functions in a consistent manner, leading to the final compilation of results. Users can configure the distribution of data by placing the data where it needs to be before the query is used. This is done by choosing the right distribution style, and minimizing the impact of the redistribution step.

Columnar Data Storage

By using columnar storage of database tables, Amazon Redshift reduces disk I / O requirements, contributing to improved performance query analysis. When the database table information is stored in column format, the number of disk I / O requests and the amount of data required to upload to disk are reduced. When small data is loaded into memory, Redshift can perform additional memory processing with extracted questions. The time required to create a query is reduced using this method compared to when data is stored in a queue.

Tutorial: How to set up Amazon Redshift?

Getting started with Redshift
  • AWS account
To get started with Amazon Redshift, you need an AWS account. You may start with a free trial if you do not have an account.
  • Open the firewall port
You will also need to make sure you have an open hole that I can use for Redshift. By default, Redshift will use port number 5439 but the connection will not work if that port is not unlocked on your firewall. Make sure that the hole is open or point to the open hole in your firewall and enter the hole number when creating the collection. The port number cannot be changed once the collection has been created.
  • Permission to access other AWS services
To access resources on another AWS device such as Amazon S3, the Redshift collection you are about to require requires access permissions. Such permits can only be granted in two ways:
  1. Provide AWS access key to IAM user with required permissions
  • By building a dedicated IAM role attached to the Redshift collection (recommended)
You can create an IAM role by following these instructions from AWS.

Introducing the Cluster

After completing the requirements, you are ready to launch the Redshift collection.
  • Step 1: Once you have logged in to the user with the required permissions to perform group operations, open the Amazon Redshift console.
  • Step 2: Select the region in which you want to build the collection.
  • Step 3: Select Quick Start Group and enter the following values. These are the default values ​​for those who want to check out the Redshift while earning a small charge. If you already have certain values ​​in mind for your use, replace these values ​​with one.
Node type: dc2.large.
Number of calculation nodes: 2.
Collection identifier: examplecluster.
Username: awsuser.
User Password and Password Verification: Enter a password for the primary user account.
Database: 5439.
Available IAM roles: Select myRedshiftRole.
  • Step 4: Click Launch Cluster and wait a few minutes for the launch to complete. When you are done, click Close to return to the group list. The collection you just released should be listed there. Check that the Cluster Status says it is available, and then Database Health says it is healthy.
  • Step 5: Select the collection you just created. Click the Cluster button just above the list and click Change Model. In the dialog box that appears, select the VPC security groups you want to associate with this group and then click Adjust to save the connection.

Authorizes access to the Redshift collection

After following the steps, the Redshift collection has now been launched. To connect to the collection, you need to set up a security team to authorize access. When the collection is launched on the EC2-VPC platform, follow these instructions from AWS.

Links to cluster with active queries

Now that you have started the collection, you can link to it and start using the questions. Asking questions can be done in two ways:
  • Connect to your collection from the AWS Management Console using AWS Query Editor.
  • Connect to your collection with a SQL client tool like SQL Workbench / J.
At this point, you can now use your Redshift collection. You can create tables on the website, upload data to tables, and then try to use queries. These tasks can be done with the AWS Query Editor or with your favourite SQL client tool.


We have seen a complete introduction to Redshift including performance cost scalability and security. It is a fully managed, petabyte-scale data warehouse service in the cloud. You can start with just a few hundred gigabytes of data and scale to a petabyte or more. This enables you to use your data to acquire new insights for your business and customers. we have also seen the setup process which is pretty simple and easy to follow.

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Chetan Dekate 12 Jul, 2022

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