Redis

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About

Redis refers to an open-source (BSD licensed), in-memory data structure that is used as a database, message broker, and cache. Also, it supports data structures including strings, lists, hashes, sorted sets with range queries, bitmaps, hyperloglogs, geospatial indexes with radius queries and streams.

Miri InfoTech is launching a product that will configure and publish Redis which is embedded pre-configured tool with Ubuntu and ready-to-launch AMI on Amazon EC2 which contains LAMP.

One of the best aspects of Redis is that it has built-in replication, Lua scripting, transactions, LRU eviction, and multiple levels of on-disk persistence, and provides high availability via Redis Sentinel and automatic partitioning with Redis Cluster. Redis works with an in-memory dataset that depends on your use case, you can persist it either by often dumping the dataset to disk or by affixing each command to a log. Also, the persistence can be disabled that is totally optional if you require a feature-rich in-memory cache.

Also, Redis supports trivial-to-setup master-slave asynchronous replication, along with quick non-blocking first synchronization, auto-reconnection with partial resynchronization on netsplit. Some other features of Redis include the following:

  • Pub/Sub
  • Lua scripting
  • Keys with a limited time-to-live
  • Transactions
  • Automatic Failover
  • LRU eviction of keys

You can subscribe redis an AWS Marketplace product and launch an instance from the product’s AMI using the Amazon EC2 launch wizard.

To launch an instance from the AWS Marketplace using the launch wizard

  • Open the Amazon EC2 console at https://console.aws.amazon.com/ec2/
  • From the Amazon EC2 dashboard, choose Launch Instance. On the Choose an Amazon Machine Image (AMI) page, choose the AWS Marketplace category on the left. Find a suitable AMI by browsing the categories, or using the search functionality. Choose Select to choose your product.
  • A dialog displays an overview of the product you’ve selected. You can view the pricing information, as well as any other information that the vendor has provided. When you’re ready, choose Continue.
  • On the Choose an Instance Type page, select the hardware configuration and size of the instance to launch. When you’re done, choose Next: Configure Instance Details.
  • On the next pages of the wizard, you can configure your instance, add storage, and add tags. For more information about the different options you can configure, see Launching an Instance. Choose Next until you reach the Configure Security Group page.
  • The wizard creates a new security group according to the vendor’s specifications for the product. The security group may include rules that allow all IP addresses (0.0.0.0/0) access on SSH (port 22) on Linux or RDP (port 3389) on Windows. We recommend that you adjust these rules to allow only a specific address or range of addresses to access your instance over those ports
  • When you are ready, choose Review and Launch.
  • On the Review Instance Launch page, check the details of the AMI from which you’re about to launch the instance, as well as the other configuration details you set up in the wizard. When you’re ready, choose Launch to select or create a key pair, and launch your instance.
  • Depending on the product you’ve subscribed to, the instance may take a few minutes or more to launch. You are first subscribed to the product before your instance can launch. If there are any problems with your credit card details, you will be asked to update your account details. When the launch confirmation page displays.

Usage/Deployment Instruction

Step 1: SSH into the instance and type “ubuntu” as the username and then type the following

  • sudo su
  • systemctl restart redis-server
  • service redis status
  • ufw allow proto tcp from <instance ip>/24 to any port 6379
  • redis-cli -h <instance ip> ping

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    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

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      Redis provides a number of features that are natural to search a database such as replication, tunable levels of durability, cluster, and high availability.

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      It is employed in multiple practical uses such as real-time analytics, job and queue management, high-speed transactions, time-series data, and so on.

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      The data structures of Redis offers built-in operations that process data optimally at the database level instead of application level.

    Application Installed

    • icon Redis
    • icon php
    • icon apache
    • icon mysql
    • icon linux