How to install Redis in Ubuntu

"How to install Redis in Ubuntu"

About Redis

Redis, the Remote Dictionary Server, is an in-memory, open-source data structure store that can be used as a DB, a cache or a message broker. Redis was developed by Salvatore Sanfilippo in 2009 and is one of the most used NoSQL databases currently; its simplicity, speed and flexibility are some of the reasons for its popularity. It runs, for the most part, in-memory, and thus is tremendously fast with data that can be written to disk if necessary. Redis can be utilized in different domains for instance in real time, leader board in games, caching and message queuing systems.

Key Features

In-Memory Storage: Redis stores data in-memory – it means the data is stored in the RAM and therefore fast, very fast. This makes Redis suitable for the applications in which the response time should be as fast as it is possible, like real-time analytics or high-frequency trading platforms.
Data Persistence: In contrast to most in-memory databases, Redis has several persistence modes at its disposal. It can write the kernel data to disk a-sync through RDB, RDB is a backup tool, capturing dataset snapshots at a given time interval; or with the use of AOF, an Append Only File that logs every write operation. These mechanisms can only safeguard data in the sense that data does not disappear with a server crash.
Rich Data Structures: It is imperative to appreciate that Redis is much more than a mere store of basic key-value pairs: it is built to accept a variety of additional data types:

Strings: It means that it is the basic data type of the system, which can store text and binary data.
Hashes: Maps between string fields and string values that are ideal to represent objects.
Lists: A collection of strings designed for use in scenario where ordered structure is necessary(quantity of items, messages and etc.).
Sets: This is collections of distinct and unindexed strings.
Sorted Sets: More comparable to sets, this data structure can, however, be associated with a score, which is especially helpful in leaderboards’ case.
HyperLogLogs, Bitmaps, and Streams: Associated with building-specific structures such as counters, bits, stream data and other not counting structures.

Atomic Operations: While in Redis there is no one that can perform multiple operations at the same time, it offers its data types with atomic operations. This results to the fact that data is always in a consistent state and is readily available for use by clients where necessary. The operations such as INCR, DECR and LPUSH are assured to be atomic and thereby qualify Redis for use in distributed environments.
Pub/Sub Messaging: It thereby supports messaging using the traditional publish/subscribe style, whereby any client can publish a message on a specific channel, while other clients subscribe for receipt of such messages in real-time. This is ideal for applications such as chat functionalities, real-time notification services and updates occurring across different client interfaces.
High Availability with Redis Sentinel: Loaded with features such as high availability, Redis Sentinel is excellent in monitoring. Sentinel is able to recognize if Redis master node has failed and proceed with the failover where it selects one of the replica to replace the master node. This guarantees system ‘ availability’ in the distributed systems.
Redis Cluster for Scalability: Redis Cluster enables the distribution of databases across different horizontal planes due to it’s ability to shard data paradigms. This makes Redis capable of handling large amount of data, but at the same time guaranteeing low latency when the operations are performed over the network.
Extensive Ecosystem: It also supports multiple programming languages such as Python, Java, C#, Node and so on in its simple integration. js, and more. Many are included in its package, it has modules for additional features like, RedisJSON for document store or RedisGraph for graph database, and compatibility with applications such as Docker and Kubernetes.

Use Cases

Redis is used in a variety of scenarios, including:

Caching: It stores data which are often searched thereby increasing the performance of web applications and decreasing the loads on relational databases.
Session Management: Redis in many websites is used to store session information of users during application since it provides a good way of accessing the information.
Message Queues: Redis can also be used in event Driven architectures; due to the ability of Redis to support the act of sending messages between various segments of an application in real-time.
Real-Time Analytics: Performance critical apps such as gaming app or real time analytics applications for social media use Redis to facilitate fast data retrieval and consolidation.

Conclusion

Being fast, versatile and simple, Redis is a go-to solution for developers working on high performance applications. Its ability to operand with many forms of data storage structures makes it capable of solving problems from caching and session management to real time data processing and messaging services among others. Due to its high availability, persistence, and clustering characteristics Redis remains one of the pivotal works of modern accessible scalable applications.

What is Ubuntu?

Ubuntu is one of the GNU/Linux distributions based on Debian distribution which is mainly developed to supply OS for as many individuals as possible. This is one of the most favoured and commonly used Linux distributions, as it can satisfy both new and experienced Linux users and professionals due to its simplicity, a great number of contributions from the users and high level of security.

Overview

Ubuntu operating system was introduced in October 2004 by a company established by the South African, Mark Shuttleworth known as the Canonical Ltd. Due to the fact that it relies on community and costs a reasonable amount of money, the name Ubuntu is derived from the languages of Africa and it means ‘humanity toward others’. Ubuntu is free to download, use, and share, and it comes in several flavors, each tailored to different use cases, Ubuntu is an open-source operating system and is available for download, use, and distribution for free, and the Ubuntu operating system has several distros, each being developed for a particular purpose.
Ubuntu operating system was introduced in October 2004 by a company established by the South African, Mark Shuttleworth known as the Canonical Ltd. Due to the fact that it relies on community and costs a reasonable amount of money, the name Ubuntu is derived from the languages of Africa and it means ‘humanity toward others’. Ubuntu is free to download, use, and share, and it comes in several flavors, each tailored to different use cases: Ubuntu is an open-source operating system and is available for download, use, and distribution for free, and the Ubuntu operating system has several distros, each being developed for a particular purpose.
Ubuntu Desktop: At least that was the original version designed for individual personal computers and laptops. It is a based OS and contains pre-installed application software including Firefox internet browser, Libre Office suite, and some multimedia applications.
- Ubuntu Server: Development: Web server version for features developers need and work for web hosting, cloud computing or data center. It does not have a graphical user interface by default because it is intended for server tasks and optimized for performance.
Ubuntu Studio: A creative edition targeted towards artists and designers, allowing them to edit audio, video, stencils, and graphics in a single application.
Ubuntu Kylin: A version designed with the Chinese government’s endorsement and adjusted to Chinese conditions and preferences.

Features of Ubuntu

User-Friendly Interface: The underlying GUI environment of Ubuntu has always been based on GNOME, although Ubuntu switched from its in-house developed Unity in 2017. One of the best things about Ubuntu is that it provides a bright and clear interface, which provides an opportunity for an average user who doesn’t want to deal deeply with Linux.
Software and Package Management: It utilizes the APT (Advanced Package Tool) as the package manager, which makes it very convenient for the installation, updating, and removal of software. It also supports a special kind of package called “snap” packages, which are applications that contain all necessary dependencies.
Security: One of Ubuntu’s strengths is the security of this operating system. It emphasizes security with features such as updates, LTS versions, and security features like firewalls and encryptors.
Community and Support: Ubuntu has a powerful and dynamic community base that participates in the development of its new versions and also helps in case of problems a user may face. It has professional support services, thus making it suitable for businesses and enterprises to obtain their products from Canonical.
Customization: Ubuntu is extremely configurable. When implemented, it provides an exceptionally high degree of customization. Users can select various graphical interfaces, adjust the configuration, and change the look of the operating system.
Performance: Ubuntu is very friendly to all types of systems, ranging from older to current systems. It is especially known for its stability and, more importantly, operational performance, which qualifies it for both desktop and server use.

Install Redis

\### Step 1. Update Package List

At the very first update your package list to latest version:

sudo apt update

Step 2. Install Redis

After that install redis on your system:

sudo apt install redis-server

Step 3. Enable Redis to start on boot

This command will run Your Redis on boot:

sudo systemctl enable redis-server

Step 4. Start the Redis services

sh-session sudo systemctl start redis-server

Step 5. Check Status

sh-session sudo systemctl status redis-server

Test Redis

You can verify Redis installation by using redis-cli:

redis-cli

Vishal