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Learning Redis
Learning Redis

Learning Redis: Design efficient web and business solutions with Redis

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Learning Redis

Chapter 2. Getting Started with Redis

Redis is a key-value-based NoSQL datastore developed by Salvatore Sanfilippo, launched in 2009. The name Redis comes from REmote DIctionary Server. Redis is a high-performing single thread server in C.

Redis can be installed on all POSIX-compliant Unix systems. Though there is no production grade release of a Windows system, it can still be installed in a Windows environment for development purposes. In this chapter, we will install Redis in Windows and Mac OS environments, write programs in Java, and play with the in-built client that comes along with the distribution.

Installing Redis on Windows

Microsoft Open Tech group has ported Redis and maintains it for win32/win64 machines. There are two ways in which we can get started with installing Redis on Windows, and these are listed as follows:

  • Working with prebuilt binaries
  • Getting the code and compiling it in the Microsoft environment

For the impatient, downloading the binaries of Redis 2.8 is an easier option. First things first, we need to do the following in order to get started:

  1. Go to https://github.com/MSOpenTech/redis and download the ZIP file under the Clone in Desktop button. For this book, we are going to download the latest version of Redis, that is, the redis-2.8.zip file.
  2. Right-click on the link and save it in a suitable location on your Windows machine. I have saved it at F:\sw2\redis\redis-2.8.zip.
  3. Right-click and unzip the compressed file to a suitable folder. I have named the folder as redis-2.8, and the folder structure after unzipping looks similar to what is shown in the following screenshot...

Installing Redis on Mac OS

Installing Redis is really simple on a Mac OS. Follow these steps and you are good to go:

  1. Download the package from Internet. For this, you can use the following command: wget http://download.redis.io/releases/redis-2.8.3.tar.gz
  2. Untar the compressed tar xzf redis-2.8.3.tar.gz file.
  3. This will create a folder; go to the folder by issuing the cd redis-2.8.3 command.
  4. Compile the file by issuing the make command. This will compile the binaries and create a folder structure, as shown in the following screenshot:
    Installing Redis on Mac OS

    Folder structure for a Mac distribution

  5. Type the src/redis-server command; this will start the server, as shown in the following screenshot:
    Installing Redis on Mac OS

    Starting the Redis server in the Apple environment

  6. Your Redis server is running and it is ready to accept the requests in port 6379. Open another terminal and go the same folder form where you installed Redis. Type the command src/redis-client; this will start the client shell, as shown in the following screenshot:
    Installing Redis on Mac OS

    Redis client...

Hello World in Redis

This section will excite programmers the most. Let's get our hands dirty and punch in some code. But, before that, we have to understand that Redis works on a client-server model and uses the Redis protocol to communicate with the server. For the client to connect to the server, the client has to know the location of the server. For this section, I am going to show samples using the redis-cli and Java clients.

Hello World using redis-cli

Start the Redis client Command Prompt (make sure that the server is running). Type in the following commands, as shown in the following screenshot, and see the outcome:

Hello World using redis-cli

Trying simple Set and Get commands using the Redis client

There are three parts to the command we wrote. They are explained as follows:

  • Set: This command is used to set a value in the Redis server
  • MSG: This is the key for the message to be stored in the Redis server
  • Hello World: This is the value stored in the server for the MSG key

So, this clears a pattern that we have...

Summary

Redis is a simple key-value oriented NoSQL, which can be used as a cache server and as a persistence server. This chapter showcased how simple it is to install Redis in multiple environments, including Windows (Redis can also be used in cloud environments, such as Amazon EC2). The installation for Windows should be used for development and sampling purposes only.

Redis has an interesting set of data structures, and it is sometimes called the data structure server. The next chapter will cover data structure in detail.

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Description

This book is for SQL developers who want to learn about Redis, the key value database for scalability and performance. Prior understanding of a programming language is essential; however no knowledge of NoSQL is required.

Who is this book for?

This book is for SQL developers who want to learn about Redis, the key value database for scalability and performance. Prior understanding of a programming language is essential; however no knowledge of NoSQL is required.

What you will learn

  • Familiarise yourself with NoSQL and install Redis
  • Build solutions and enhance your web applications in Redis
  • Understand the persistent mechanism for better scalability
  • Configure and tune the server to improve performance
  • Identify bottlenecks and how to handle fault management in Redis
  • Learn about backups and recovery strategies for the Redis environment
  • Discover the commands and functions of Redis

Product Details

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Publication date, Length, Edition, Language, ISBN-13
Publication date : Jun 26, 2015
Length: 318 pages
Edition : 1st
Language : English
ISBN-13 : 9781783980123
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Product Details

Publication date : Jun 26, 2015
Length: 318 pages
Edition : 1st
Language : English
ISBN-13 : 9781783980123
Category :
Languages :
Tools :

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Learning Redis
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Mastering Redis
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Table of Contents

10 Chapters
1. Introduction to NoSQL Chevron down icon Chevron up icon
2. Getting Started with Redis Chevron down icon Chevron up icon
3. Data Structures and Communicating Protocol in Redis Chevron down icon Chevron up icon
4. Functions in the Redis Server Chevron down icon Chevron up icon
5. Handling Data in Redis Chevron down icon Chevron up icon
6. Redis in Web Applications Chevron down icon Chevron up icon
7. Redis in Business Applications Chevron down icon Chevron up icon
8. Clustering Chevron down icon Chevron up icon
9. Maintaining Redis Chevron down icon Chevron up icon
Index Chevron down icon Chevron up icon

Customer reviews

Rating distribution
Full star icon Full star icon Half star icon Empty star icon Empty star icon 2.3
(3 Ratings)
5 star 0%
4 star 0%
3 star 66.7%
2 star 0%
1 star 33.3%
William Aug 27, 2015
Full star icon Full star icon Full star icon Empty star icon Empty star icon 3
I having a hard time following the writing style of this Author. It has been a struggle. Technical content is good.
Amazon Verified review Amazon
Simon Aug 02, 2015
Full star icon Full star icon Full star icon Empty star icon Empty star icon 3
Words missing from sentences.It's Neo4j, not Neo4i.Doesn't appear to have been proof read before going in to production.
Amazon Verified review Amazon
Victor Plescan Jan 25, 2019
Full star icon Empty star icon Empty star icon Empty star icon Empty star icon 1
I had a rough understanding of what Redis is, and before applying it in production I decided to read a book to get a better understanding. This book had an alright rating(4.0 on Goodreads) and was in Java, exactly what I was needed.If there would be a book Understanding Redis, this will be the opposite of it. The author shies away from explanatory parts and sticks the code or diagrams whatever possible. As result, the book is clattered by unnecessary code and meaningless diagrams.There is no clear audience for the author, he starts explaining data-types and Big O notations like for non-technical audience but then complementing it with analogies from Java language. As result, I believe it’s not readable for a non-technical person and definitely boring for a Software Engineer, even without any knowledge in Redis.Most of the “learning” is just lists of commands with a brief description and “Execute the program and analyse the result yourself” note. The code examples are mostly are full listings of the programmes, with imports, getters/setters, System.out any other Java-specific stuff, probably to keep book long. In the end, it’s just a clutter of commands with brief text explaining what the program or command does.E. g. Chapter of “Redis in Web Applications” will just lead through the whole code of a simplified app author created. By “lead”, I mean will put the class listing and tell in one-two phrases what it does, in general terms. That’s all.Any documentation would provide better structured and explanatory information about Redis. Usually, books excel at explaining the idea, the use, the design patterns, best practices, building up the understanding of the technology. None of that here.I bought a kindle version from Amazon, the GO-TO menu is not divided by chapters, which makes the book difficult to navigate, only by page or location.I seldom rate books 1 star, even if I don’t like it, I try to find the prons to give it at least two stars, but I cannot call this a book. I wish I could give it 0 stars. The ratio of price vs value makes it nothing short then a scam, in my opinion.And if anything above will not discourage you from reading it, worth note that the Redis 2.6 was used in the book. Which wasn’t the latest version even at the time of publishing.
Amazon Verified review Amazon
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