This document introduces Redis, a popular open-source key-value NoSQL database. It discusses what Redis is, where it is used (server-side/backend), who uses it (many companies), and why it is useful (features like session storage, caching, queues, and real-time analytics). The document then covers Redis' main features like being lightweight, supporting complex data structures, and having language bindings for many languages. It provides an example use case of Redis being used to cache user sessions and feeds for a productivity application called Dailyfocus to reduce latency and server costs. In the end, useful Redis resources are listed for learning more.

1. Introducing
Redis
Jorge Ferreiro
Ferreiro.me

2. Jorge Ferreiro @jgferreiro | Introducing Redis
👋Jorge Ferreiro
Ferreiro.me/about

3. Jorge Ferreiro @jgferreiro | Introducing Redis
Before
starting…

4. Jorge Ferreiro @jgferreiro | Introducing Redis
Who knows
Redis?
Hands up! ☝

5. Jorge Ferreiro @jgferreiro | Introducing Redis

6. Jorge Ferreiro @jgferreiro | Introducing Redis
Topics for today!
• The 4 questions:
• What, Where, Who, When!
• Main features
• Use case: Dailyfocus

7. The four
Questions

8. Jorge Ferreiro @jgferreiro | Introducing Redis
What is Redis?
Redis is the most popular(1) key-value
NoSQL database
Created in 2009 by Salvatore Sanfilippo.
[1] 22 May 2017 - https://db-engines.com/en/ranking/key-value+store

9. Jorge Ferreiro @jgferreiro | Introducing Redis
Where Redis?
Server side! Backend ✌

10. Jorge Ferreiro @jgferreiro | Introducing Redis
Who is using Redis?
And probably your future companies :)

11. Jorge Ferreiro @jgferreiro | Introducing Redis
Why Redis?
• Session storage
• Page Cache
• Queues
• Real time analytics,
chat apps
• API throttling (API
requests) Credit: redislab
More on this: http://objectrocket.com/blog/how-to/top-5-redis-use-cases

12. Jorge Ferreiro @jgferreiro | Introducing Redis
Buddy, no need to worry!

13. Features

14. Jorge Ferreiro @jgferreiro | Introducing Redis
Main features
• Easy to use and lightweight
• Open source! (Yay! 👌)
• Supports complex data structure on the
value field 💃
• Tons of languages supported! (🔥)
Go, JavaScript (Node.js), Ruby, Java, PhP, Python…
• Redis clusters!

15. Jorge Ferreiro @jgferreiro | Introducing Redis
#1 key-value DB
[1] db-engines.com ranking key-value+store (May 2017)
YAY!

16. @jgferreiro - Introducing Redis
Basic Redis operations
Store
• SET name Jorge
• LPUSH names Jorge Paul Bla
Retrieve
• GET name => Jorge
• LINDEX names 1 => Paul
More useful operations
• INCR number => 11
• EXPIRE number 120

17. Jorge Ferreiro @jgferreiro | Introducing Redis
Wanna try?
Try.redis.io

18. Brief use case

19. Jorge Ferreiro @jgferreiro | Introducing Redis
Dailyfocus
It’s a productivity application that
integrates all your services in one place

20. Jorge Ferreiro @jgferreiro | Introducing Redis
Dailyfocus: stack
(ML experiments)
😎
Databases

21. Jorge Ferreiro @jgferreiro | Introducing Redis
The Problem
1. Calling APIS are costly and in Dailyfocus
we are constantly doing it :)
2. Delays on loading time make users angry
3. High server costs 💰$$$ and workloads
increased without caching

22. Jorge Ferreiro @jgferreiro | Introducing Redis
CACHE ME OUTSIDE
HOWBOW DAH

23. Jorge Ferreiro @jgferreiro | Introducing Redis
The Solution (I)
Caching user Sessions
Requests
Server parses request and gets sessions from Redis

24. Jorge Ferreiro @jgferreiro | Introducing Redis
The Solution (II)
No cached?
Update
cache
Call to
MongoDB,
external
APIS, etc…
to reduce latency and waiting time
…
Caching user Feeds

25. Jorge Ferreiro @jgferreiro | Introducing Redis
Questions?

26. Jorge Ferreiro @jgferreiro | Introducing Redis
Useful resources
(1) Redis Vs. Memcached
(2) Redis: Zero to Master in 30 minutes - Part 1
(3) Try Redis Online
(4) Introduction to Redis Types

27. Jorge Ferreiro @jgferreiro | Introducing Redis

28. Jorge Ferreiro @jgferreiro | Introducing Redis
Thank you!
Jorge@ferreiro.me