Redis Internals

9h 6m 41s
English
Paid

This is a self-paced course where you will explore the internal workings of Redis by reimplementing its key features in Golang. Together, we will recreate mechanisms such as the event loop, serialization protocol, persistence, pipelining, eviction, and transactions.

Read more about the course

Redis is one of the most versatile modern databases. Although it is often used as a cache, it can also function as a message broker, streaming engine, and much more. This course will answer your main questions about Redis: why is it so fast? and how does it handle a huge number of TCP connections while remaining single-threaded?

Throughout the course, we will deconstruct Redis step by step, and in the process, we will write its full implementation in Go. The implementation will be compatible with any Redis client in the world - you will be able to connect to our database just like with the real Redis! All the code is available in open access on GitHub (DiceDB/dice).

Why enroll?

  • Understand the architecture from the inside
    • You will learn how databases are created from scratch and understand the key architectural decisions that make Redis so unique.
  • Explore the "unknown"
    • Master the most intriguing concepts and "tricky" algorithms that underlie the high speed and flexibility of Redis.
  • Become a better engineer
    • You will grow as a developer and be able to call yourself a true "Asli Engineer."

Participant Requirements

We will be implementing the main mechanisms of Redis, such as the event loop, serialization protocol, persistence, pipelining, and eviction. Therefore, it is important to have:

  • basic knowledge of Go
  • a development environment on Linux
  • a Google account (as only Google sign-in is supported)

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# Title Duration
1 Course Introduction 10:55
2 What makes Redis special? 22:04
3 Writing a Simple TCP Echo Server 16:25
4 Speaking the Redis' Language 15:50
5 Implementing RESP 14:38
6 Implementing PING 19:29
7 IO Multiplexing and Event Loops 21:15
8 Handling multiple concurrent clients 26:29
9 Implementing GET, SET, and TTL 22:09
10 Implementing DEL, EXPIRE and auto-deletion 27:23
11 Eviction strategies and implementing simple-first 20:24
12 Implementing Command Pipelining 22:00
13 Implementing AOF Persistence 21:05
14 Object, Encodings, and Implementing INCR 24:48
15 Implementing INFO and allkeys-random eviction 19:37
16 The Approximated LRU Algorithm 23:15
17 Implementing the Approximated LRU Algorithm 25:27
18 Understanding how Redis caps memory 13:20
19 Overriding malloc for better performance 06:11
20 Implementing Graceful Shutdown 37:18
21 Implementing Transactions 22:00
22 List Internals - Ziplist and Quicklist 28:16
23 Set Internals - Intset 13:25
24 Geospatial Queries and Geohash 21:39
25 String Internals - Simple Dynamic Strings 15:56
26 Hyperloglog and Cardinality Estimation 13:22
27 LFU and Approximate Counting 20:49
28 What next? 01:12

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