Master new skills with our 21-day learning paths, broken into easy 5-minute daily lessons.

Start your journey for free.

system Advanced 21 lessons

Redis Internals

Master the world's fastest in-memory store. Deep dive into Redis data structures, single-threaded architecture, persistence, and clustering.

Redis is more than a cache; it is a data structure server. This course explores how Redis achieves sub-millisecond latency. You will understand the Single-Threaded Event Loop and why it prevents race conditions. Master the internal encoding of String, List, Hash, and Sorted Set (Skiplist) structures. We cover persistence options (RDB vs AOF), replication topologies, and how Redis Cluster shards data across nodes. Essential for backend engineers optimizing for speed.

✅ 100% Free & Lifetime Access
⏱️ 5-Minute Lessons (Bite-sized learning)
🚀 21-Lesson Path (Independent modules)
📱 Mobile Friendly (Learn anywhere)
DB Devs
Start Learning
Secure Enrollment via SSL

Complete Course Syllabus

  • 1
    Architecture
    The Event Loop, I/O multiplexing, and single-threaded design.
  • 2
    Data Structures
    Ziplists, Skiplists, and SDS string optimization.
  • 3
    Persistence
    Snapshots (RDB) vs Append Only File (AOF) trade-offs.
  • 4
    Replication
    Master-Replica sync and Sentinel for failover.
  • 5
    Clustering
    Sharding data across 16384 slots automatically.

Estimated completion time: 21 lessons • Self-paced learning • Lifetime access

Career Outlook

Estimated Salary
$120k - $160k

Career Paths

Backend Architect $135k-$180k
Database Engineer $120k-$165k
Infrastructure Eng $125k-$160k

What You Will Learn

Optimize Redis memory usage by understanding internal encodings
Configure RDB and AOF persistence for data durability
Architect highly available Redis Sentinel and Cluster setups
Implement advanced patterns like Pub/Sub and Geo-spatial indexing
Debug latency issues using the Slow Log and Latency Monitor

Skills You Will Gain

Redis Data Structures Distributed Caching System Tuning Database Internals

Who Is This For

Backend Developers
DBAs
Performance Engineers

Prerequisites

Backend Basics
Data Structures

Redis Internals FAQs

Just cache?

No, used as a primary DB, queue, and broker too.

Single threaded?

Yes, we explain why this is a feature, not a bug.

Memcached?

We compare them; Redis does significantly more.

Lua scripting?

Yes, running atomic scripts inside Redis.

Need more info?
All Reork courses are 100% free, self-paced, and fully accessible on mobile devices. No prior experience is required. Read our full Platform FAQ.

Tech Stack & Tools

Redis CLI
Redis Benchmark
RDB Tools
Wireshark

Recommended Next Steps

Distributed Algorithms

system Advanced

Solve the hardest problems in computing. Master Consensus, Paxos, Raft, and Logical Clocks to build fault-tolerant distributed systems.

System Security Architecture

system Advanced

Design secure hardware and OS environments. Master Secure Boot, Trusted Execution Environments (TEE), and isolation technologies like ARM TrustZone.

Operating Systems Ops

system Advanced

Master the OS layer. Deep dive into process management, virtual memory, scheduling algorithms, and concurrency primitives in Linux/Unix.

Start Learning