Redis Engineering Masterclass: Zero to Veteran (10–12 Year Level)

Welcome to the definitive Redis technical encyclopedia, internal mechanics dissection, and production field manual. This series breaks down Redis from its single-threaded ae event loop to its internal C memory allocators, custom data structures, replication consensus, and failure recovery playbooks.

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Curriculum Table of Contents

Phase	Module Title	Chapters Covered	Target Depth
Blueprint	Master Memory Map: Connected Architecture	Universal	Complete connected neural graph, read/write/eviction pathways, cause-and-effect matrix
Evolution	Architectural Evolution Deep Dive	2009–2024	15-year visual evolution: VM removal, Cluster, Modules, Threaded I/O, Multi-Part AOF
Phase 01	Evolution, Process Model & Sandbox	Ch 1–5	Single-threaded philosophy, redis.conf, client output buffer limits
Phase 02	Data Types & Storage Footprint	Ch 6–10	OBJ_ENCODING_INT, raw vs embstr, Listpacks, Quicklists, Radix tree Streams, HyperLogLog
Phase 03	Cellular Memory Allocators & C Internals	Ch 11–15	Jemalloc arenas, mem_fragmentation_ratio, SDS headers, Dict progressive rehashing
Phase 04	Event Loop & Threaded I/O	Ch 16–19	ae event loop (Epoll/Kqueue), file vs time events, beforeSleep, Threaded I/O
Phase 05	Persistence Engine & Recovery	Ch 20–23	RDB fork Copy-on-Write, AOF fsync pipelines, Multi-Part AOF (v7.0), Hybrid persistence
Phase 06	High Availability, Sentinel & Clustering	Ch 24–27	Replication backlog, PSYNC2, Sentinel Raft-like voting, 16,384 hash slots, gossip
Phase 07	Security, ACLs & Isolation	Ch 28–30	Redis ACL categories, TLS/SSL inter-node bus encryption, dangerous command renaming
Phase 08	Extensions, Modules & Ecosystem	Ch 31–33	Redis Modules API in C/Rust, RediSearch, RedisJSON, Lua scripts, Redis Functions
Phase 09	Choke Points & Administration	Ch 34–37	BigKey/HotKey detection, SLOWLOG, LATENCY DOCTOR, maxmemory eviction thrashing
Phase 10	Destruction Labs & Runbooks	Ch 38–40	Single-thread freeze, Fork COW memory OOM kill, Replication buffer storms