Module 04 - Core
Non Blocking
Hash Map
Build lock-free hash maps that scale without contention.
How atomic operations enable concurrent reads and writes. From hash tables to lock-free algorithms—patterns that power high-performance databases.
Concurrency
Lock-free
algorithms
Scalability
Cores without
contention
Throughput
Maximize
operations
Reliability
Thread-safe
systems
Why This Module Exists
Scale without locks.
The Problem
Locks serialize everything. As core counts grow, contention kills performance. Most engineers reach for locks first and concurrency later.
What You'll Learn
How atomic operations replace locks. Building hash tables and lock-free algorithms. Memory ordering guarantees and happens-before relationships.
The Outcome
Design systems that scale linearly with cores. Implement in-memory hash tables and high-performance caches. Ship production-grade concurrent systems.
Built for Technical Leaders
Who Is This For?
Backend Engineers
Build high-throughput services that scale across multiple cores.
Database Builders
Implement lock-free in-memory structures and indexes.
Systems Engineers
Design algorithms that eliminate synchronization overhead.
Learning Outcomes
What You'll Be Able To Do.
Understand atomic operations and Compare-and-Swap
Build lock-free hash tables and queues
Implement hash table variants and collision handling
Reason about memory ordering and visibility
Eliminate false sharing and optimize cache access
Debug concurrency issues and race conditions
Benchmark concurrent algorithms and measure scaling
Ship production concurrent systems at scale
Synchronization is the enemy of scale.
This module teaches you to eliminate it.
NEXT STEPS
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