The Mutex Club: Mastering Observer Prime for Deadlock-Free Concurrency
The Mutex Club: Stop Deadlocks at the Door Tired of your observers turning into drama queens under thread contention? Observer Prime (the…
The Mutex Club: Why Load Testing Is the Only Reality Check Your Mutexes Will Ever Get
Key Insights ### Real vs. Simulated Load Think of simulated stress as padded sparring. You catch the moves, but the real fight—in the ring…
The O(n) Club: Flatten a Multilevel Doubly Linked List — Now with 100% Less NullPointerException
The O(n) Club: Flatten a Multilevel Doubly Linked List — Now with 100% Less NullPointerException ⚡ TL;DR Take your multi-level doubly linked…
The O(n) Club: Contains Duplicate: The HashSet Supremacy Edition
The O(n) Club: Contains Duplicate—The HashSet Supremacy Edition ⚡ TL;DR Want to bully an array into confessing its duplicates? Toss everything…
The Mutex Club: Thread Affinity and CPU Pinning Unleashed
Introduction: Pinning Threads for Fun and Profit Imagine threads as hungry chefs who hop between kitchen stations clutching their secret…
The Mutex Club: Taming the CAS Retry Storm
Introduction # The Brutal Truth CAS (Compare-and-Swap) is the heavy hammer in your concurrency toolbox: atomic, efficient, and surprisingly…
The O(n) Club: Subarray Product Less Than K (Why Sliding Windows Aren’t Just For Sums)
The O(n) Club: Subarray Product Less Than K (Why Sliding Windows Aren’t Just For Sums) ⚡ TL;DR Given an array of positive ints (nums)…
The O(n) Club: Word Ladder II – BFS, DFS, and the Great Shortest-Path Scavenger Hunt
The O(n) Club: Word Ladder II – BFS, DFS, and the Great Shortest-Path Scavenger Hunt ⚡ TL;DR You need to find all the shortest word ladders…
The Mutex Club: ThreadLocal and Request Scope—Why Child Threads Don’t Inherit Your Data
TL;DR: Spring’s request scope lives in ThreadLocal—and that means any child threads you spin up start with empty pockets. No automatic…
The Mutex Club: Lock Striping, the Unsung Sitcom Star of Concurrency
Key Insights # What is Lock Striping? Lock striping divides a shared data structure into multiple independent stripes (buckets), each guarded…