The Mutex Club: Mastering Java Executors with Fixed & Cached Thread Pools
Key Insights ### Executors Factory Methods The Executors class is your one-stop shop for thread pool creation. Instead of wrestling with…
The Mutex Club: Demystifying Barrier Synchronization
Key Insights # Barrier Basics Imagine a relay race where every runner must wait at a checkpoint before the next leg. That’s barrier…
The O(n) Club: Network Delay Time, Java, and Your Shortcut to Dijkstra’s Fame
The O(n) Club: Network Delay Time, Java, and Your Shortcut to Dijkstra’s Fame ⚡ TL;DR Picture a network where you yell “coffee’s ready!” down…
The O(n) Club: Is Subsequence: Why Order Matters (and Coffee Helps)
The O(n) Club: Is Subsequence — Why Order Matters (and Coffee Helps) ⚡ TL;DR Checking if s is a subsequence of t? Don’t waste your time (or…
The Mutex Club: Graceful Thread Interrupts Without Deadlocks
The Mutex Club: Graceful Thread Interrupts Without Deadlocks ## Key Insights # Mutex Exclusivity Think of a mutex as a barista’s espresso…
The Mutex Club: volatile Means Visibility, Not Atomicity ⚠️
Key Insights ### Memory Visibility vs Atomicity Volatile is a visibility enforcer, telling compilers to hit main memory for every read/write.…
The O(n) Club: Two Oddballs, One XOR Trick – Solving Single Number III Without the Hashmap Hype
The O(n) Club: Two Oddballs, One XOR Trick – Solving Single Number III Without the Hashmap Hype ⚡ TL;DR You’ve got an int array where…
The O(n) Club: The Skyline Problem — Heap, Sweep, and the Art of Urban Java
The O(n) Club: The Skyline Problem — Heap, Sweep, and the Art of Urban Java ⚡ TL;DR Given a row of buildings, your job is to chart those…
The Mutex Club: Async Isn’t Parallelism—Your Secret Productivity Hack
Key Insights – Non-Blocking Execution: Async is like a clever waiter that juggles orders instead of standing idle. In JS (async/await)…
The Mutex Club: Mastering Multi-phase Task Coordination
Key Insights ### Orchestrating the Phases Multi-phase coordination is essentially a tightly choreographed dance of agents or threads moving…