Why Your Database Hates COUNT(DISTINCT) and Why HyperLogLog is the Cure
Doogal Simpson
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90 posts published so far
Stop Joining Millions of Rows for Every Single Swipe
Doogal Simpson
How Big Tech Scales View Counts: The Power of HyperLogLog and Harmonic Means
Doogal Simpson
How to build a profanity filter that actually works
Doogal Simpson
How Docker Actually Works: A Deep Dive into Namespaces and Cgroups
Doogal Simpson
Scaling Profanity Filters: Why I Use Tries for Real-Time Chat
Doogal Simpson
Why Your Linked List Wants to Be a Bloody Tree
Doogal Simpson
32-Element Branching: How Scala Vectors Solve Immutable Memory Pressure
Doogal Simpson
Why the Ring Buffer is the Foundation of High-Performance Systems
Doogal Simpson
Your Undo Button is Just a Stack of Pancakes
Doogal Simpson
Why Your Distributed System is a Brawl (and How Queues Fix It)
Doogal Simpson
Why Dynamic Arrays Aren't Actually Dynamic
Doogal Simpson
Why Removing the Head of Linked List is Constant Time
Doogal Simpson
The Pointer Arithmetic of Constant Time: Why Arrays Scale O(1)
Doogal Simpson
NASA’s $125M Unit Error: Why Your API Needs Explicit Naming
Doogal Simpson
Why Doing Nothing is Mathematically Your Fastest Debugging Tool
Doogal Simpson
Why Your Backup Strategy Might Be a $100 Million Gamble
Doogal Simpson
Preventing Stack Overflows: Why Base Case Placement is Critical
Doogal Simpson
Your First Management Role Is a Career Reset, Not a Promotion
Doogal Simpson
Don't Build a Distributed System Until You're Forced To
Doogal Simpson
Delivering the Pumpkin Before Halloween: Why Lead Time for Changes Dictates Engineering Value
Doogal Simpson
Why High Deployment Frequency Is The Secret To Software Stability
Doogal Simpson
Stop Guessing: Why DORA Metrics are the Only Way to Scale Without Breaking Everything
Doogal Simpson
Stop Paying the Office Drone Tax: Why "Weird" Teams Ship Better Code
Doogal Simpson
The Law of Loudness: Why Your Code Should Scream, Not Whisper
Doogal Simpson