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⚡ AI Lessons
Dev.to · Doogal Simpson
⚡ AI Lesson
2w ago
Handling ISO Currency Codes in Software
Quick Answer: When processing financial transactions over the internet, systems cannot rely on...
Dev.to · Doogal Simpson
🔧 Backend Engineering
⚡ AI Lesson
2w ago
How Git Uses Merkle Trees for Fast Verification
Quick Answer: Git doesn't compare files line-by-line. Instead, it uses a Merkle tree data structure....
Dev.to · Doogal Simpson
⚡ AI Lesson
2w ago
Correct by Design vs Correct by Coincidence
Quick Answer: Code is "correct by coincidence" when it relies on duplicated, fragile details—like...
Dev.to · Doogal Simpson
⚡ AI Lesson
2w ago
How to Represent Money in Software
Quick Answer: Never use floating-point numbers to represent money in software. Because floating-point...
Dev.to · Doogal Simpson
📋 Product Management
⚡ AI Lesson
3w ago
Agile is a Mindset, Not Endless Sprint Meetings
Quick Answer: I firmly believe true Agile is a mindset focused on shipping small, incremental changes...
Dev.to · Doogal Simpson
⚡ AI Lesson
3w ago
Good Enough Software: Balancing Quality and Time to Market
Quick Answer: The pursuit of perfect software often leads to delayed launches, burned budgets, and...
Dev.to · Doogal Simpson
☁️ DevOps & Cloud
⚡ AI Lesson
4w ago
Debugging Microservices with Distributed Tracing
Quick Answer: Distributed tracing solves microservice debugging by attaching a unique Trace ID to...
Dev.to · Doogal Simpson
⚡ AI Lesson
1mo ago
Database Internals: How Data is Stored in Pages
Quick Answer: Databases don't just dump raw rows onto a disk sequentially. Instead, they chunk data...
Dev.to · Doogal Simpson
🤖 AI Agents & Automation
⚡ AI Lesson
1mo ago
Single Responsibility Principle for AI Sub-Agents
Quick Answer: When building multi-agent AI systems, assigning human personas with broad...
Dev.to · Doogal Simpson
⚡ AI Lesson
1mo ago
How Database Reads Work: Pages, Buffer Pools, and Disk
Quick Answer: When you query a database, it rarely reads a single row directly from disk. Instead, it...
Dev.to · Doogal Simpson
📐 ML Fundamentals
⚡ AI Lesson
1mo ago
Spotify's Approximate Nearest Neighbor Search
Quick Answer: Spotify skips exact nearest neighbor calculations because searching hundreds of...
Dev.to · Doogal Simpson
⚡ AI Lesson
3mo ago
Git Internals: Why Your Commits Aren't Actually Diffs
TL;DR: Git is a content-addressable filesystem that stores project states as full snapshots rather...
Dev.to · Doogal Simpson
⚡ AI Lesson
3mo ago
Your JavaScript Array is a Hash Map in Disguise
TL;DR: JavaScript arrays are fundamentally objects where integer keys are treated as strings. To save...
Dev.to · Doogal Simpson
📣 Digital Marketing & Growth
⚡ AI Lesson
3mo ago
Beyond the Haversine Formula: Why I Use Geohashing for Spatial Search
TL;DR: Geohashing encodes 2D coordinates into hierarchical string prefixes, transforming expensive...
Dev.to · Doogal Simpson
☁️ DevOps & Cloud
⚡ AI Lesson
4mo ago
How Docker Actually Works: A Deep Dive into Namespaces and Cgroups
TL;DR: Docker containers are just standard Linux processes restricted by Namespaces and Cgroups....
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