Authentication vs. Authorization vs. OAuth: The 'ID Card' Mental Model
Stop mixing up 401 and 403. A mastery guide to AuthN (Who you are), AuthZ (What you can do), and the OAuth Valet Key.
Docker vs. Kubernetes: The 'Hotel Manager' Mental Model
Why do I need K8s if I have Docker? A mastery guide to understanding Containers (Robots) vs Orchestration (The Manager).
Latency vs. Throughput: The 'Water Pipe' Mental Model
Why is your API slow even though your internet is fast? A mastery guide to P99 latency, bandwidth, and finding the bottleneck.
Load Balancer, Reverse Proxy, API Gateway: The Grand Hotel Mental Model
Confused by the 'Traffic Trio'? A mastery-level guide to Load Balancers, Reverse Proxies, and API Gateways — from mental models to Nginx configs.
Monolith vs. Microservices: The 'Mansion vs. Village' Mental Model
Is Microservices mostly hype? A mastery guide to the 'Distributed Monolith', Latency taxes, and knowing when to split.
Partitioning, Bucketing, Sharding, Replication, Edge: The Clean Mental Model
A precise mental model for partitioning, bucketing, sharding, replication, and edge computing - when to use each and why they exist at different layers.
SP7 - Proxy - Learn Design Pattern From Simple Things
The boss wants the employees to focus on work and not get distracted by social media. So he decides to block some websites on the corporate network during working hours.
SQL vs. NoSQL: The 'Library vs. Warehouse' Mental Model
Why is MongoDB faster but Postgres safer? A mastery guide to Schema, ACID, and why JSONB might be the only NoSQL you need.
