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Lessons (8)
- Storage Engines & Database Operations
Understand B-trees, LSM trees, write-ahead logs, connection pools, backups and the signals behind database reliability. What …
- Database Internals, Replication and Scaling
Connect storage-engine choices, durability, replicas, query plans, pooling and data layout to real production behaviour. ![Database path …
- Debug Latency Like an Investigator
… More app servers can mean more borrowers for the same exhausted connection pool. Prove where the wait lives.
- Resilience Patterns
… give each dependency its own limited pool of connections, threads or concurrent calls. A slow recommendations service can …
- Creational Patterns: How to Make Objects
… const pool = new pg.Pool({ connectionString: process.env.DATABASE URL, max: 10 }); js // anywhere.js import { pool } from …
- What Are Design Patterns?
… Builder, Prototype, Singleton 🧱 Structural How do I connect objects into bigger structures? Adapter, Bridge, Composite, Decorator, Facade …
- Hexagonal Architecture (Ports & Adapters)
… its own language ForPlacingOrders , OrderRepository Adapter Code that connects a real technology to a port Express controller, Postgres …
- Scaling, Load Balancing & Rate Limiting
… Bigger servers get more Mixed server sizes Least connections Server with the fewest active requests Requests vary in …