System Design

How Redis Cheats Logic to Scale: The Masterclass of Probabilistic Expiration

trants Nov 5, 2025 0 1

Redis doesn't use heavy data structures like Heaps (O(log n)) to manage key expiration. Instead, it uses a brilliant combination of lazy checks and probabilistic random sampling (O(1)) to maintain sub-millisecond latency. Here is how the algorithm works under the hood.

System Design Roadmap: 17 Core Concepts Every Architect Must Know

trants Oct 23, 2025 0 2

Don't start coding without a 30,000-foot view. This comprehensive guide breaks down the essential pillars of system design, from Consistency Models and Polyglot Persistence to Cost Optimization and Scaling Strategies. A must-read checklist for building robust software.

From Chaos to Clarity: A Step-by-Step Guide to Mastering System Design

trants Sep 13, 2024 0 1

Don't let complex requirements overwhelm you. This engineer's guide breaks down the system design process into 5 actionable steps—from defining the problem statement to final assembly—helping you transform rough ideas into robust, scalable software architectures.

Crowdsourced Traffic Intelligence: Architecting and Evaluating a Web-Based Road Update System

trants May 24, 2024 0 2

How do you build a reliable real-time traffic update system? This case study explores the architecture of a web-based road information platform, detailing its conceptual model, admin workflows, and a rigorous performance evaluation based on the ISO/IEC 25010 standard.

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