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IT Learning Made Simple
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IT Learning Made Simple

Learn IT: using simple language and everyday examples to study.

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Latest from IT Learning Made Simple

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IT Learning Made Simple
IT Learning Made Simple
Jul 21, 2026 · Fundamentals

Key Takeaways from 'Designing Large-Scale Distributed Systems'

This note distills the core engineering practices for building and operating large‑scale distributed systems, covering system definition, distributed vs single‑node trade‑offs, CAP theorem choices, consistency levels, transaction patterns, load‑balancing algorithms, cache strategies, message‑queue reliability, coordination services like ZooKeeper, and essential design principles.

CAP theoremDistributed SystemsZooKeeper
0 likes · 11 min read
Key Takeaways from 'Designing Large-Scale Distributed Systems'
IT Learning Made Simple
IT Learning Made Simple
Jul 20, 2026 · Backend Development

Key Takeaways from “Architecture Is the Future”: Scalable Web Architecture Principles

The article distills the core ideas of the book “Architecture Is the Future”, explaining why scalability is essential for modern web services and presenting eight design principles—horizontal scaling, load balancing, fault‑tolerance, data sharding, caching, asynchronous processing, monitoring, and automation—along with organizational patterns, capacity‑planning formulas, performance‑optimization steps, and high‑availability strategies.

Web Scalingcachingcapacity planning
0 likes · 11 min read
Key Takeaways from “Architecture Is the Future”: Scalable Web Architecture Principles
IT Learning Made Simple
IT Learning Made Simple
Jul 19, 2026 · Fundamentals

Key Takeaways from “System Architecture Design”: A Structured Overview

This article provides a comprehensive, step‑by‑step overview of system architecture design, covering definitions, quality attributes, architectural styles, design processes, decision‑making, validation methods, documentation practices, and core principles for building complex software systems.

architectural stylesarchitecture decision recorddesign process
0 likes · 10 min read
Key Takeaways from “System Architecture Design”: A Structured Overview
IT Learning Made Simple
IT Learning Made Simple
Jul 18, 2026 · Fundamentals

Key Takeaways from Clean Architecture: A Practical Summary

This article distills the core concepts of Robert C. Martin’s Clean Architecture, covering layered design, SOLID principles, component cohesion and coupling rules, boundary strategies, the onion model, and why databases are merely infrastructure, all illustrated with concrete code examples and diagrams.

SOLIDclean architecturedependency inversion
0 likes · 12 min read
Key Takeaways from Clean Architecture: A Practical Summary
IT Learning Made Simple
IT Learning Made Simple
Jul 17, 2026 · Fundamentals

How to Evaluate an Architecture: The Five Key Dimensions

The article presents a systematic framework for objectively assessing software architectures across five dimensions—functionality, quality, cost, risk, and team capability—detailing specific metrics, evaluation methods, scoring tables, and a practical workflow to guide informed architectural decisions.

Evaluation FrameworkSoftware Architecturearchitecture evaluation
0 likes · 10 min read
How to Evaluate an Architecture: The Five Key Dimensions
IT Learning Made Simple
IT Learning Made Simple
Jul 16, 2026 · R&D Management

Architecture Rot: How Code Degenerates from "Sweet" to "Beast"

The article defines Architecture Rot as the gradual decay of system design, outlines its four stages—healthy, debt accumulation, degradation, and crisis—details code‑level symptoms, business and technical causes, quantitative detection metrics, and presents a step‑by‑step governance plan including prevention, regular health checks, and incremental refactoring using the strangler‑fig pattern.

Software ArchitectureTechnical Debtarchitecture
0 likes · 11 min read
Architecture Rot: How Code Degenerates from "Sweet" to "Beast"
IT Learning Made Simple
IT Learning Made Simple
Jul 15, 2026 · Fundamentals

Technical Debt: Why Every Debt Must Be Repaid

The article explains the concept of technical debt, its origins, explicit and implicit forms, sources, interest costs, calculation methods, management practices—including identification, prioritization, repayment strategies, prevention measures, tooling with SonarQube, workshops, OKRs—and debunks common myths about aiming for zero debt.

AgileSonarQubeTechnical Debt
0 likes · 12 min read
Technical Debt: Why Every Debt Must Be Repaid
IT Learning Made Simple
IT Learning Made Simple
Jul 14, 2026 · Backend Development

Architecture Lessons Learned from Real‑World Failures

The article shares four real‑world failure cases—over‑splitting into microservices, skipping performance testing, accumulating technical debt, and relying on a single‑point database—to illustrate why careful architectural decisions, thorough testing, debt repayment, and high‑availability design are essential for sustainable software systems.

Technical Debthigh availabilitymicroservices
0 likes · 9 min read
Architecture Lessons Learned from Real‑World Failures
IT Learning Made Simple
IT Learning Made Simple
Jul 13, 2026 · R&D Management

Treating Architecture Decisions as a Black Box: Why ADRs Matter

This article explains why Architecture Decision Records (ADRs) are essential, defines them as a “black box” for recording decisions, outlines their value, formats, lifecycle, creation process, management tools, and provides concrete ADR examples such as using JWT for authentication and Kafka for messaging.

ADRarchitecturedocumentation
0 likes · 12 min read
Treating Architecture Decisions as a Black Box: Why ADRs Matter
IT Learning Made Simple
IT Learning Made Simple
Jul 12, 2026 · Game Development

From Yang Le Ge Yang to Ba Le Ge Guan: Inside the IT Architecture Behind a Viral Mini‑Game

The article breaks down the gameplay of "Ba Le Ge Guan", compares it with "Yang Le Ge Yang", and explains the three‑layer WeChat mini‑game architecture, cross‑platform rendering, performance tricks, and cloud services that make the game instantly playable, smooth, and highly engaging.

Cross-platformGame ArchitectureGameplay Mechanics
0 likes · 9 min read
From Yang Le Ge Yang to Ba Le Ge Guan: Inside the IT Architecture Behind a Viral Mini‑Game