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============================================================================ Article Name : CAP…

Overview

Copyright (c) A|iens. All rights reserved. — Quick Facts

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Property: Detail

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Full Name: CAP Theorem

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Also Known As: Brewer's Theorem

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Type: Distributed systems theorem /…

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Infobox

📚 | Property | Detail | |---|---| | Full Name | CAP Theorem | | Also Known As | Brewer's…

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Teeno Properties Explained

💡 CAP theorem ke three letters me se har ek ek specific guarantee represent karta hai. Inhe…

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Real-Life Analogy

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✅ Consistent: Jab system open hoga…

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❌ Available nahi: Customers ko…

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✅ Partition tolerant: System…

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❌ Consistent nahi: Delhi me naya…

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Pick 2 of 3

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System data consistency ensure…

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Agar kuch nodes unreachable hain,…

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Data kabhi stale/wrong nahi milega…

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System hamesha respond karega

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CAP Triangle Diagram

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CP edge (Consistency + Partition…

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AP edge (Availability + Partition…

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CA edge (Consistency +…

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Center (CAP): Teeno simultaneously…

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Real-World Database Classifications

✨ Yeh table popular databases ko unki CAP category ke hisaab se classify karta hai: |…

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Beyond Pick 2

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Consistency spectrum hai: Strong →…

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Availability spectrum hai: 99.999%…

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Tum har property ka degree tune…

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Data consistency maintain karein…

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PACELC Theorem

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Partition ke dauran: A choose karo…

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Normal operation me (no…

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PA/EL systems: Speed aur…

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PC/EC systems: Correctness…

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Consistency Models Spectrum

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Banking / Payments:…

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Social Media Feed: Eventual…

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E-commerce Cart: Read-your-writes…

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Config/Feature Flags: Causal…

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Real-World Scenarios

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DNS servers globally distributed…

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DNS records cache hote hain…

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Agar root server unreachable ho —…

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Records eventually consistent hain…

Topic 11

5 Common Mistakes

🎯 Mistake 1: "CAP Means Pick Exactly 2, Always" Bahut log samajhte hain ke database…

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6 Best Practices

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Critical reads: Strong consistency

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Non-critical reads: Eventual…

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Last-writer-wins (timestamp-based)…

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Merge/CRDT — automatic…

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Interview Questions

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Banking system: CP choose karenge…

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Social media feed: AP choose…

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MongoDB (default): Primary node pe…

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Zookeeper: Distributed consensus…

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Glossary

✨ | # | Term | Definition | |---|---|---| | 1 | CAP Theorem | Distributed system me…

Diagram

Visual Flow

📊 Diagram visualization — details in narration

Quiz — Question 1

Quick Quiz

Quiz — Question 2

Complete! 🎉

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