Wiki Article · Cinematic

Deadlock (Computing)

Deadlock (computing) ek specific situation hai jab do ya zyada database transactions ya computing…

Overview

Deadlock (Computing) — Quick Facts

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Property: Detail

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Name: Deadlock (Computing / Database)

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Category: Database, Backend Engineering,…

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Context: RDBMS transactions, Row/Table…

Topic 1

Infobox

📚 | Property | Detail | |---|---| | Name | Deadlock (Computing / Database) | | Category |…

Topic 2

Kya Hota Hai Database Deadlock

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Person A bridge ke left half par…

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Person B bridge ke right half par…

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Dono side nahi hateyenge → stuck →…

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General deadlock: OS resources,…

Topic 3

Mermaid Diagram — Database Deadlock Scenario

🎯 `mermaid sequenceDiagram participant T1 as Transaction T1 participant DB as Database…

Topic 4

Lock Types in Databases

⭐ Deadlocks samajhne ke liye pehle lock types samajhna zaroori: | Lock Type | Abbreviation…

Topic 5

Transaction Isolation Levels aur Deadlock Risk

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Higher isolation = more locks =…

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Lower isolation = fewer locks =…

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Balance zaroori hai — application…

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Deadlock Detection in RDBMS

✨ Detection Methods | Method | How It Works | Used By | |---|---|---| | Wait-for Graph |…

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Deadlock Resolution — Victim Selection

🌟 Jab RDBMS deadlock detect karta hai, to ek transaction ko victim choose karke rollback…

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Deadlock in Application Layer

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ORMs (Django ORM, SQLAlchemy,…

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Developer ko pata nahi hota ke…

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ORM-generated queries ka lock…

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Application-level deadlock: Thread…

Topic 9

Monitoring aur Observability

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MySQL: SHOW ENGINE INNODB STATUS —…

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PostgreSQL: pg_locks view +…

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SQL Server: Extended Events,…

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Oracle: V$LOCK, DBA_WAITERS, alert…

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Common Mistakes

💡 | Mistake | Problem | Solution | |---|---|---| | No retry on deadlock error | Application…

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Best Practices

🎯 1. Short transactions. Transactions jitni chhoti, utna kam lock hold time, utna kam…

Diagram

Visual Flow

📊 Diagram visualization — details in narration

Quiz — Question 1

Deadlock (Computing) ka sabse sahi definition kya hai?

Quick Quiz

Quiz — Question 2

Deadlock (Computing) ka 'Name' kya hai?

Complete! 🎉

Deadlock (Computing) Complete!

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