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๐Ÿ“˜ MongoDB โ€” Performance & Profiling

Slow queries dhundho, optimize karo, production-ready banao! โšก

Topic 1
๐Ÿ“ฅ ๐Ÿ“ฅ ๐Ÿง  ๐Ÿ”ฌ ๐Ÿ’ก ๐ŸŽฏ

๐Ÿ“Œ 1. explain() โ€” Query Analysis

๐Ÿ“š `javascript // โ•โ•โ• explain() modes โ•โ•โ• db.users.find({ age: { $gt: 25 } }).explain() //โ€ฆ
Topic 2
๐Ÿ’ก ๐Ÿ“Š ๐Ÿ”ฌ

๐Ÿ“Œ 2. explain() Reading Guide

๐Ÿ’ก ` Winning Plan Stages: COLLSCAN โ† Collection scan (NO index) โ€” BAD! IXSCAN โ† Index scan โ€”โ€ฆ
Topic 3
๐Ÿ”’

๐Ÿ“Œ 3. Database Profiler

๐ŸŽฏ `javascript // โ•โ•โ• Enable profiling โ•โ•โ• db.setProfilingLevel(0) // Off (default)โ€ฆ
Topic 4
โญ

๐Ÿ“Œ 4. currentOp โ€” Running Operations

โญ `javascript // โ•โ•โ• See what's running RIGHT NOW โ•โ•โ• db.currentOp() // โ•โ•โ• Long-runningโ€ฆ
Topic 5
๐Ÿ“ฅ ๐Ÿ“ฅ ๐Ÿง  ๐Ÿ”ฌ ๐Ÿ’ก ๐ŸŽฏ

๐Ÿ“Œ 5. serverStatus & Stats

๐Ÿ”‘ `javascript // โ•โ•โ• Server stats โ•โ•โ• db.serverStatus() // Key sections:โ€ฆ
Topic 6
โœจ ๐Ÿ“Š ๐Ÿ”ฌ

๐Ÿ“Œ 6. Index Optimization

โœจ `javascript // โ•โ•โ• Find missing indexes โ•โ•โ• // Step 1: Enable profilerโ€ฆ
Topic 7
๐Ÿ”’

๐Ÿ“Œ 7. Query Optimization Patterns

๐ŸŒŸ `javascript // โ•โ•โ• 1. Covered query (fastest!) โ•โ•โ• db.users.createIndex({ email: 1, name:โ€ฆ
Topic 8
๐Ÿš€

๐Ÿ“Œ 8. Write Performance

๐Ÿš€ `javascript // โ•โ•โ• 1. Bulk operations โ•โ•โ• // BAD (1000 separate calls): for (let i = 0; iโ€ฆ
Topic 9
๐Ÿ“ฅ ๐Ÿ“ฅ ๐Ÿง  ๐Ÿ”ฌ ๐Ÿ’ก ๐ŸŽฏ

๐Ÿ“Œ 9. WiredTiger Cache

๐Ÿ“š ` WiredTiger Storage Engine Cache: โ”Œโ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ” โ”‚โ€ฆ
Topic 10
โœจ

๐Ÿ“Œ 10. Monitoring Commands

๐Ÿ’ก `javascript // โ•โ•โ• mongostat (CLI) โ•โ•โ• // mongostat --host localhost:27017 // Shows:โ€ฆ
Topic 11
๐Ÿ”’

๐Ÿ“Œ 11. Performance Checklist

๐ŸŽฏ ` โ”Œโ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ” โ”‚ Performance Optimizationโ€ฆ
Topic 12
โญ

โœ… Summary

โญ KEY POINTS: - explain("executionStats") = query performance analyze karo - COLLSCAN =โ€ฆ
Quick Quiz
๐Ÿง  QUIZ TIME

Quiz โ€” Question 1

๐Ÿ“˜ MongoDB โ€” Performance & Profiling ka sabse sahi definition kya hai?

Complete! ๐ŸŽ‰
COMPLETE

๐Ÿ“˜ MongoDB โ€” Performance & Profiling Complete!

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โœ…

๐Ÿ“˜ MongoDB โ€” Performance & Profiling Complete

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