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Skill Topic ยท Cinematic

๐Ÿ“˜ MongoDB โ€” Indexes

Queries ko rocket-fast banao โ€” indexes ka pura game! ๐Ÿš€

Topic 1
๐Ÿ“š

๐Ÿ“Œ 1. Index Kya Hai?

๐Ÿ“š ` Without Index (Collection Scan): โ”Œโ”€โ”€โ”โ”Œโ”€โ”€โ”โ”Œโ”€โ”€โ”โ”Œโ”€โ”€โ”โ”Œโ”€โ”€โ”โ”Œโ”€โ”€โ”โ”Œโ”€โ”€โ”โ”Œโ”€โ”€โ”โ”Œโ”€โ”€โ”โ”Œโ”€โ”€โ”โ€ฆ
Topic 2
๐Ÿ’ก ๐Ÿ“Š ๐Ÿ”ฌ

๐Ÿ“Œ 2. Default _id Index

๐Ÿ’ก `javascript // โ•โ•โ• Har collection me _id par index automatically banta hai โ•โ•โ•โ€ฆ
Topic 3
๐Ÿ”’

๐Ÿ“Œ 3. Single Field Index

๐ŸŽฏ `javascript // โ•โ•โ• Ek field par index โ•โ•โ• db.users.createIndex({ email: 1 }) // 1 =โ€ฆ
Topic 4
โญ

๐Ÿ“Œ 4. Compound Index

โญ `javascript // โ•โ•โ• Multiple fields par index โ•โ•โ• db.users.createIndex({ city: 1, age: -1โ€ฆ
Topic 5
๐Ÿ“ฅ ๐Ÿ“ฅ ๐Ÿง  ๐Ÿ”ฌ ๐Ÿ’ก ๐ŸŽฏ

๐Ÿ“Œ 5. Unique Index

๐Ÿ”‘ `javascript // โ•โ•โ• Duplicate values prevent karo โ•โ•โ• db.users.createIndex( { email: 1 },โ€ฆ
Topic 6
โœจ ๐Ÿ“Š ๐Ÿ”ฌ

๐Ÿ“Œ 6. Partial Index

โœจ `javascript // โ•โ•โ• Index sirf specific documents par โ•โ•โ• db.orders.createIndex( { status:โ€ฆ
Topic 7
๐Ÿ”’

๐Ÿ“Œ 7. Sparse Index

๐ŸŒŸ `javascript // โ•โ•โ• Sirf documents jahan field EXISTS โ•โ•โ• db.users.createIndex( {โ€ฆ
Topic 8
๐Ÿš€

๐Ÿ“Œ 8. TTL Index

๐Ÿš€ `javascript // โ•โ•โ• Auto-delete documents after time โ•โ•โ• db.sessions.createIndex( {โ€ฆ
Topic 9
๐Ÿ“ฅ ๐Ÿ“ฅ ๐Ÿง  ๐Ÿ”ฌ ๐Ÿ’ก ๐ŸŽฏ

๐Ÿ“Œ 9. Text Index

๐Ÿ“š `javascript // โ•โ•โ• Full text search ke liye โ•โ•โ• db.articles.createIndex({ title: "text",โ€ฆ
Topic 10
๐Ÿ’ก ๐Ÿ“Š ๐Ÿ”ฌ

๐Ÿ“Œ 10. Wildcard Index

๐Ÿ’ก `javascript // โ•โ•โ• Dynamic/unknown fields ke liye โ•โ•โ• db.products.createIndex({โ€ฆ
Topic 11
๐Ÿ”’

๐Ÿ“Œ 11. Hashed Index

๐ŸŽฏ `javascript // โ•โ•โ• Equality queries ke liye (no range!) โ•โ•โ• db.users.createIndex({ email:โ€ฆ
Topic 12
โญ

๐Ÿ“Œ 12. Covered Query

โญ `javascript // โ•โ•โ• Query + Projection sirf index se satisfy ho โ•โ•โ• // Collection takโ€ฆ
Topic 13
๐Ÿ“ฅ ๐Ÿ“ฅ ๐Ÿง  ๐Ÿ”ฌ ๐Ÿ’ก ๐ŸŽฏ

๐Ÿ“Œ 13. Index Management

๐Ÿ”‘ `javascript // โ•โ•โ• List all indexes โ•โ•โ• db.users.getIndexes() // โ•โ•โ• Drop index โ•โ•โ•โ€ฆ
Topic 14
โœจ ๐Ÿ“Š ๐Ÿ”ฌ

๐Ÿ“Œ 14. Index Best Practices

โœจ ` โœ… DO: โ”€โ”€โ”€โ”€โ”€ โ€ข Query patterns pehle samjho, phir index banao โ€ข ESR rule follow karoโ€ฆ
Topic 15
๐Ÿ”’

โœ… Summary

๐ŸŒŸ KEY POINTS: - Index = sorted B-tree for fast lookups (collection scan avoid) - _id indexโ€ฆ
Quick Quiz
๐Ÿง  QUIZ TIME

Quiz โ€” Question 1

๐Ÿ“˜ MongoDB โ€” Indexes ka sabse sahi definition kya hai?

Complete! ๐ŸŽ‰
COMPLETE

๐Ÿ“˜ MongoDB โ€” Indexes Complete!

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โœ…

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