Skill Topic · Cinematic

📘 MongoDB — Sharding

Horizontal scaling — data ko split karo multiple servers pe! 📊

Overview

📘 MongoDB — Sharding — Quick Facts

📌

Feature: Ranged

🎯

Distribution: Uneven possible

⚡

Range queries: Efficient ✅

🔑

Monotonic keys: Hotspot! ❌

Topic 1

📌 1. Sharding Kya Hai?

📚 ` Vertical Scaling (Scale Up): ┌───────────────┐ │ BIGGER SERVER │ ← More RAM, CPU, Disk…

Topic 2

📌 2. Sharded Cluster Architecture

💡 ` ┌─────────────────────────────────────────────┐ │ APPLICATION │…

Topic 3

📌 3. Shard Key

🎯 `javascript // ═══ Shard key = data ko kaise split karein ═══ // Collection ko shard…

Topic 4

📌 4. Comparison: Ranged vs Hashed

⭐ | Feature | Ranged | Hashed | |---------|--------|--------| | Distribution | Uneven…

Topic 5

📌 5. Chunks & Balancer

🔑 ` Data Chunks: • Default chunk size: 128 MB (configurable) • Data split into chunks based…

Topic 6

📌 6. Setup Sharded Cluster

✨ `bash ═══ Step 1: Start config servers (replica set) ═══ mongod --configsvr --replSet…

Topic 7

📌 7. Query Routing

🌟 ` Targeted Query (efficient): mongos → knows shard key → sends to 1 shard only!…

Topic 8

📌 8. Operations on Sharded Collections

🚀 `javascript // ═══ Inserts ═══ // Must include shard key! db.users.insertOne({ name:…

Topic 9

📌 9. Zones (Tag-Aware Sharding)

📚 `javascript // ═══ Data ko specific shards pe force karo ═══ // Use case: geo-compliance…

Topic 10

📌 10. Choosing Shard Key — Best Practices

💡 ` Shard Key Selection criteria: ┌─────────────────────────────────────────────┐ │ GOOD…

Topic 11

📌 11. Monitoring & Maintenance

🎯 `javascript // ═══ Cluster status ═══ sh.status() // Prints: shards, databases,…

Topic 12

✅ Summary

⭐ KEY POINTS: - Sharding = horizontal scaling, data across multiple servers - Architecture:…

Comparison

📌 4. Comparison: Ranged vs Hashed

⚖️

Distribution: Uneven possible

⚖️

Range queries: Efficient ✅

⚖️

Monotonic keys: Hotspot! ❌

Quick Quiz

Quiz — Question 1

📘 MongoDB — Sharding ka sabse sahi definition kya hai?

Quick Quiz

Quiz — Question 2

📘 MongoDB — Sharding ka 'Distribution' kya hai?

Complete! 🎉

📘 MongoDB — Sharding Complete!

Aliens School · HIEN · Cinematic Knowledge

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