The WRITE FLOW of ClickHouse Explained 🚀

In this video, we’ll deep dive into the COMPLETE WRITE FLOW of ClickHouse 🚀

You’ll learn:
✅ How data is inserted in ClickHouse
✅ What happens inside BUFFER
✅ How PARTS are created
✅ MERGE process explained
✅ How data reaches STORAGE
✅ Why ClickHouse is insanely FAST ⚡

If you are preparing for:
🔥 System Design Interviews
🔥 Data Engineering Interviews
🔥 Backend Engineering Roles
🔥 Big Data & Analytics Projects

Then this video is a MUST WATCH.

📌 Topics Covered:
- ClickHouse Architecture
- Write Path
- MergeTree Internals
- Buffer & Storage
- Columnar Database Concepts
- High Performance Databases

💻 Perfect for:
Software Engineers | Data Engineers | Backend Developers | SDE Interviews

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#ClickHouse #DataEngineering #SystemDesign #BackendEngineering #BigData #DatabaseInternals #TechVideos #viral #trending #ChalkToCode
00:00 - Introduction to ClickHouse Write Flow
01:28 - Chapter 1: Video Recap & Table Setup (Creating the add_events table)
03:42 - Chapter 2: The Insert Journey (How ClickHouse receives and processes data)
05:04 - Why ClickHouse sorts data during write (Compression, Indices, and Merging)
09:33 - Understanding Granules (The 8192-row concept)
14:17 - What are Parts and Files on Disk? (Internal storage structure)
16:43 - Deep dive into .bin files (Actual data storage)
18:31 - Deep dive into .mrk3 files (The "GPS" for data lookup)
22:40 - The Primary Index file (primary.idx)
26:09 - Min-Max Index and Skip Indices
28:57 - Background Merge Process (The role of the MergeTree engine)
33:48 - Concurrent Reads during Merging (MVCC style reference counting)
35:32 - Best Practices for writing to ClickHouse

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