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 👉 Don’t forget to LIKE, SHARE & SUBSCRIBE to ChalkToCode for more tech content. #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