B-Trees, Indexing and TeraBytes of Data || System Design by
In this video, we understand what are B-Trees, how they work, how we leverage them to create indexes in Databases, how they are different from LSM Trees, the pros and cons of B-Trees, etc. The DDIA Book is a great recommendation for System Design and I would like to summarise the chapters and my learnings here.
References
DDIA Book: https://amzn.to/3B6TJcm
System Design Playlist: https://bit.ly/system-design-course
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Chapters
00:00 Sponsor
0:28 Preview of B-Tree Insertion Animation
0:46 Introduction to B-Trees
1:46 Short Recap of LSM Trees
2:22 How B-Trees are different?
3:21 How B-Trees Work?
5:55 How are Reads processed in B-Trees?
7:03 How B-Trees make Reads faster?
9:06 How B-Trees Handle Page Splits During Writes?
10:55 Summary of how Writes are processed in B-Trees
11:57 Write Ahead Log - How Crashes Are Handled in B-Trees?
12:51 Difference Between LSM Trees v/s B-Trees Indexing
16:30 Primary vs Secondary Indexes
17:30 What are Heap Files in B-Tree Indexing?
18:50 What are Clustered Indexes and Why are they needed?
20:03 What are Covering Indexes and their importance?
20:25 Recap of Indexing in DataBases
21:03 Can B-Trees handle MultiColumn Indexes?
22:00 InMemory DataBases like MemSQL
23:55 Animations Showing Insertion and Deletions in B-Trees
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