Fundamentals of Database Engineering udemy course (link redirects to udemy with coupon)
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Discord engineering goes into details of how they migrated from Cassandra to ScyllaDB, improved the performance of their reads and writes and rearchitected their backend to support the new load. It is an interesting episode lets get into it
0:00 Intro
1:50 Relational vs Distributed
7:00 The Cassandra Troubles
11:00 SnowFlake vs UUID
14:30 B+Tree
19:20 B+Tree and SSDs
25:30 LSM Trees
31:00 Hot partitions
36:00 Cassandra Garbage Collector Pauses
40:00 Changing the Architecture
45:00 The Data Services
55:00 The Migration
1:02:00 Zoned Named Spaces
1:04:00 Summary
Article here How Discord Stores Trillions of Messages
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Fundamentals of Backend Engineering Design patterns udemy course (link redirects to udemy with coupon)
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Hussein