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System Design Quiz Practice
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Question 1 of 1
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System Design
Why did Discord migrate trillions of messages from Apache Cassandra to ScyllaDB?
A
Because ScyllaDB supports SQL JOIN queries
B
Because ScyllaDB is written in C++ on a thread-per-core architecture, eliminating JVM garbage collection pauses that caused >1,000ms p99 latency spikes
C
Because Apache Cassandra cannot store more than 1 billion rows
D
Because ScyllaDB is free while Cassandra requires licensing
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