hjun656416519's honest review, Cassandra, guaranteeing 10,000 TPS, supporting Discord and Netflix course

It was my first time encountering a database with this kind of structure, so it felt a bit unfamiliar and difficult, but it was a lecture where I could learn not only about databases from a simple perspective but also about distributed environments. The course materials were also abundant, so even though it was unfamiliar, I don't think it was too difficult to learn.

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