There are multiple types of keys in Cassandra. Namely:

1. Primary Key
2. Partitioning Key
3. Clustering Key

Let’s go over each of these to understand them better.

Primary Key

Each table requires a primary key. A primary key can be either one field or multiple fields combined. The primary key has to be unique for each record. Otherwise, Cassandra will do an upsert if you try to add records with a primary key that already exists.

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