Practice Writes In Cassandra (1.7) - Cloud Storage: Key-value Stores/NoSQL
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Writes in Cassandra

Practice - Writes in Cassandra

Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What is the main role of the Commit Log in Cassandra?

💡 Hint: Consider what happens if a node crashes.

Question 2 Easy

What does a Memtable do?

💡 Hint: Think about where data is temporarily stored before being permanent.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What happens first when a write request is received by a Cassandra node?

It gets stored in the Memtable.
It is written to the Commit Log.
It is sent to replica nodes.

💡 Hint: Think about which component ensures that data can be recovered.

Question 2

True or False: A tombstone represents immediate deletion of data in Cassandra.

True
False

💡 Hint: Consider how deletions are handled in Cassandra.

1 more question available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Given a scenario where multiple write requests hit a Cassandra cluster, explain how the system ensures data consistency across replicas.

💡 Hint: Consider how a quorum might impact this scenario.

Challenge 2 Hard

Discuss the trade-offs of setting a high replication factor in a Cassandra database concerning performance and reliability.

💡 Hint: Think about how write operations are affected by increased data copies.

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Reference links

Supplementary resources to enhance your learning experience.