Cassandra Interview Questions

Check out 30 of the most common Cassandra interview questions and take an AI-powered practice interview

NoSQLWide ColumnCQLDistributedHigh Availability
30+
Questions
12
Basic
13
Intermediate
5
Advanced
Q1

What is Cassandra and when should you use it?

BasicFundamentals
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Q2

How do you connect to Cassandra?

BasicConnections
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Q3

What are the basic data types in Cassandra?

BasicData Types
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Q4

How do you create and manage databases in Cassandra?

BasicDatabase Management
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Q5

What are tables/collections in Cassandra?

BasicTables & Schema
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Q6

How do you perform CRUD operations in Cassandra?

BasicCRUD Operations
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Q7

What are primary keys and foreign keys in Cassandra?

BasicKeys & Relationships
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Q8

How do you write basic queries in Cassandra?

BasicQueries
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Q9

What are joins/lookups in Cassandra?

BasicJoins & Relationships
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Q10

How do you handle NULL values in Cassandra?

BasicNULL Handling
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Q11

What are constraints in Cassandra?

BasicConstraints
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Q12

How do you import/export data in Cassandra?

BasicData Migration
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Q13

How do you optimize queries in Cassandra?

IntermediateQuery Optimization
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Q14

What is indexing in Cassandra?

IntermediateIndexing
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Q15

How do you handle transactions in Cassandra?

IntermediateTransactions
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Q16

What are stored procedures/functions in Cassandra?

IntermediateStored Procedures
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Q17

How do you implement data validation in Cassandra?

IntermediateValidation
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Q18

What is normalization/denormalization in Cassandra?

IntermediateNormalization
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Q19

How do you handle concurrent access in Cassandra?

IntermediateConcurrency
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Q20

What are triggers in Cassandra?

IntermediateTriggers
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Q21

How do you implement full-text search in Cassandra?

IntermediateSearch
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Q22

What is query execution plan in Cassandra?

IntermediateExecution Plans
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Q23

How do you handle large datasets in Cassandra?

IntermediateBig Data
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Q24

What are views in Cassandra?

IntermediateViews & Templates
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Q25

How do you monitor performance in Cassandra?

IntermediateMonitoring
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Q26

How do you implement sharding in Cassandra?

AdvancedSharding
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Q27

What is replication strategy in Cassandra?

AdvancedReplication
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Q28

How do you handle distributed Cassandra?

AdvancedDistributed Systems
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Q29

What are advanced optimization techniques in Cassandra?

AdvancedAdvanced Topics
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Q30

How do you implement high availability in Cassandra?

AdvancedHigh Availability
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Companies Hiring Cassandra

Google
Amazon
Microsoft
Meta
Netflix
Uber
PayPal
LinkedIn
Spotify
Airbnb

Salary Insights

Average in India
₹8-28 LPA

Frequently Asked Questions

What is Cassandra used for?

Cassandra is widely used for storing, managing, and retrieving data efficiently. It's valued for its performance, reliability, and extensive ecosystem.

How long does it take to learn Cassandra?

Learning Cassandra basics typically takes 1-3 months of dedicated study. Achieving proficiency requires 6-12 months of practice and real-world projects. Mastery comes with years of experience and continuous learning.

What are the job prospects for Cassandra developers?

Cassandra developers are in high demand across industries. With strong Cassandra skills, you can pursue roles in database administration, data engineering, with competitive salaries ranging from ₹8-28 LPA.

What prerequisites are needed for learning Cassandra?

Understanding of data structures and basic SQL are helpful prerequisites for learning Cassandra.

Which companies use Cassandra?

Major companies using Cassandra include Google, Amazon, Microsoft, Meta, Netflix, and many more. Cassandra is adopted across startups to enterprise organizations.

Introduction

Preparing for database interviews with Cassandra expertise? Database knowledge is fundamental for any developer working with data-driven applications.

Cassandra is widely used for data storage, retrieval, and management. Understanding its architecture, query optimization, and best practices is essential.

This guide covers Cassandra interview questions ranging from basic CRUD operations to advanced topics like indexing, replication, and performance tuning.

Whether you're a backend developer or data engineer, these questions will help you demonstrate strong database expertise.