Apache Kafka is a distributed event-based streaming platform. It is free and open-source. Kafka was introduced at LinkedIn for messaging queue. This article covers top interview questions and answers on Apache Kafka in 2022.
Introduction to Apache Kafka
Apache Kafka is an Open-Source distributed event-based streaming platform initially used by LinkedIn developers. It is now used by thousands of companies throughout the world to implement high efficiency in applications.
Almost all of the Manufacturing, Insurance, Telecom and Banks industries use Apache Kafka for events processing, data analytics and high-performance data pipelines.
Prepare from top Python questions and answers for Freshers.
Top Apache Kafka Interview Questions And Answers
Let’s start with top interview questions and answers on Apache Kafka in 2022.
What is Apache Kafka?
Apache Kafka is a distributed streaming platform.
What inspired the development of Apache Kafka?
Apache Kafka was inspired by the need for a high-throughput, low-latency messaging system.
What is the difference between Apache Kafka and Amazon Kinesis?
Apache Kafka is a distributed streaming platform, while Amazon Kinesis is a cloud-based service for real-time data processing.
What is the purpose of Apache Kafka?
Apache Kafka is used to publish and subscribe to streams of records. There are consumers and producers. Producers produce the contents and consumers gets the contents in real-time.
What are the uses of Kafka?
Apache Kafka is used for real-time data processing, data streaming, and log aggregation.
What are some examples of data that are transferred through Apache Kafka?
Examples of data that are transferred through Apache Kafka include sensor data, financial data, and clickstream data.
What are some of the key features of Apache Kafka?
Some of the key features of Apache Kafka include high throughput, low latency, and fault tolerance. It provides a unified platform for handling real-time data feeds.
What are some of Apache Kafka’s limitations?
Apache Kafka does not provide a query language, and it is not a database.
What is Apache Kafka’s license?
Apache Kafka’s license is Apache License 2.0.
What is a Producer?
A Producer is a program that sends messages to a Kafka cluster.
What is a Consumer?
A Consumer is a program that receives messages from a Kafka cluster.
What is a Log?
A Log is a record of the activity in a Kafka cluster.
What is a Topic?
A Topic is a named stream of records. Kafka topics are like directories, and messages are like files. Kafka topics are organized into a hierarchy. A topic can have zero or more child topics. A topic can also have zero or more parents. The root topic has no parent.
How do you send an event to a Topic?
You send an event to a Topic by using a Producer.
What is Kafka Streams?
Kafka Streams is a library for building stream processing applications.
What is Kafka Connect?
Kafka Connect is a library for connecting applications to Kafka.
What is the data retention period for Kafka?
The data retention period for Kafka is configurable. By default it is 7 days.
What is the default key for Kafka?
The default key for Kafka is the partition key.
What is the queue duration for Kafka?
The Kafka cluster keeps track of all messages and stores them for a while, even if they have been read and the message is no longer needed. This way, if someone wants to read the message again, they can till a specified period of time. The queue duration is configurable.
What is the replication factor for Kafka?
Replication factor is the number of copies of a topic in a Kafka cluster. If you want to read/write from/to a topic, you need to connect to a broker hosting the topic. Kafka brokers are like servers in a cluster. They store copies of topics.
What is a Kafka message?
A Kafka message is a record of the activity in a Kafka cluster.
What are the required Kafka properties?
The required Kafka properties include the broker id, the group id, the log id, and the topic.
What is a Kafka buffer time?
A Kafka buffer time is the amount of time that a message is buffered before it is written to disk.
What is the difference between message brokers and message queue?
Message brokers are used for real-time data processing, while message queues are used for asynchronous messaging.
What is Apache Kafka’s interactive shell?
Apache Kafka’s interactive shell is a tool that is used to send and receive messages.
This article presents top interview questions and answers for Apache Kafka that will help you prepare interview in 2022. I will keep updating the list with more questions and answers in future.
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