Python consumer in Kafka - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is a Python consumer in Kafka?

A Python consumer is a program that reads messages from Kafka topics. It listens to the Kafka server and processes incoming data streams.

beginner

Which Python library is commonly used to create a Kafka consumer?

The 'confluent-kafka' and 'kafka-python' libraries are commonly used to create Kafka consumers in Python.

beginner

What is the purpose of the 'subscribe()' method in a Python Kafka consumer?

The 'subscribe()' method tells the consumer which Kafka topics to listen to for incoming messages.

intermediate

How does a Python Kafka consumer read messages from a topic?

It uses a loop to call the 'poll()' or 'consume()' method repeatedly, which fetches messages from the Kafka topic.

intermediate

Why is it important to commit offsets in a Kafka consumer?

Committing offsets tells Kafka which messages have been processed, so the consumer can resume from the right place if restarted.

What does a Kafka consumer do in Python?

A Sends messages to Kafka topics

B Creates Kafka topics

C Reads messages from Kafka topics

D Deletes Kafka topics

A Kafka consumer reads messages from Kafka topics to process data streams.

Which method subscribes a Python Kafka consumer to topics?

A send()

B connect()

C publish()

D subscribe()

The subscribe() method tells the consumer which topics to listen to.

What is the role of 'poll()' in a Python Kafka consumer?

A Fetch messages from Kafka

B Create new topics

C Send messages to Kafka

D Commit offsets

poll() fetches messages from Kafka topics for the consumer to process.

Why commit offsets in Kafka consumer?

A To delete messages

B To track processed messages

C To create topics

D To send messages

Committing offsets tracks which messages have been processed to avoid reprocessing.

Which Python library is NOT typically used for Kafka consumers?

A requests

B confluent-kafka

C kafka-python

D None of the above

'requests' is for HTTP requests, not Kafka consumers.

Explain how a Python Kafka consumer subscribes to topics and reads messages.

Think about how the consumer listens and fetches data continuously.

Describe why committing offsets is important in Kafka consumers.

Consider what happens if the consumer stops and starts again.