Apache Kafka Producer
Apache Kafka is a distributed messaging system used to move data reliably between different applications. In Kafka, data flows through topics, and the component that sends data into Kafka is called a Kafka Producer.
What Is a Kafka Producer?
A Kafka Producer is an application or service that creates messages (data) and publishes (send) them to Kafka topics. A Kafka producer is like a sender that puts data into Kafka so other applications (consumers) can read and process it later.
Messages are stored in the form of key-values in the partitions of the topics.
Important Interview Q&A
Q. How does a Producer decide which partition to send a message to?
Q. How does a Producer handle message failures?
Q. What's the difference between synchronous and asynchronous sending?
Q. How would you monitor and tune Producer performance?
Q. What are the main configuration properties for a Kafka Producer?
Key configurations include:
bootstrap.servers: List of broker addresses for initial connection.
key.serializer & value.serializer: Classes to serialize key and value.
acks: Controls message durability (0, 1, or all)
retries: Number of retries on failure.
batch.size: Size of batch before sending.
linger.ms: Time to wait before sending a batch.
compression.type: Compression algorithm (none, gzip, snappy, lz4, zstd)