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Kafka · Advanced Kafka

What is Kafka Connect?

Easykafka-27
kafka connectconnectorsintegrationcdc

Question

What is Kafka Connect, and what problem does it solve?

Solution

Kafka Connect is a framework for moving data in and out of Kafka using reusable connectors, instead of writing custom producer/consumer apps for every integration.

Problem it solves

Without Connect, every source (MySQL, Postgres, S3, Salesforce) needs a hand-rolled ingestion service. Connect standardizes:

  • Configuration
  • Scaling (tasks / workers)
  • Offsets / positions for connectors
  • Rest API for managing connectors
  • Converters (JSON, Avro, Protobuf) and Single Message Transforms (SMTs)
Postgres --(source connector)--> Kafka topics --(sink connector)--> Snowflake / S3 / ES

Architecture sketch

  • Workers run connectors
  • A connector splits work into tasks
  • Standalone mode for demos; distributed mode for production (config stored in Kafka)

Why DE interviews love it

Most real platforms use Connect (or a managed equivalent) for CDC and landing zones. Saying "I'd use a Debezium source connector into Kafka, then a sink to the warehouse" is a strong architecture answer.

Interview tip: "Connect = integration runtime for Kafka. Prefer connectors over custom glue when a maintained connector exists."

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