10 Kafka Best Practices

Apache Kafka is currently a very popular Pub-Sub system. It is being leveraged as a data streaming platform as well as a message broker. It is often used for real-time event processing, high-throughput, low-latency data streams that are easily scalable. Kafka provides resistance against node failures, durability, scalability, and persistence along with data delivery guarantees. However, just like any other tool, Kafka needs optimization because small configuration mishaps may lead to a big disaster. In this blog, we’ll focus on best practices to avoid mishaps in a Kafka environment.

1)Use the default settings at the Broker level: Kafka is so powerful that it can process and handle a very large amount of data just with the default settings at the Broker level. However, the custom configuration should be applied at the topic level based on your needs.

2)Plan your server restarts: Kafka is a stateful service which means it keeps track of the state of interaction. Randomly restarting your Kafka brokers may lead to data loss.

3)Plan for retention: Ensuring the correct retention space by identifying the producer byte rate is another Kafka best practice. The data rate dictates how much retention space is needed to guarantee retention for a given amount of time.

4)Educate Application Developers: This is the most important but least implemented best practice in the Kafka world. If one can educate developers about the Kafka API then issues like high latency, low throughput, long recovery time, data loss, duplication, etc can be addressed from the get-go.

5)Manage your Partition count: Kafka is designed for parallel processing and, like the act of parallelization itself, fully utilizing it requires a balancing act. Partition count is a topic-level setting, and the more partitions the greater parallelization and throughput. However, partitions also mean more replication latency, rebalances, and open server files. Also, keep in mind that partition can only be increased it can’t be decreased therefore always start from the lowest possible number.

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