title: Where is Apache Kafka placed in the PACELC-Theorem
body: <p>I am starting to learn about Apache Kafka. This <a href="https://engineering.linkedin.com/kafka/intra-cluster-replication-apache-kafka" rel="noreferrer">https://engineering.linkedin.com/kafka/intra-cluster-replication-apache-kafka</a> article states that Kafka is a CA system inside the CAP-Theorem. So it focuses on consistency between replicas and also on overall availability.</p>
  
  <p>I recently heard about an extension of the CAP-Theorem called PACELC (<a href="https://en.wikipedia.org/wiki/PACELC_theorem" rel="noreferrer">https://en.wikipedia.org/wiki/PACELC_theorem</a>).
  This theorem could be visualized like this:</p>
  
  <p><a href="https://i.stack.imgur.com/lV2pB.png" rel="noreferrer"><img src="https://i.stack.imgur.com/lV2pB.png" alt="enter image description here"></a></p>
  
  <p>My question is how Apache Kafka could be described in PACELC. I would think that Kafka focuses on consistency when a partition occurs but what otherwise if no partition occurs? Is the focus on low latancy or strong consistency?</p>
  
  <p>Thanks!</p>