Worked on the apache/kafka repository to enhance the clarity and reliability of Kafka’s durability guarantees by updating documentation related to min.insync.replicas and acks settings. Focused on aligning the documentation with actual code behavior, the work clarified that all in-sync replicas must acknowledge writes when acks is set to ‘all’. This update aimed to reduce the risk of misconfiguration in production environments and improve operator understanding of Kafka’s durability semantics. Utilized Java and Kafka configuration expertise, with a strong emphasis on precise technical documentation, to ensure that deployment practices accurately reflect the intended durability guarantees provided by Kafka’s configuration options.