Apache Kafka is a durable, high-performance messaging system that can be applied to various use cases including messaging, data integration, log aggregation, and metrics. It provides an event backbone for storing real-time events for aggregating, enriching, and processing. InfluxDB is a time series database (TSDB) optimized for monitoring, application metrics, IoT sensor data, and real-time analytics. It can be integrated with Apache Kafka using Telegraf to send or receive metrics or event data for both processing and monitoring. This integration allows for the streaming of real-time sensor data from Apache Kafka to InfluxDB.