This is a Rust library that provides safe, idiomatic bindings over the C library librdkafka, enabling Rust applications to produce and consume messages from Apache Kafka. The architecture is a thin wrapper: it exposes a high-level typed API (producers, consumers, admin client, transactions) while delegating all network I/O, partition management, and protocol handling to librdkafka. Key entry points include `ClientConfig` for building clients, the `Consumer` and `Producer` traits, and concrete implementations (`BaseConsumer`, `StreamConsumer`, `BaseProducer`, `FutureProducer`, `ThreadedProducer`). Data flows through a polling loop that dispatches events (delivery reports, rebalance notifications, log messages) to user-provided `ClientContext` callbacks. External dependencies are the librdkafka native library (bundled via submodule or system) and optional async runtimes (Tokio, smol, async-std). The library is heavily used in production Rust Kafka deployments.