State Backends, Apache Flink Community, 2024 (Apache Software Foundation) - Official documentation detailing Flink's state backend options, their configuration, and operational considerations for both HashMap and RocksDB backends.
RocksDB GitHub Wiki, The RocksDB Project Contributors, 2023 - Official technical documentation of RocksDB, explaining its architecture, LSM-tree storage engine, and how it handles writes, reads, and persistence.
Apache Flink: Stream Processing for Real-Time Applications, Fabian Hueske and Vasia Kalavri, 2019 (Manning Publications) - A comprehensive book that explains Flink's state management, checkpointing, and recovery, providing valuable context for state backend choices.