DiceDB is a distributed cache manager and hierarchical storage engine based on a Valkey key-value store. It functions as a high-availability key-value cluster that balances performance and cost by distributing data across memory and disk tiers.
The system supports working sets larger than available RAM by persisting evicted keys to disk and restoring them on demand. It also includes a real-time query subscription system that notifies clients when data matching specific criteria is updated.
The project provides distributed cache coordination through master node health monitoring and quorum-based failover. Additional capabilities include gossip-based network discovery, a module extension system for loading shared objects, and tools for managing process logging and network interface binding.