expKV

expKV is an experimental high-performance key-value store designed for research, benchmarking, and education. It provides a minimal interface for basic key-value operations and is intended to be simple enough for experimentation while offering mechanisms to explore latency, throughput, and persistence trade-offs.

Architecture and design commonly features a multi-threaded in-memory index distributed across shards to enable parallel processing. Durable storage is typically provided by a log on disk, such as an append-only or write-ahead log, to ensure crash recovery and data durability. Many configurations support replication, pluggable storage backends, and tunable durability and consistency settings. The architecture emphasizes modular components to facilitate experiments with caching, indexing strategies, and persistence mechanisms.

API and data model expKV exposes primitives such as put, get, delete, and batch writes. Keys are treated as strings, and values as opaque byte sequences. Client libraries or bindings may exist for multiple programming languages, offering a language-agnostic interface to interact with the store. The project often supports optional transactional-like batch operations for atomicity across multiple keys within a single request or transaction context.

Use and status expKV is typically hosted as an open-source project in public repositories where researchers and developers contribute and discuss features. It is primarily used for benchmarking, prototyping new storage and indexing ideas, and educational purposes rather than as a general-purpose production database. Development activity and feature sets can vary over time and across implementations.

See also: Key-value store; in-memory database; log-structured storage; distributed systems.