KiviDB

KiviDB is an efficient, Redis®-compatible in-memory database developed in Rust, designed to handle high-throughput workloads while maintaining consistent low-latency performance. Embracing the Redis RESP protocol, KiviDB features a sharded architecture facilitating rapid key-value operations and supports data persistence through snapshots as well as an optional append-only file.

Key Features

• Redis-Compatible Protocol

  KiviDB provides a familiar command interface for Redis users. See COMMANDS.md for a detailed list of supported commands.

• Advanced Search Capabilities

  It includes Redis Stack-style FT.* commands, enabling full-text, tag, numeric, and vector search (both FLAT and HNSW methods).

• Lua Scripting Support

  Lua scripting can be enabled via Cargo features, allowing the use of commands such as EVAL, SCRIPT, and FCALL as outlined in the Scripting commands (Lua).

• Secure Communication

  Optional TLS support ensures secure data transmission, enhancing the integrity and confidentiality of database interactions.

• Performance Metrics

  KiviDB is optimized for performance, achieving impressive throughput and low latency, making it suitable for demanding applications.

Performance Highlights

Benchmarked against leading databases, KiviDB outperforms many of its competitors in both throughput and latency, as illustrated below:

Additionally, KiviDB supports vector search capabilities that allow efficient querying of high-dimensional data, providing competitive queries per second at varying recall levels:

Usage Example

To create an index with a vector field in KiviDB, use the following command:

redis-cli -p 6380 FT.CREATE idx ON HASH PREFIX 1 doc: SCHEMA \
  vec VECTOR HNSW 10 TYPE FLOAT32 DIM 128 DISTANCE_METRIC COSINE M 16 EF_CONSTRUCTION 128

Store vectors as raw FLOAT32 bytes and query using the KNN search approach:

redis-cli -p 6380 FT.SEARCH idx '*=>[KNN 10 @vec $q]' PARAMS 2 q <blob> DIALECT 2

Building and Running KiviDB

KiviDB offers multiple build variants to cater to different operational needs, including core functionalities, Lua scripting, or TLS support. Detailed building instructions and configurations are available in the repository.

Documentation

For more in-depth information, including command usage and configuration, visit the repository on GitHub: KiviDB GitHub Repository and the KiviDB Website.

KiviDB is open-source software offered under a permissive license, enabling use in both open and closed-source projects without the constraints of copyleft.