Awesome GitHub RepositoriesMissing Value Queries

RediSearch is a Redis module that adds secondary indexing, full-text search, aggregation, and vector similarity search directly into the in-memory data store. It operates as an in-process search engine, extending the core key-value store with capabilities for indexing hash and JSON documents, enabling fast field-level lookups beyond primary key access. The module provides a full-text search engine built on inverted indexes, supporting stemming, fuzzy matching, and relevance scoring via tf-idf. It also includes a vector similarity search engine using a Hierarchical Navigable Small World graph

Datascript 是一个不可变的、内存中的状态存储和基于模式的三元组存储。它将应用状态作为版本化数据库进行管理，将数据存储为由实体、属性、值和事务组成的不可变事实。 该项目提供了一个用于执行 Datalog 查询的逻辑引擎，支持隐式连接、递归规则和否定。它还具有一个用于检索深度嵌套实体图和相关数据结构的声明式 pull API。 该数据库通过模式驱动的约束和属性类型强制执行数据完整性。它支持原子事务、用于持久化的可插拔存储协议，以及用于优化查找的 B 树属性索引。 该系统专为 Clojure、ClojureScript 和 JavaScript 环境设计。

RavenDB is a multi-model NoSQL document database designed for high-performance, ACID-compliant data storage. It persists structured information as schema-flexible JSON documents and utilizes a unit-of-work session pattern to track entity changes and batch modifications into atomic transactions. The platform is built on a distributed architecture that supports horizontal scaling through sharding and ensures high availability via multi-node, master-to-master cluster replication. The database distinguishes itself through a self-optimizing query engine that automatically creates and maintains ind