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LevelDB is a fast key-value storage library written at Google that provides an ordered mapping from string keys to string values.

Redisson: Valkey & Redis Java Client and Real-Time Data Platform. Sync/Async/RxJava/Reactive API. Extends Valkey and Redis with over 60 objects and services: Set, Multimap, SortedSet, Map, List, Queue, Deque, Semaphore, Lock, AtomicLong, Map Reduce, Bloom filter, Spring, Tomcat, Scheduler, JCache API, Hibernate, RPC, local cache..

EF Core is a modern object-database mapper for .NET. It supports LINQ queries, change tracking, updates, and schema migrations.

  • entity-framework
  • database
  • c-sharp
  • dotnet-core

greenDAO is a light & fast ORM solution for Android that maps objects to SQLite databases.

TypeScript ORM for Node.js based on Data Mapper, Unit of Work and Identity Map patterns. Supports MongoDB, MySQL, MariaDB, MS SQL Server, PostgreSQL and SQLite/libSQL databases.

Coroot is an open-source observability and APM tool with AI-powered Root Cause Analysis. It combines metrics, logs, traces, continuous profiling, and SLO-based alerting with predefined dashboards and inspections.

.Net aot ORM SqlServer ORM Mongodb ORM MySql 瀚高 Postgresql ORM DB2 Hana 高斯 Duckdb C# VB.NET Sqlite ORM Oracle ORM Mysql Orm 虚谷数据库 达梦 ORM 人大金仓 ORM 神通ORM C# ORM , C# ORM .NET ORM NET9 ORM .NET8 ORM ClickHouse ORM QuestDb ,TDengine ORM,OceanBase ORM,GaussDB ORM,Tidb ORM Object/Relational Mapping

MapDB provides concurrent Maps, Sets and Queues backed by disk storage or off-heap-memory. It is a fast and easy to use embedded Java database engine.

Type safe SQL builder with code generation and automatic query result data mapping

Roaring bitmaps in Go (golang), used by InfluxDB, Bleve, DataDog

  • go
  • roaring-bitmaps
  • bitmap-compression
  • bitset