Level/levelupArchived
Levelup
Levelup 是一个排序键值存储系统，使用字节数组作为键和值来保存和检索数据。它为 Node.js 和浏览器提供了一个兼容层，为符合特定抽象标准的存储后端提供统一接口。
该项目具有原子批处理写入引擎，可将多个写入和删除操作作为单个单元执行，以确保数据一致性。它包括一个用于将键和值作为连续序列读取的基于范围的数据流处理器，以及一个用于跟踪异步更新和状态变化的事件驱动存储监视器。
该系统涵盖了更广泛的数据库原语，包括基于范围的数据删除和后端引擎抽象，以在不同的运行时环境中维护一致的命令集。
Features
- Key-Value - Provides a high-performance key-value storage system that uses raw byte arrays for platform-independent data retrieval.
- Database Atomic Batches - Implements a mechanism to group multiple write and delete operations into a single atomic operation for data consistency.
- LSM-Tree Batch Writes - Groups multiple mutations into a single atomic commit to ensure data consistency and reduce write amplification.
- Cursor-Based Iteration - Implements a cursor mechanism for traversing sorted data sequences with support for bidirectional movement and pagination.
- Lexicographical Range Reads - Allows the retrieval of all keys and values within a specific byte-sorted range using streaming and limits.
- Atomic Transactions - Executes multiple data manipulation operations as a single atomic unit to ensure consistency.
- Backend Compatibility Layers - Provides a compatibility layer for Node.js and browsers to interface with abstract-leveldown compliant backends.
- Sorted - Enables the reading of keys and values as continuous sequences via range bounds and result limits.
- Sorted Key-Value Maps - Provides a key-value store that maintains entries sorted by key to enable efficient range queries.
- Storage Abstraction - Offers a middleware layer that provides a unified interface for interacting with different underlying storage backends.
- Storage Backend Adapters - Provides an interface to interact with diverse storage engines using a consistent set of commands.
- Storage Backend Adapters - Provides a unified interface that translates consistent commands into specific API calls for different storage backends.
- Range Deletions - Allows the removal of specific data segments by defining upper and lower key boundaries.
- Storage Event Notifications - Ships an event-driven monitor to track asynchronous updates and state changes within the data store.
- Store Event Listeners - Implements a notification system using event listeners to react to asynchronous updates and state changes in the store.
- Database Drivers - LevelDB interface.
- 数据库 - LevelDB client.
