基于Java磁盘的键值存储 [英] Java disk-based key-value storage

问题描述

是否存在基于文件系统的键值存储的高效Java实现，具有以下功能：

Is there an efficient Java implementation of a filesystem-based key-value storage with the following features:

1. 存储，覆盖和通过唯一ID检索字节数组（可由存储分配）


2. 无内存缓存（读取意味着从文件系统读取，写入意味着立即写入文件系统）


3. 总数据大小高达数TB


4. 高达数亿的存储对象数


5. 可管理的文件系统对象数（在文件系统级别移动/复制/删除整个存储空间）

1. Store, overwrite, and retrieve byte arrays by a unique ID (may be assigned by the storage)
2. No memory caching (read means read from file system, write means write to file system immediately)
3. Total data size up to few terabytes
4. Number of stored objects up to hundreds of millions
5. Manageable number of file system objects (to move/copy/delete entire storage on file system level)

Berkeley DB JE会吗？

Will Berkeley DB JE do?

推荐答案

只需使用您选择的文件系统格式化专用分区？文件系统将满足要求1-4，并且可以通过移动/复制或删除该分区来满足要求5.

Simply format a dedicated partition with a file system of your choice? The file system would meet requirements 1-4, and requirement 5 can be met by moving/copying or deleting that partition.

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