https://github.com/biningo/bitcask-go

This is bitcask model db demo.
https://github.com/biningo/bitcask-go

Last synced: 2 months ago
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This is bitcask model db demo.

• Host: GitHub
• URL: https://github.com/biningo/bitcask-go
• Owner: biningo
• Created: 2021-11-17T09:56:39.000Z (over 3 years ago)
• Default Branch: master
• Last Pushed: 2021-11-24T07:45:50.000Z (over 3 years ago)
• Last Synced: 2025-01-26T13:43:46.304Z (4 months ago)
• Language: Go
• Size: 5.86 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
## Bitcask demo

redis是纯内存模型的，把kv数据都保存在内存中，但是一旦数据量很大的话就会占用大量内存 ，所以为了节省内存我们可以把value保存在磁盘里，在内存中只保存key和数据在磁盘对应的offset，读取的话则需要读两次: 先从内存读key对应的offset,再工具offset读一次磁盘即可获取数据。由于增删查改都是顺序IO，只需要不定期的进行merge文件，所以读写磁盘的速度还是挺快的。

   

references: https://github.com/roseduan/minidb