fastdfs

FastDFS is an open source high performance distributed file system. 
It's major functions include: file storing, file syncing and file accessing, 
and design for high capacity and load balance.

檔案儲存
檔案同步
檔案存取
分散式
特別針對 圖片或是影片分享的站台 (但檔案也不能太大,建議 4KB~500MB之間)

FastDFS has two roles: tracker and storage. The tracker takes charge of scheduling and load balancing for file access. The storage store files and it's function is file management including: file storing, file syncing, providing file access interface. It also manage the meta data which are attributes representing as key value pair of the file. For example: width=1024, the key is "width" and the value is "1024".

它分兩個群組,一個是索引的角色,一個是儲放資料的角色

缺點 (我截取 人家 說的),看起來是要命的缺點 !!

缺點是group的容量受單機存儲容量的限制,同時當group內有機器壞掉時,數據恢復只能依賴group內地其他機器,使得恢復時間會很長
最後修改日期: 2015 年 02 月 12 日

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