Weed-FS is more of a key-file mapping, without full POSIX support, and Weed-FS has less components. One file is identifiable via a 33 character string as ID. A

Weed-FS is more of a key-file mapping, without full POSIX support, and Weed-FS has less components. One file is identifiable via a 33 character string as ID. All the file meta information is in memory, only one disk read is needed to get the file content, without too many disk operation to read file meta data. You can call Weed-FS as NoFS, similar to NoSQL in the database world.