56 lines
2.8 KiB
Markdown
56 lines
2.8 KiB
Markdown
Copyright (C) 2008 Happy Fish / YuQing
|
|
|
|
FastDFS may be copied only under the terms of the GNU General
|
|
Public License V3, which may be found in the FastDFS source kit.
|
|
Please visit the FastDFS Home Page for more detail.
|
|
Chinese language: http://www.fastken.com/
|
|
|
|
|
|
FastDFS is an open source high performance distributed file system. It's major
|
|
functions include: file storing, file syncing and file accessing (file uploading
|
|
and file downloading), and it can resolve the high capacity and load balancing
|
|
problem. FastDFS should meet the requirement of the website whose service based
|
|
on files such as photo sharing site and video sharing site.
|
|
|
|
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".
|
|
|
|
The tracker and storage contain one or more servers. The servers in the tracker
|
|
or storage cluster can be added to or removed from the cluster by any time without
|
|
affecting the online services. The servers in the tracker cluster are peer to peer.
|
|
|
|
The storarge servers organizing by the file volume/group to obtain high capacity.
|
|
The storage system contains one or more volumes whose files are independent among
|
|
these volumes. The capacity of the whole storage system equals to the sum of all
|
|
volumes' capacity. A file volume contains one or more storage servers whose files
|
|
are same among these servers. The servers in a file volume backup each other,
|
|
and all these servers are load balancing. When adding a storage server to a
|
|
volume, files already existing in this volume are replicated to this new server
|
|
automatically, and when this replication done, system will switch this server
|
|
online to providing storage services.
|
|
|
|
When the whole storage capacity is insufficiency, you can add one or more
|
|
volumes to expand the storage capacity. To do this, you need to add one or
|
|
more storage servers.
|
|
|
|
The identification of a file is composed of two parts: the volume name and
|
|
the file name.
|
|
|
|
Client test code use client library please refer to the directory: client/test.
|
|
|
|
For more FastDFS related articles, please subscribe the Wechat/Weixin public account
|
|
(Chinese Language): fastdfs
|
|
|
|
FastDFS is a lightweight object storage solution. If you need a general distributed
|
|
file system for databases, K8s and virtual machines (such as KVM), you can learn about
|
|
[FastCFS](https://github.com/happyfish100/FastCFS) which achieves strong data consistency
|
|
and high performance.
|
|
|
|
We provide technical support service and customized development. Welcome to use WeChat or email for discuss.
|
|
|
|
email: 384681(at)qq(dot)com
|