Git symGit 文件缓存分离组件

Git sym是一款通过git符号链接的进行大文件处理的软件，其目的是从修订控制中分离出庞大的文件缓存。

特性：

• Clones of the source repository are small and fast because no binaries are transferred, yet fully functional with complete metadata and incremental retrieval (git clone --depth has limited granularity and couples metadata to content).

• git-bisect works properly even when versions of the binary files change over time. (We recommend installing a git-sym-post-checkout-hook, in case the resources have not been cached already.)

• selective control of which large files to pull into the local store

• Local fat object stores can be shared between multiple clones, even by different users.

• can easily support fat object stores distributed across multiple hosts, and potentially anywhere in the world

• depends only on stock Python and simple UNIX commands

  
  

安装：

您可以在您的$ PATH中通过调用git-sym运行这个git命令。

ln -sf `pwd`/git-sym ~/bin/git-sym

或者,您也可以直接运行:

python git-sym -h

基本用法：

repo用户

git-sym show
git-sym update

repo所有者

git-sym link --add my_big_file.gif
git commit -m 'git-sym added'
ls -l my_big_file.gif

或者更明确，利用规则检索

ln -sf .git_sym/my_big_data.v123.db my_big_data.db
git add my_big_data.db
git commit
cat <<EOF >> git_sym.makefile
my_big_data.v123.db:
        wget http://www.somewhere.com/my_big_data.v123.db
EOF
git-sym update