nginx-lua-fastdfs-GraphicsMagick

fastdfs开源的分布式文件系统，此脚本利用nginx lua模块，动态生成图片缩略图，fastdfs只存一份原图。lua通过socket获取fastdfs的原图，并存放到本地，根据不同规则url，例如：_60x60.jpg、_80x80.jpg，类似淘宝图片url规则。利用gm命令生成本地缩略图，第二次访问直接返回本地图片。定时任务凌晨清除7天内未访问的图片，节省空间。

图片访问举例

参考网址

nginx-lua-fastdfs-graphicsmagick's Issues

定时任务的脚本

原脚本为查找7天内被访问的
0 2 * * * find /data/images -atime -7 | xargs rm -rf
应该为，前面是+
才是查找7天内没有被访问过的
0 2 * * * find /data/images -atime +7 | xargs rm -rf

2016/01/26 10:32:04 [notice] 500577#0: 101 "/([a-zA-Z0-9]+)/([a-zA-Z0-9]+)/([a-zA-Z0-9]+)/([a-zA-Z0-9]+)/(.)" matches "/group1/M00/00/00/CgQbTlal2hmAU9viAAUBXOkTyek689.jpg", client: 10.4.4.4:444, server: localhost, request: "GET /group1/M00/00/00/CgQbTlal2hmAU9viAAUBXOkTyek689.jpg HTTP/1.1", host: "10.4.4.4:444"
2016/01/26 10:32:04 [error] 500577#0: *101 lua entry thread aborted: runtime error: /usr/local/nginx-1.8.0/conf/lua/restyfastdfs.lua:61: attempt to index upvalue 'bit' (a nil value)
stack traceback:
coroutine 0:
/usr/local/nginx-1.8.0/conf/lua/restyfastdfs.lua:61: in function 'int2buf'
/usr/local/nginx-1.8.0/conf/lua/restyfastdfs.lua:471: in function 'query_download_storage_ex'
/usr/local/nginx-1.8.0/conf/lua/restyfastdfs.lua:462: in function 'query_download_storage'
/usr/local/nginx-1.8.0/conf/lua/restyfastdfs.lua:513: in function 'do_download'
/usr/local/nginx-1.8.0/conf/lua/fastdfs.lua:50: in function </usr/local/nginx-1.8.0/conf/lua/fastdfs.lua:1>, client: 10.4.4.4, server: localhost, request: "GET /group1/M00/00/00/CgQbTlal2hmAU9viAAUBXOkTyek689.jpg HTTP/1.1", host: "10.4.4.4:444"

restyfastdfs.lua

coroutine 0:
/usr/local/nginx/conf/lua/restyfastdfs.lua: in function 'query_download_storage'
/usr/local/nginx/conf/lua/restyfastdfs.lua:513: in function 'do_download'
/usr/local/nginx/conf/lua/fastdfs.lua:50: in function </usr/local/nginx/conf/lua/fastdfs.lua:1>, client: 192.168.200.1, server: www.fastdfs.dev, request: "GET /group1/M00/00/00/22.jpg HTTP/1.1", host: "www.fastdfs.dev"
2017/12/03 00:10:38 [error] 34696#0: *16 lua entry thread aborted: runtime error: /usr/local/nginx/conf/lua/restyfastdfs.lua:463: attempt to index local 'res' (a nil value)

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