I'm planning to develop a standalone restful Image Server with the following functionality, but first would like to know if something similar already exists in the open source world (language not important):
- restful (crud) on master image, e.g:
/GET/asd983249as - possibly bulk-gets / LIST
- support for metadata (Creative commons info, dimensions, etc.) that directly relates to the image (references from the domain to these images is NOT included)
- restful lazy-get of different 'renditions' of an image. i.e if a rendition doesn't exist, it is created upon request. Obviously the original image needs to exist. Different operations are allowed (resize and crop to begin with)
- e.g:
/GET/asd983249as/100x100(simple resize) - allowed dimensions are configurable, so not to get DoS'ed (not as quickly anyway)
Non functional:
- Reasonable performant / Scalable / HA (yeah I know this doesn't say anything really)
- Possibly in-mem caching
Thinking about going the Mongo GridFS route, getting MongoDb sharding and replication almost for free. Putting Nginx in front, perhaps (in part) directly using nginx-gridfs (see below) should allow for the rest-stuff and, with some config, some simple caching if gridfs can't handle that for itself (don't know)
Sources:
nginx-gridfs http://www.coffeepowered.net/2010/02/17/serving-files-out-of-gridfs/
Idea of lazy-gets (and a simple implementation of what I'm looking for, although it seemed more hobbyish than an actively maintained project) http://sumitbirla.com/2011/11/how-to-build-a-scalable-caching-resizing-image-server/
other stuff that comes close, but isn't an end solution https://github.com/adamdbradley/foresight.js/wiki/Server-Resizing-Images
Anything that already does this?
