It also serves as an example of a "cloud app" in Go. It's a single service for now because it's so small, but it does many things in a cloudy way already.
Feedback is most welcome!
Every meme (image+caption) is served from a URL like /i/<id>.
Good ones are also served from URLs like /m/<word>.
Front page serves popular and new memes, with search based on caption text and base image description.
- User uploads a base image (without captions), and provides a name for it (e.g. "Curious Gopher").
- Base image is assigned an identifier (derived from its contents, to minimize accidental duplicate uploads; on duplicate upload, guide user to adding captions to existing base image).
- Base image is stored in Google Cloud Storage.
- Base images are not served from stable URLs, to avoid being used as a generic image host.
- User can browse base images, with search.
- Page
/create/<baseimg>allows adding a caption to the base image with that identifier. - Submitted meme is assigned an identifier (derived from its contents; on duplicate submission, guide user to viewing the original submission).
- (Later: assign a shorter id too, to keep URLs short.)
- Meme metadata is stored in Google Cloud Datastore.
- Generated image is reproducible. It might be stored in Google Cloud Storage, or we might just cache popular ones in-memory and perhaps demonstrate https://github.com/golang/groupcache. Let's see.
Development mode:
$ go get bygophers.com/go/memes/cmd/memes-webserver
$ cat config.json
{}
$ memes-webserver config.jsonIt listens by default on :8080 for production traffic, and
localhost:8081 for administrative and debug uses.