これはなんだ?

CouchDB 
imac:gaecouch yssk22$ curl -X GET http://gaecouch.appspot.com/
{"not_found": "Welcome", "version": "0.11.0"}

imac:gaecouch yssk22$ curl -X GET http://gaecouch.appspot.com/a
{"reason": "not_found", "error": "no_db_file"}

imac:gaecouch yssk22$ curl -X PUT --data '' http://gaecouch.appspot.com/a
{"ok": true}

imac:gaecouch yssk22$ curl -X GET http://gaecouch.appspot.com/a
{"update_seq": 0, "purge_seq": 0, "doc_count": 0, "compact_running": false, "db_name": "a", "disk_format_version": 5, "instance_start_time": 1274547941.0, "doc_del_count": 0}

imac:gaecouch yssk22$ curl -X DELETE http://gaecouch.appspot.com/a
{"ok": true}

imac:gaecouch yssk22$ curl -X DELETE http://gaecouch.appspot.com/a
{"reason": "not_found", "error": "missing"}

GAEで遊んでみました。ひとまずここまで。続きをやるかどうかはわかりません！