ДЕМО

LEVEL 1

Документо-ориентированная

{
   "_id": "5c5014569fa4f109c4c310eb26001157",
   "_rev": "1-6e67347a1a2d73a89b5b8fab2060083a",
   "type": "host",
   "label": "dev server",
   "host": "dev.example.com",
   "username": "root",
   "password": "smalldick",
   "platform": "ubuntu",
   "port": 22,
   "tags": [
       "dev",
       "ubuntu",
       "aws"
   ],
   "groups": [
       "home",
       "dev"
   ]
}

REST API

$ curl http://localhost:5984/hosts/003EB430-4C46-0FA1-8669-A600D0D92C87


{
   "_id": "003EB430-4C46-0FA1-8669-A600D0D92C87",
   "_rev": "1-6e67347a1a2d73a89b5b8fab2060083a",
   "type": "host",
   "label": "dev server",
   "host": "dev.example.com",
   "username": "root",
   "password": "smalldick",
   "platform": "ubuntu",
   "port": 22,
   "tags": [
       "dev",
       "ubuntu",
       "aws"
   ],
   "groups": [
       "home",
       "dev"
   ]
}


$ curl -X DELETE http://localhost:5984/hosts/003EB430-4C46-0FA1-8669-A600D0D92C87

LEVEL 2

Хранение и запись

• MVCC

• append only

• версионирование

• Неубиваемый файл БД

Blob'ы

HARD MODE

Master-Master репликация

Map/Reduce/Views

# Tags

(doc, request) ->
  if doc.type == 'host'
    for tag in doc.tags
	  emit(doc._id, tag)

# Filter: hosts

(doc, request) ->
  return doc.type == 'host'


# Validation function

(newDoc, oldDoc, userCtx) ->
  if doc.type == 'host'
    if not isNumber(doc.host)
  	  throw({forbidden: message});

Overload

Поток

• Репликации

• Подписка на изменения

• Аутентификация

• Конфликты

• CouchApps

• .....

CouchDB 2.0

Выводы

The end