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open-source, high-performance,
schema-free, document-oriented
           database



                       http://www.mon...
The Web framework for perfectionists
           with deadlines




                        http://www.djangoproject.com/
“One size fits all”
   no longer
                               RDBMS
                          (Oracle, MySQL)




       ...
NoSQL really means:

non-relational next generation
operational datastores and databases
Scaling out
no joins +
light transactional semantics =
  horizontally scalable architectures
Data models
no joins +
light transactional semantics =
  horizontally scalable architectures

important side effect :
 new...
Data models
Key/value
 memcached, dynamo, voldemort


Tabular
 bigtable, cassandra, hbase, hypertable


Document-oriented
...
MongoDB in two minutes
• Documents (think rows) are dicts:
            {“hello”: “world”}
  {“hello”: “world”, “foo”: [{“b...
?
Yes...
 ...but also sometimes no
Similar to                            +
• A lot of Django doesn’t depend on django.db:
 • URL dispatch, templates, I18N, c...
settings.py
DATABASE_ENGINE = ''
DATABASE_NAME = ''
DATABASE_USER = ''
DATABASE_PASSWORD = ''
DATABASE_HOST = ''
DATABASE_...
Representing a Poll

{'question': 'Do MongoDB + Django <3 each other?',
 'pub_date': datetime.datetime(2010, 1, 21),
 'cho...
models.py (PyMongo)
def save_poll(question):
  return db.polls.insert({"question": question,
                  "pub_date":...
models.py (MongoKit)

class Poll(mongokit.Document):
   structure = {"question": str,
            "pub_date": datetime,
  ...
models.py (Ming)
class Poll(ming.Document):

  class __mongometa__:
     session = session
     name = "polls"

  _id = mi...
mango - sessions and auth


•   Full sessions support
•   mango provided User class
    •   supports is_authenticated(), s...
mango - sessions and auth


SESSION_ENGINE = 'mango.session'
AUTHENTICATION_BACKENDS = ('mango.auth.Backend',)
MONGODB_HOS...
What about admin?

• No great solution... yet.
• Could replace admin app like mango does
  for sessions / auth
• Or...
Supporting MongoDB
        in django.db
•   Best solution (long term)

•   http://bitbucket.org/kpot/django-mongodb/

•   ...
1. Download MongoDB
   http://www.mongodb.org

2. Try it out!

3. (And help us make things work better with
   Django!)
• http://www.mongodb.org
• irc.freenode.net#mongodb
• mongodb-user on google groups
• @mongodb, @mdirolf
• mike@10gen.com
...
MongoDB hearts Django? (Django NYC)
MongoDB hearts Django? (Django NYC)
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MongoDB hearts Django? (Django NYC)

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A look at how to work with MongoDB and Django, and how we can make the interaction even better in the future.

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  • Transcript of "MongoDB hearts Django? (Django NYC)"

    1. 1. open-source, high-performance, schema-free, document-oriented database http://www.mongodb.org/
    2. 2. The Web framework for perfectionists with deadlines http://www.djangoproject.com/
    3. 3. “One size fits all” no longer RDBMS (Oracle, MySQL) Non-relational New gen. OLAP (vertica, aster, greenplum) operational stores (“NoSQL”)
    4. 4. NoSQL really means: non-relational next generation operational datastores and databases
    5. 5. Scaling out no joins + light transactional semantics = horizontally scalable architectures
    6. 6. Data models no joins + light transactional semantics = horizontally scalable architectures important side effect : new data models = improved ways to develop applications
    7. 7. Data models Key/value memcached, dynamo, voldemort Tabular bigtable, cassandra, hbase, hypertable Document-oriented couchdb,
    8. 8. MongoDB in two minutes • Documents (think rows) are dicts: {“hello”: “world”} {“hello”: “world”, “foo”: [{“bar”: 1}]} • Collections (think tables) are schema-free • Queries are dynamic • Great single node performance • Built in replication and auto-sharding • No complex transactions
    9. 9. ?
    10. 10. Yes... ...but also sometimes no
    11. 11. Similar to + • A lot of Django doesn’t depend on django.db: • URL dispatch, templates, I18N, caching, etc. • Some things do: • Models • Auth • Sessions • Admin
    12. 12. settings.py DATABASE_ENGINE = '' DATABASE_NAME = '' DATABASE_USER = '' DATABASE_PASSWORD = '' DATABASE_HOST = '' DATABASE_PORT = '' MIDDLEWARE_CLASSES = ( 'django.middleware.common.CommonMiddleware', # 'django.contrib.sessions.middleware.SessionMiddleware', # 'django.contrib.auth.middleware.AuthenticationMiddleware', ) INSTALLED_APPS = ( # 'django.contrib.auth', 'django.contrib.contenttypes', # 'django.contrib.sessions', 'django.contrib.sites', )
    13. 13. Representing a Poll {'question': 'Do MongoDB + Django <3 each other?', 'pub_date': datetime.datetime(2010, 1, 21), 'choices': [{'votes': 35, 'choice': 'Yes!'}, {'votes': 2, 'choice': 'No...'}]}
    14. 14. models.py (PyMongo) def save_poll(question): return db.polls.insert({"question": question, "pub_date": datetime.utcnow()}) def all_polls(): return db.polls.find() def add_choice(poll_id, choice): db.polls.update({"_id": poll_id}, {"$push": {"choices": {"choice": choice, "votes": 0}}}) def add_vote(poll_id, choice): db.polls.update({"_id": poll_id}, {"$inc": {"choices.%d.votes" % choice: 1}}) http://api.mongodb.org/python
    15. 15. models.py (MongoKit) class Poll(mongokit.Document): structure = {"question": str, "pub_date": datetime, "choices": [{"choice": str, "votes": int}]} required_fields = ["question"] default_values = {"pub_date": datetime.utcnow()} http://bytebucket.org/namlook/mongokit
    16. 16. models.py (Ming) class Poll(ming.Document): class __mongometa__: session = session name = "polls" _id = ming.Field(ming.schema.ObjectId) question = ming.Field(str, required=True) pub_date = ming.Field(datetime.datetime, if_missing=datetime.datetime.utcnow) choices = ming.Field([{"choice": str, "votes": int}]) http://merciless.sourceforge.net/
    17. 17. mango - sessions and auth • Full sessions support • mango provided User class • supports is_authenticated(), set_password(), etc. http://github.com/vpulim/mango
    18. 18. mango - sessions and auth SESSION_ENGINE = 'mango.session' AUTHENTICATION_BACKENDS = ('mango.auth.Backend',) MONGODB_HOST = 'localhost' MONGODB_PORT = None MONGODB_NAME = 'mydb' http://github.com/vpulim/mango
    19. 19. What about admin? • No great solution... yet. • Could replace admin app like mango does for sessions / auth • Or...
    20. 20. Supporting MongoDB in django.db • Best solution (long term) • http://bitbucket.org/kpot/django-mongodb/ • http://bitbucket.org/wkornewald/django-nonrel/ • http://code.djangoproject.com/wiki/NonSqlBackends
    21. 21. 1. Download MongoDB http://www.mongodb.org 2. Try it out! 3. (And help us make things work better with Django!)
    22. 22. • http://www.mongodb.org • irc.freenode.net#mongodb • mongodb-user on google groups • @mongodb, @mdirolf • mike@10gen.com • http://www.slideshare.net/mdirolf • http://github.com/mdirolf/djanMon/
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