Codernitydb Introduction and usage examples of NoSQL database developed by Pure Python

Look at this logo, some python-like snakes. The database Codernitydb introduced this time is purely python-developed.

The previous use of the next tinydb this local database, also in an API service used, at first felt that the speed of some not to force, the result of a look at the implementation of the way, is really too bird, incredibly is the storage of JSON, even a binary compression is not. The Codernitydb introduced here is also a small database of pure development.

Codernitydb is an open source, pure Python language (no third party dependent), fast, multi-platform NoSQL database. It has options to support the HTTP service version (Codernitydb-http), and the Python client library (codernitydb-pyclient), which targets the 100% compatible embedded version.

Key Features

1.Pyhon Native Support
2. Multiple indexes
3. Fast (up to 50 000 insert operations per second)
4. Embedded mode (default) and server mode (codernitydb-http), plus client library (codernitydb-pyclient), capable of 100% compatible
5. Easy to complete customer storage

Codernitydb Database Operation code Example:

The code is as follows:

Insert (Simple)

From codernitydb.database Import Database

db = Database ('/tmp/tut1 ')
Db.create ()

Insertdict = {' X ': 1}
Print Db.insert (insertdict)


　

Insert

From codernitydb.database Import Database
From Codernitydb.hash_index import Hashindex

Class Withxindex (Hashindex):
def __init__ (self, *args, **kwargs):
kwargs[' key_format ' = ' I '
Super (Withxindex, self). __init__ (*args, **kwargs)

def make_key_value (self, data):
A_val = Data.get ("x")
If A_val is not None:
Return A_val, None
Return None

def make_key (self, key):
Return key

db = Database ('/tmp/tut2 ')
Db.create ()

X_ind = Withxindex (Db.path, ' x ')
Db.add_index (X_ind)

Print Db.insert ({' X ': 1})
　
　

Count

From codernitydb.database Import Database

db = Database ('/tmp/tut1 ')
Db.open ()

Print Db.count (Db.all, ' x ')
　

Get

From codernitydb.database Import Database

db = Database ('/tmp/tut2 ')
Db.open ()

Print db.get (' x ', 1, with_doc=true)
　

Delete

From codernitydb.database Import Database

db = Database ('/tmp/tut2 ')
Db.open ()

Curr = Db.get (' x ', 1, with_doc=true)
doc = curr[' Doc ')

Db.delete (DOC)
　
　

Update

From codernitydb.database Import Database

db = Database ('/tmp/tut2 ')
Db.create ()

Curr = Db.get (' x ', 1, with_doc=true)
doc = curr[' Doc ')

doc[' Updated ') = True
Db.update (DOC)

