cqlengine

Apache Cassandra is a highly scalable, eventually consistent, distributed, structured key-value store NoSQL database system, initially developed by Facebook and now maintained by the Apache Software Foundation.

cqlengine is nothing more than an object-relational mapper (ORM) for Cassandra, heavily intertwined with CQL (Cassandra Query Language).

cqlengine will allow developers to create apps and websites that interact with Cassandra using a Python-specific syntax that gets translated to fully-working CQL commands and back.

Features:

• Connect to Cassandra databases
• Manage schemas
• Run DB queries

What is new in this release:

• Support for static columns
• Docs update - examples for the queryset method references
• Improve docs around blind updates
• Write docs about developing cqlengine itself
• Use CASSANDRA_VERSION in tests
• memtable_flush_period_in_ms not in C 1.2 - guard against test failure
• Test fails occasionally despite lists looking the same
• Document Batches default behaviour
• Added Sphinx contrib module to docs

What is new in version 0.16.0:

• Unchanged primary key trigger error on update
• Added support for simple table properties.
• Raise exception when None is passed in as query param
• Trying to perform queries before connection is established should raise useful exception
• Not Possible to Make Non-Equality Filtering Queries
• Filtering on DateTime column
• Blob(bytes) column type issue
• Removed default read_repair_chance & ensure changes are saved when using sync_table
• Specify caching on model
• Specify caching options table management

What is new in version 0.13.0:

• Adding support for post batch callbacks
• Fixing sync table for tables with multiple keys
• Fixing bug in Bytes column
• Fixing bug with timestamps and DST

What is new in version 0.8.4:

• Changing value manager previous value copying to deepcopy.