Newt DB Architecture¶
ZODB is an object-oriented database for Python. It provides transparent object persistence. ZODB has a pluggable storage layer and Newt leverages RelStorage to store data in Postgres.
Newt adds conversion of data from the native serialization used by ZODB to JSON, stored in a Postgres JSONB column. The JSON data supplements the native data to support indexing, search, and access from non-Python application. Because the JSON format is lossy, compared to the native format, the native format is still used for loading objects from the database. For this reason, the JSON data are read-only.
Newt adds a search API for searching the Postgres JSON data and returning persistent objects. It also provides a convenience API for raw data searches.
Finally, Newt adds additional convenience APIs to more directly support it’s intended audience. These are intended to augment but not hide ZODB and RelStorage. Some of these are just aliases. It will be possible to integrate Newt with existing ZODB applications.