Zope Object Database
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[edit] ZODB
The Zope Object Database (ZODB) transparently persists Python objects in a transactional database. It is included as part of the Zope web application server, but can also be used independently of Zope.
Features of the ZODB include: transactions, history/undo, transparently pluggable storage, built-in caching, and scalability across a network (using ZEO).
[edit] ZEO
ZEO (Zope Enterprise Objects) is a ZODB storage implementation that allows multiple client processes to persist objects to a single ZEO server. This allows transparent scaling, but the ZEO server is still a single point of failure.
A commercial add-on, Zope Replication Services (ZRS), removes the single point of failure, providing hot backup for writes and load-balancing for reads.
[edit] See also
[edit] External links
- Introduction to the Zope Object Database
- ZODB page on wiki.zope.org
- ZODB/ZEO Programming Guide
- How To Love ZODB and Forget RDBMS
- Zope Replication Services (ZRS)
- DirectoryStorage, a high-reliability storage for ZODB
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