83 lines
3.0 KiB
ReStructuredText
83 lines
3.0 KiB
ReStructuredText
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RelStorage is a storage implementation for ZODB that stores pickles in
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a relational database. PostgreSQL 9.0 and above (performance is best
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with 9.5 and above), MySQL 5.0.32+ / 5.1.34+, and Oracle 10g and 11g
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are currently supported. RelStorage replaced the PGStorage project.
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==========
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Features
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==========
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* It is a drop-in replacement for FileStorage and ZEO.
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* There is a simple way to convert FileStorage to RelStorage and back again.
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You can also convert a RelStorage instance to a different relational database.
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* Designed for high volume sites: multiple ZODB instances can share the same
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database. This is similar to ZEO, but RelStorage does not require ZEO.
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* According to some tests, RelStorage handles high concurrency better than
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the standard combination of ZEO and FileStorage.
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* Whereas FileStorage takes longer to start as the database grows due to an
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in-memory index of all objects, RelStorage starts quickly regardless of
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database size.
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* Supports undo, packing, and filesystem-based ZODB blobs.
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* Both history-preserving and history-free storage are available.
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* Capable of failover to replicated SQL databases.
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* ``zodbconvert`` utility to copy databases.
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* Free, open source (ZPL 2.1)
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===============
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Documentation
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===============
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Documentation including `installation instructions`_ is hosted on `readthedocs`_.
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The complete `changelog`_ is also there.
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.. image:: https://readthedocs.org/projects/relstorage/badge/?version=latest
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:target: http://relstorage.readthedocs.io/en/latest/?badge=latest
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.. _`installation instructions`: http://relstorage.readthedocs.io/en/latest/install.html
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.. _`readthedocs`: http://relstorage.readthedocs.io/en/latest/
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.. _`changelog`: http://relstorage.readthedocs.io/en/latest/changelog.html
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=============
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Development
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=============
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RelStorage is hosted at GitHub:
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https://github.com/zodb/relstorage
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Continuous integration
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----------------------
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A test suite is run for every push and pull request submitted. Travis
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CI is used to test on Linux, and AppVeyor runs the builds on
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Windows.
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.. image:: https://travis-ci.org/zodb/relstorage.svg?branch=master
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:target: https://travis-ci.org/zodb/relstorage
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.. image:: https://ci.appveyor.com/api/projects/status/pccddlgujdoqvl83?svg=true
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:target: https://ci.appveyor.com/project/jamadden/relstorage/branch/master
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Builds on Travis CI automatically submit updates to `coveralls.io`_ to
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monitor test coverage.
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.. image:: https://coveralls.io/repos/zodb/relstorage/badge.svg?branch=master&service=github
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:target: https://coveralls.io/github/zodb/relstorage?branch=master
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Likewise, builds on Travis CI will automatically submit updates to
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`landscape.io`_ to monitor code health (adherence to PEP8, absence of
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common code smells, etc).
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.. image:: https://landscape.io/github/zodb/relstorage/master/landscape.svg?style=flat
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:target: https://landscape.io/github/zodb/relstorage/master
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:alt: Code Health
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.. _coveralls.io: https://coveralls.io/github/zodb/relstorage
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.. _landscape.io: https://landscape.io/github/zodb/relstorage
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