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A backend for ZODB that stores pickles in a relational database. (Python 2 and 3, PyPy, current ZODB versions.)

Project description

RelStorage is a storage implementation for ZODB that stores pickles in a relational database. PostgreSQL 9.0 and above (performance is best with 9.5 and above), MySQL 5.0.32+ / 5.1.34+, and Oracle 10g and 11g are currently supported. RelStorage replaced the PGStorage project.

Features

  • It is a drop-in replacement for FileStorage and ZEO.

  • There is a simple way to convert FileStorage to RelStorage and back again. You can also convert a RelStorage instance to a different relational database.

  • Designed for high volume sites: multiple ZODB instances can share the same database. This is similar to ZEO, but RelStorage does not require ZEO.

  • According to some tests, RelStorage handles high concurrency better than the standard combination of ZEO and FileStorage.

  • Whereas FileStorage takes longer to start as the database grows due to an in-memory index of all objects, RelStorage starts quickly regardless of database size.

  • Supports undo, packing, and filesystem-based ZODB blobs.

  • Both history-preserving and history-free storage are available.

  • Capable of failover to replicated SQL databases.

  • zodbconvert utility to copy databases.

  • Free, open source (ZPL 2.1)

Documentation

Documentation including installation instructions is hosted on readthedocs.

The complete changelog is also there.

https://readthedocs.org/projects/relstorage/badge/?version=latest

Development

RelStorage is hosted at GitHub:

https://github.com/zodb/relstorage

Continuous integration

A test suite is run for every push and pull request submitted. Travis CI is used to test on Linux, and AppVeyor runs the builds on Windows.

https://travis-ci.org/zodb/relstorage.svg?branch=master https://ci.appveyor.com/api/projects/status/pccddlgujdoqvl83?svg=true

Builds on Travis CI automatically submit updates to coveralls.io to monitor test coverage.

https://coveralls.io/repos/zodb/relstorage/badge.svg?branch=master&service=github

Likewise, builds on Travis CI will automatically submit updates to landscape.io to monitor code health (adherence to PEP8, absence of common code smells, etc).

Code Health

Project details


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RelStorage-2.1a1-pp256-pypy_41-macosx_10_12_x86_64.whl (275.4 kB view hashes)

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RelStorage-2.1a1-cp35-cp35m-win_amd64.whl (281.1 kB view hashes)

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RelStorage-2.1a1-cp34-cp34m-win32.whl (278.2 kB view hashes)

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RelStorage-2.1a1-cp34-cp34m-manylinux1_x86_64.whl (293.3 kB view hashes)

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RelStorage-2.1a1-cp34-cp34m-macosx_10_6_intel.whl (284.2 kB view hashes)

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RelStorage-2.1a1-cp33-cp33m-manylinux1_x86_64.whl (293.2 kB view hashes)

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RelStorage-2.1a1-cp27-cp27m-win_amd64.whl (279.0 kB view hashes)

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