You are here: Home / LBN / Up2date / Plone and Zope / BastionLinux 25 / zope-zc.queue-2.0.0-1.lbn25.py37.noarch

zope-zc.queue-2.0.0-1.lbn25.py37.noarch

Package Attributes
RPM  zope-zc.queue-2.0.0-1.lbn25.py37.noarch.rpm Architecture  noarch Size  107359 Created  2018/10/18 05:39:26 UTC
Package Specification
Summary Persistent ZODB queues
Group Application/Internet
License ZPL
Home Page http://pypi.python.org/pypi/zc.queue/2.0.0
Description

Persistent queues are simply queues that are optimized for persistency via the ZODB. They assume that the ZODB is using MVCC to avoid read conflicts. They attempt to resolve write conflicts so that transactions that add and remove objects simultaneously are merged, unless the transactions are trying to remove the same value from the queue.

An important characteristic of these queues is that they do not expect to hold more than one reference to any given equivalent item at a time. For instance, some of the conflict resolution features will not perform desirably if it is reasonable for your application to hold two copies of the string "hello" within the same queue at once [1].

The module provides two flavors: a simple persistent queue that keeps all contained objects in one persistent object (Queue), and a persistent queue that divides up its contents into multiple composite elements (CompositeQueue). They should be equivalent in terms of API and so are mostly examined in the abstract in this document: we'll generate instances with a representative Queue factory, that could be either class. They only differ in an aspect of their write conflict resolution behavior.

Requires
rpmlib(PayloadFilesHavePrefix)  
rpmlib(PartialHardlinkSets)  
rpmlib(CompressedFileNames)  
zope-zc  
rpmlib(PayloadIsXz)  
rpmlib(FileDigests)  
Provides
python2.7dist(zc.queue)
python2dist(zc.queue)
zope-zc.queue
Obsoletes
zope-zc.queue-egginfo

Document Actions

Distributions
To see exactly what is included in BastionLinux™, visit our online RPMDistro Builder.
Buy Now
Bastion CD
Subscribe Now
and get BastionLinux™ ...
Sponsored Links