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==========
Changelog
==========
.. changelog::
:version: 0.4.1
.. change::
:pullreq: 2
An "async creator" function can be specified to
:class:`.Lock` which allows the "creation" function
to be called asynchronously or be subsituted for
another asynchronous creation scheme. Courtesy
Ralph Bean.
.. changelog::
:version: 0.4.0
:released: Tue Oct 30 2012
.. change::
reworked Dogpile's API into a new object called Lock.
Lock presents just one set of arguments for locking within
one constructor call, and provides the "comprehensive" caching
pattern that is what's desired in the vast majority of cases.
The Dogpile class is now legacy, and
builds its various usage patterns on top of Lock.
.. change::
:tags:
:tickets: 1
Fixed the dependency on storing "creationtime" locally in memory;
this caused dogpile pileups for a missing cache value when used in multiple-process
environments. The new Lock object now checks the value_and_created_fn()
an extra time within the "lock acquired" phase so that multiple writers
who entered the block don't rely upon a memory-only version of creation
time.
.. changelog::
:version: 0.3.3
:released: Tue Sep 25 2012
.. change::
:tags:
:tickets:
repair setup.py so that tests don't install,
courtesy Ben Hayden.
.. changelog::
:version: 0.3.2
:released: Wed Jun 13 2012
.. change::
:tags:
:tickets:
upgrade to beta.
.. changelog::
:version: 0.3.1
:released: Sun Apr 15 2012
.. change::
:tags:
:tickets:
py3k compatibility is in-place now, no
2to3 needed.
.. changelog::
:version: 0.3.0
:released: Sat Apr 14 2012
.. change::
:tags:
:tickets:
Renamed the project again - to dogpile.core.
Package has been reorganized so that "dogpile"
is a pure namespace package. The base dogpile
features are now in "dogpile.core".
.. changelog::
:version: 0.2.2
:released: Fri Mar 30 2012
.. change::
:tags:
:tickets:
expire time of None means "never expire".
.. changelog::
:version: 0.2.1
:released: Fri Dec 23 2011
.. change::
:tags:
:tickets:
Add new "nameregistry" helper. Another fixture
derived from Beaker, this allows the ad-hoc creation of
a new Dogpile lock based on a name, where all other
threads calling that name at the same time will get
the same Dogpile lock. Allows any number of
logical "dogpile" actions to carry on concurrently
without any memory taken up outside of those operations.
.. change::
:tags:
:tickets:
To support the use case supported by nameregistry, added
value_and_created_fn to dogpile.acquire(). The idea
is that the value_and_created_fn can return
(value, createdtime), so that the creation time of the
value can come from the cache, thus eliminating the
need for the dogpile lock to hang around persistently.
.. changelog::
:version: 0.2.0
:released: Sun Oct 23 2011
.. change::
:tags:
:tickets:
change name to lowercase "dogpile".
.. changelog::
:version: 0.1.0
.. change::
initial revision.
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