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bpo-36785: PEP 574 What's New entry (#13931)

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Antoine Pitrou 2019-06-09 14:47:15 +02:00 committed by Łukasz Langa
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Doc/whatsnew/3.8.rst
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@ -54,7 +54,6 @@ For full details, see the :ref:`changelog <changelog>`.
Some notable items not yet covered here: Some notable items not yet covered here:
* :pep:`574` - Pickle protocol 5 with out-of-band data buffer support
* :pep:`578` - Runtime audit hooks for potentially sensitive operations * :pep:`578` - Runtime audit hooks for potentially sensitive operations
* ``python -m asyncio`` runs a natively async REPL * ``python -m asyncio`` runs a natively async REPL
* ... * ...
@ -261,6 +260,23 @@ See :pep:`590` for a full description.
(Contributed by Jeroen Demeyer and Mark Shannon in :issue:`36974`.) (Contributed by Jeroen Demeyer and Mark Shannon in :issue:`36974`.)
Pickle protocol 5 with out-of-band data buffers
-----------------------------------------------
When :mod:`pickle` is used to transfer large data between Python processes
in order to take advantage of multi-core or multi-machine processing,
it is important to optimize the transfer by reducing memory copies, and
possibly by applying custom techniques such as data-dependent compression.
The :mod:`pickle` protocol 5 introduces support for out-of-band buffers
where :pep:`3118`-compatible data can be transmitted separately from the
main pickle stream, at the discretion of the communication layer.
See :pep:`574` for a full description.
(Contributed by Antoine Pitrou in :issue:`36785`.)
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