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nexedi
ZODB
Commits
5bda7486
Commit
5bda7486
authored
Sep 08, 2016
by
Jim Fulton
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documentation/guide/install-and-run.rst
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documentation/guide/install-and-run.rst
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5bda7486
...
...
@@ -199,13 +199,14 @@ make it possible to search objects in large collections.
.. [#caches-are-expensive] ZODB can be very efficient at caching data
in memory, especially if your `working set
<https://en.wikipedia.org/wiki/Working_set>`_, because the cache is
simply an object tree and accessing a cached object typically
requires no database interaction. Because each connection has it'
s
own
cache
,
connections
can
be
expensive
,
depending
on
their
cache
sizes
.
For
this
reason
,
you
'll generally want to limit the number
of open connections you have at any one time. Connections are
pooled, so opening a connection is inexpensive.
<https://en.wikipedia.org/wiki/Working_set>`_ is small enough to
fit in memory, because the cache is simply an object tree and
accessing a cached object typically requires no database
interaction. Because each connection has its own cache,
connections can be expensive, depending on their cache sizes. For
this reason, you'
ll
generally
want
to
limit
the
number
of
open
connections
you
have
at
any
one
time
.
Connections
are
pooled
,
so
opening
a
connection
is
inexpensive
.
..
[#
amongst
]
https
://
www
.
youtube
.
com
/
watch
?
v
=
7
WJXHY2OXGE
...
...
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