Cache::Null(3pm) User Contributed Perl Documentation Cache::Null(3pm)NAME
Cache::Null - Null implementation of the Cache interface
SYNOPSIS
use Cache::Null;
my $cache = Cache::Null->new();
See Cache for the usage synopsis.
DESCRIPTION
The Cache::Null class implements the Cache interface, but does not actually persist data. This is useful when developing and debugging a
system and you wish to easily turn off caching. As a result, all calls return results indicating that there is no data stored.
CONSTRUCTOR
my $cache = Cache::Null->new( %options )
The constructor takes cache properties as named arguments, for example:
my $cache = Cache::Null->new( default_expires => '600 sec' );
See 'PROPERTIES' below and in the Cache documentation for a list of all available properties that can be set. However it should be noted
that all the existing properties, such as default_expires, have no effect in a Null cache.
METHODS
See 'Cache' for the API documentation.
SEE ALSO
Cache
AUTHOR
Chris Leishman <chris@leishman.org>
Based on work by DeWitt Clinton <dewitt@unto.net>
COPYRIGHT
Copyright (C) 2003-2006 Chris Leishman. All Rights Reserved.
This module is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either expressed or implied. This program is free software;
you can redistribute or modify it under the same terms as Perl itself.
$Id: Null.pm,v 1.4 2006/01/31 15:23:58 caleishm Exp $
perl v5.12.4 2011-08-05 Cache::Null(3pm)
Check Out this Related Man Page
Cache::Object(3pm) User Contributed Perl Documentation Cache::Object(3pm)NAME
Cache::Object -- the data stored in a Cache.
DESCRIPTION
Object is used by classes implementing the Cache interface as an object oriented wrapper around the data. End users will not normally use
Object directly, but it can be retrieved via the get_object method on the Cache::Cache interface.
SYNOPSIS
use Cache::Object;
my $object = new Cache::Object( );
$object->set_key( $key );
$object->set_data( $data );
$object->set_expires_at( $expires_at );
$object->set_created_at( $created_at );
METHODS
new( )
Construct a new Cache::Object.
PROPERTIES
(get|set)_accessed_at
The time at which the object was last accessed. Various cache implementations will use the accessed_at property to store information
for LRU algorithms. There is no guarentee that all caches will update this field, however.
(get|set)_created_at
The time at which the object was created.
(get|set)_data
A scalar containing or a reference pointing to the data to be stored.
(get|set)_expires_at
The time at which the object should expire from the cache.
(get|set)_key
The key under which the object was stored.
(get|set)_size
The size of the frozen version of this object
SEE ALSO
Cache::Cache
AUTHOR
Original author: DeWitt Clinton <dewitt@unto.net>
Last author: $Author: dclinton $
Copyright (C) 2001-2003 DeWitt Clinton
perl v5.12.4 2009-03-01 Cache::Object(3pm)
Does anyone know how the unix buffer / cache is set in a Solaris based system ?
( I presume it is a kernel based setting )
I notice from SAR -d that my read cache is consistently at 100% but my write cache frequently falls below 65%. What does this mean. Should I be tuning the write cache and... (1 Reply)
hi forum
i beginning with script and i want test un null variable in a schell
i just don t know the syntax here is a litle example
y=test
echo $y
unset y
echo $y (so here Y = Null)
if Y=Null
then
echo "y is null"
exit
fi (1 Reply)
Hi,
i wrote If Conditions in my script, it's returns null and some values.
but i am unable to find when Null value getting. bec we need modification according null vales.
pls help me on this. (2 Replies)
Hi All,
I have a problem with Null values while reading line by line from a text file. I wrote a shell script to read set of file names from a text file line by line, and zipping the each individual file and copying those zip files into some separate directory, and removing the original file... (3 Replies)
Hi,
Can someone help me comparing Null values.
Scenario is as follows:
I have a variable which "cache_prd" which can have either some integer or nothing(Null)
if it is integer I have to again do some comparision but these comparisons give me this error:( "line 32: [: 95: unary operator... (3 Replies)
Hi all
I saw in Microsoft web site www.SysInternals.com a tool called CoreInfo from able to print out on screen the size of the Data and Instruction caches of your processor, the Locigal to Physical Processor mapping, the number of the CPU sockets. etc..
Do you know if in Linux is available a... (2 Replies)
Hi folks.
I work with several production servers, and I have seen in some Kernel Cache using most of the memory.
See this pic:
http://i51.tinypic.com/301nb6c.jpg
Do you think this is a smart choice? Remember these are productions servers and it is extremely necesary this does not... (6 Replies)
Hi Guru's,
I am trying to test the network speed or load by this command.
but getting error " Not Connected ". Could you guys please help.
ftp> put "|dd if=/dev/zero bs=8k count=1000000" /dev/null
Not connected.
Please use
code tags! (9 Replies)
Hi All,
This might be a basic question... I need to write a script to find all/any Speacial/Null/Control Chars and Print Line Numbers from an input file.
Output something like
Null Characters in File Name at : Line Numbers
Line = Print the line
Control Characters in File Name at : Line... (2 Replies)
Hi Forum.
I tried to search for the solution online but I couldn't find specifically what I'm trying to achieve.
I want to replace Null with 0 in column position#6; Any other values would be retained.
Before:
52653363|3407732947|28-MAR-2014... (3 Replies)