1CHI::Driver::FastMmap(3U)ser Contributed Perl DocumentatiCoHnI::Driver::FastMmap(3)
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NAME

6       CHI::Driver::FastMmap - Persistent interprocess cache via mmap'ed files
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VERSION

9       version 0.61
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SYNOPSIS

12           use CHI;
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14           my $cache = CHI->new(
15               driver     => 'FastMmap',
16               root_dir   => '/path/to/cache/root',
17               cache_size => '1m'
18           );
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DESCRIPTION

21       This cache driver uses Cache::FastMmap to store data in an mmap'ed
22       file. It is very fast, and can be used to share data between processes
23       on a single host, though not between hosts.
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25       To support namespaces, this driver takes a directory parameter rather
26       than a file, and creates one Cache::FastMMap file for each namespace.
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28       Because CHI handles serialization automatically, we pass the
29       "serializer" flag as ''; and to conform to the CHI API, we pass
30       "unlink_on_exit" as 0, so that all cache files are permanent.
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REQUIREMENTS

33       You will need to install Cache::FastMmap from CPAN to use this driver.
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CONSTRUCTOR OPTIONS

36       root_dir
37           Path to the directory that will contain the share files, one per
38           namespace.  Defaults to a directory called 'chi-driver-fastmmap'
39           under the OS default temp directory (e.g. '/tmp' on UNIX).
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41       dir_create_mode
42           Permissions mode to use when creating directories. Defaults to
43           0775.
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45       Any other constructor options not recognized by CHI are passed along to
46       Cache::FastMmap->new.
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METHODS

49       fm_cache
50           Returns a handle to the underlying Cache::FastMmap object. You can
51           use this to call FastMmap-specific methods that are not supported
52           by the general API, e.g.
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54               $self->fm_cache->get_and_set("key", sub { ... });
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SEE ALSO

57       CHI
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AUTHOR

60       Jonathan Swartz <swartz@pobox.com>
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63       This software is copyright (c) 2021 by Jonathan Swartz.
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65       This is free software; you can redistribute it and/or modify it under
66       the same terms as the Perl 5 programming language system itself.
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70perl v5.38.0                      2023-07-20          CHI::Driver::FastMmap(3)
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