1CHI::Driver::Memory(3)User Contributed Perl DocumentationCHI::Driver::Memory(3)
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6 CHI::Driver::Memory - In-process memory based cache
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9 version 0.60
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12 use CHI;
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14 my $hash = {};
15 my $cache = CHI->new( driver => 'Memory', datastore => $hash );
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17 my $cache = CHI->new( driver => 'Memory', global => 1 );
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19 my $cache = CHI->new( driver => 'Memory', global => 0 );
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22 This cache driver stores data on a per-process basis. This is the
23 fastest of the cache implementations, but data can not be shared
24 between processes. Data will remain in the cache until cleared,
25 expired, or the process dies.
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27 To maintain the same semantics as other caches, references to data
28 structures are deep-copied on set and get. Thus, modifications to the
29 original data structure will not affect the data structure stored in
30 the cache, and vice versa. See CHI::Driver::RawMemory for a faster
31 memory cache that sacrifices this behavior.
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34 When using this driver, the following options can be passed to
35 CHI->new() in addition to the CHI. One of datastore or global must be
36 specified, or else a warning (possibly an error eventually) will be
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39 datastore [HASHREF]
40 A reference to a hash to be used for storage. Within the hash, each
41 namespace is used as a key to a second-level hash. This hash may
42 be passed to multiple CHI::Driver::Memory constructors.
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44 global [BOOL]
45 Use a standard global datastore. Multiple caches created with this
46 set to true will see the same data. Before 0.21, this was the
47 default behavior; now it must be specified explicitly (to avoid
48 accidentally sharing the same datastore in unrelated code).
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50 If this is set to false then datastore will be set to a new
51 reference to a hash.
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54 For size aware caches, this driver implements an 'LRU' policy, which
55 discards the least recently used items first. This is the default
56 policy.
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59 CHI::Driver::RawMemory, CHI
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62 Jonathan Swartz <swartz@pobox.com>
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65 This software is copyright (c) 2012 by Jonathan Swartz.
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67 This is free software; you can redistribute it and/or modify it under
68 the same terms as the Perl 5 programming language system itself.
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72perl v5.30.1 2020-01-29 CHI::Driver::Memory(3)