1Dancer::Route::Cache(3)User Contributed Perl DocumentatioDnancer::Route::Cache(3)
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NAME

6       Dancer::Route::Cache - route caching mechanism for Dancer
7

VERSION

9       version 1.3512
10

SYNOPSIS

12           my $cache = Dancer::Route::Cache->new(
13               path_limit => 300, # optional, defaults to 600 (routes to cache)
14               size_limit => 5M,  # optional, defaults to 10M (10MB)
15           );
16
17           # storing a path
18           # /new/item/ is the path, $route is a compiled route
19           $cache->store_path( 'get', '/new/item/', $route );
20           my $cached_route = $cache->route_from_path('/new/item/');
21

DESCRIPTION

23       When Dancer first starts, it has to compile a regexp list of all the
24       routes.  Then, on each request it goes over the compiled routes list
25       and tries to compare the requested path to a route.
26
27       A major drawback is that Dancer has to go over the matching on every
28       request, which (especially on CGI-based applications) can be very time
29       consuming.
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31       The caching mechanism allows one to cache some requests to specific
32       routes (but NOT specific results) and run those routes on a specific
33       path. This allows us to speed up Dancer quite a lot.
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METHODS/SUBROUTINES

36   new(@args)
37       Creates a new route cache object.
38
39           my $cache = Dancer::Route::Cache->new(
40               path_limit => 100,   # only 100 paths will be cached
41               size_limit => '30M', # max size for cache is 30MB
42           );
43
44       Please check the "ATTRIBUTES" section below to learn about the
45       arguments for "new()".
46
47   route_from_path($path)
48       Fetches the route from the path in the cache.
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50   store_path( $method, $path => $route )
51       Stores the route in the cache according to the path and $method.
52
53       For developers: the reason we're using an object for this and not
54       directly using the registry hash is because we need to enforce the
55       limits.
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57   parse_size($size)
58       Parses the size wanted to bytes. It can handle Kilobytes, Megabytes or
59       Gigabytes.
60
61       NOTICE: handles bytes, not bits!
62
63           my $bytes = $cache->parse_size('30M');
64
65           # doesn't need an existing object
66           $bytes = Dancer::Route::Cache->parse_size('300G'); # works this way too
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68   route_cache_size
69       Returns a rough calculation the size of the cache. This is used to
70       enforce the size limit.
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72   route_cache_paths
73       Returns all the paths in the cache. This is used to enforce the path
74       limit.  Please be careful if you use "mount" in Plack::Builder and some
75       applications - routes are linked with applications and same path may be
76       in some applications but with different handlers!
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ATTRIBUTES

79   size_limit($limit)
80       Allows one to set a size limit of the cache.
81
82       Returns the limit (post-set).
83
84           $cache->size_limit('10K');      # sets limit
85           my $limit = $cache->size_limit; # gets limit
86
87   path_limit($limit)
88       A path limit. That is, the amount of paths that whose routes will be
89       cached.
90
91       Returns the limit (post-set).
92
93           $cache->path_limit('100');      # sets limit
94           my $limit = $cache->path_limit; # gets limit
95

AUTHOR

97       Dancer Core Developers
98

100       This software is copyright (c) 2010 by Alexis Sukrieh.
101
102       This is free software; you can redistribute it and/or modify it under
103       the same terms as the Perl 5 programming language system itself.
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107perl v5.30.0                      2019-07-26           Dancer::Route::Cache(3)
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