Data::Chronicle::Subscriber - Provides callback subscriptions to an efficient data storage for volatile and time-based data
This module contains helper methods which can be used to store and retrieve information on an efficient storage with below properties:
It is assumed that data to be stored are time-based meaning they change over time and the latest version is most important for us.
The module uses Redis cache to provide efficient data storage and retrieval.
In addition to caching every incoming data, it is also stored in PostgreSQL for future retrieval.
This modules hides all the internal details including distribution, caching, and database structure from the developer. He only needs to call a method to save data and another method to retrieve it. All the underlying complexities are handled by the module.
my $d = get_some_log_data(); my $chronicle_w = Data::Chronicle::Writer->new( cache_writer => $writer, dbic => $dbic, ttl => 86400, publish_on_set => 1); my $chronicle_s = Data::Chronicle::Subscriber->new( cache_reader => $subscriber); #subscribe to changes to syslog $chronicle_s->subscribe("log_files", "syslog", sub { print 'Hello World' }); #store data into Chronicle - each time we call `set` it will also call #the stored subroutine $chronicle_w->set("log_files", "syslog", $d); #unsubscribe to changes to syslog $chronicle_s->unsubscribe("log_files", "syslog");
cache_subscriber should be an instance of RedisDB.
Example:
$chronicle_writer->subscribe("category1", "name1", $code_ref);
$chronicle_writer->unsubscribe("category1", "name1");
Binary.com, <support at binary.com>
<support at binary.com>
Please report any bugs or feature requests to bug-data-chronicle at rt.cpan.org, or through the web interface at http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Data-Chronicle. I will be notified, and then you'll automatically be notified of progress on your bug as I make changes.
bug-data-chronicle at rt.cpan.org
You can find documentation for this module with the perldoc command.
perldoc Data::Chronicle::Subscriber
You can also look for information at:
RT: CPAN's request tracker (report bugs here)
http://rt.cpan.org/NoAuth/Bugs.html?Dist=Data-Chronicle
AnnoCPAN: Annotated CPAN documentation
http://annocpan.org/dist/Data-Chronicle
CPAN Ratings
http://cpanratings.perl.org/d/Data-Chronicle
Search CPAN
https://metacpan.org/release/Data-Chronicle/
BUILDALL, BUILDARGS, DEMOLISHALL, DOES, does, dump
To install Data::Chronicle, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Data::Chronicle
CPAN shell
perl -MCPAN -e shell install Data::Chronicle
For more information on module installation, please visit the detailed CPAN module installation guide.