Login or Register to Ask a Question and Join Our Community


Software Releases - RSS News

Crossroads Load Balancer 2.00 (Default branch)

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Special Forums News, Links, Events and Announcements Software Releases - RSS News Crossroads Load Balancer 2.00 (Default branch)
# 1  
Old 08-08-2008
Crossroads Load Balancer 2.00 (Default branch)
ImageCrossroads is a daemon running in user space, and features extensive configurability, polling of back ends using wake up calls, status reporting, many algorithms to select the 'right' back end for a request (and user-defined algorithms for very special cases), and much more. Crossroads is service-independent: it is usable for any TCP service, such as HTTP(S), SSH, SMTP, and database connections. In the case of HTTP balancing, Crossroads can provide session stickiness for back end processes that need sessions, but aren't session-aware of other back ends. Crossroads can be run as a stand-alone daemon or via inetd.License: GNU General Public License v3Changes:
This version is a complete rewrite. It is now a multi-threaded program (as opposed to a forking daemon), which greatly enhances performance and decreases system load. The balancer is now configured via the command line (as opposed to a configuration file). This version is beta code until proven in the field. Historic stable 1.xx versions are still available.Image

More...
Login or Register to Ask a Question

Previous Thread | Next Thread
Login or Register to Ask a Question

LEARN ABOUT MOJAVE

dbix::class::storage::dbi::replicated::balancer::random5.18

DBIx::Class::Storage::DBI::Replicated::Balancer::Random(User Contributed Perl DocumentatDBIx::Class::Storage::DBI::Replicated::Balancer::Random(3)

NAME

       DBIx::Class::Storage::DBI::Replicated::Balancer::Random - A 'random' Balancer

SYNOPSIS

       This class is used internally by DBIx::Class::Storage::DBI::Replicated.	You shouldn't need to create instances of this class.

DESCRIPTION

       Given a pool (DBIx::Class::Storage::DBI::Replicated::Pool) of replicated database's (DBIx::Class::Storage::DBI::Replicated::Replicant),
       defines a method by which query load can be spread out across each replicant in the pool.

       This Balancer uses List::Util keyword 'shuffle' to randomly pick an active replicant from the associated pool.  This may or may not be
       random enough for you, patches welcome.

ATTRIBUTES

       This class defines the following attributes.

   master_read_weight
       A number greater than 0 that specifies what weight to give the master when choosing which backend to execute a read query on. A value of 0,
       which is the default, does no reads from master, while a value of 1 gives it the same priority as any single replicant.

       For example: if you have 2 replicants, and a "master_read_weight" of 0.5, the chance of reading from master will be "20%".

       You can set it to a value higher than 1, making master have higher weight than any single replicant, if for example you have a very
       powerful master.

METHODS

       This class defines the following methods.

   next_storage
       Returns an active replicant at random.  Please note that due to the nature of the word 'random' this means it's possible for a particular
       active replicant to be requested several times in a row.

AUTHOR

       John Napiorkowski <john.napiorkowski@takkle.com>

LICENSE

       You may distribute this code under the same terms as Perl itself.

perl v5.18.2							    2013-07-12		DBIx::Class::Storage::DBI::Replicated::Balancer::Random(3)