Comments for RubyAgent http://www.rubyagent.com Ruby on Blackboard Wed, 08 Sep 2010 08:28:39 +0000 http://wordpress.org/?v=2.7.1 hourly 1 Comment on Simple Example - Calculator Agent by ondrej http://www.rubyagent.com/2007/05/simple-example-calculator-agent/comment-page-1/#comment-660 ondrej Tue, 04 May 2010 22:44:16 +0000 http://www.rubyagent.com/?p=7#comment-660 hi Tilo, sure, you are right. however, this is a usual problem - that same could be said about databases, mq servers, etc. you may find additional functionality for widely used solutions that is minimizing the risks that you mentioned (e.g. a replication of databases instances). but probably you will not find anything for the ruby blackboard rinda to make it fail-over and/or scalable - but it is not because the blackboard is a bad concept or idea, it is about missing additional tools, that would help you to start more instances, that would replicate the actual state over the started instances, would be able to detect a failed instance, propagate that event and handle it somehow... there are several tuple space implementations, some of them even commercial, that provide some features in this area, e.g. <a href="http://www.gigaspaces.com" rel="nofollow">gigaspaces</a>, but it is for java and .net. rinda, a ruby blackboard implementation, is ok. with general monitoring tools, like <a href="http://mmonit.com/monit" rel="nofollow">monit</a>, you will get a nicely working solution. but if you need more, probably you should check another implementations. bye hi Tilo,
sure, you are right.
however, this is a usual problem - that same could be said about databases, mq servers, etc.

you may find additional functionality for widely used solutions that is minimizing the risks that you mentioned (e.g. a replication of databases instances).

but probably you will not find anything for the ruby blackboard rinda to make it fail-over and/or scalable - but it is not because the blackboard is a bad concept or idea, it is about missing additional tools, that would help you to start more instances, that would replicate the actual state over the started instances, would be able to detect a failed instance, propagate that event and handle it somehow…

there are several tuple space implementations, some of them even commercial, that provide some features in this area, e.g. gigaspaces, but it is for java and .net.

rinda, a ruby blackboard implementation, is ok. with general monitoring tools, like monit, you will get a nicely working solution. but if you need more, probably you should check another implementations.

bye

]]> Comment on Simple Example - Calculator Agent by Tilo http://www.rubyagent.com/2007/05/simple-example-calculator-agent/comment-page-1/#comment-659 Tilo Mon, 26 Apr 2010 17:20:25 +0000 http://www.rubyagent.com/?p=7#comment-659 the problem with the Blackboard approach is that it is a communication bottleneck and a single point of failure in what is supposedly a parallel approach -- if the communication with the blackboard breaks or it gets too much traffic, everything breaks! the problem with the Blackboard approach is that it is a communication bottleneck and a single point of failure in what is supposedly a parallel approach — if the communication with the blackboard breaks or it gets too much traffic, everything breaks!

]]> Comment on Scheduling of Ruby Agents using Cron by ondrej http://www.rubyagent.com/2008/02/scheduling-of-ruby-agents-using-cron/comment-page-1/#comment-467 ondrej Thu, 09 Apr 2009 17:57:20 +0000 http://www.rubyagent.com/?p=19#comment-467 of course (a few months later) of course (a few months later)

]]> Comment on Scheduling of Ruby Agents using Cron by naniter http://www.rubyagent.com/2008/02/scheduling-of-ruby-agents-using-cron/comment-page-1/#comment-466 naniter Thu, 09 Apr 2009 17:50:08 +0000 http://www.rubyagent.com/?p=19#comment-466 have you ever seen nanite? have you ever seen nanite?

]]> Comment on Simple Example - Calculator Agent by david http://www.rubyagent.com/2007/05/simple-example-calculator-agent/comment-page-1/#comment-222 david Sun, 20 Apr 2008 20:35:32 +0000 http://www.rubyagent.com/?p=7#comment-222 hey guys! nice project! hey guys! nice project!

]]> Comment on Simple Example - Calculator Agent by olga http://www.rubyagent.com/2007/05/simple-example-calculator-agent/comment-page-1/#comment-42 olga Mon, 21 May 2007 07:17:52 +0000 http://www.rubyagent.com/?p=7#comment-42 Nice and concise demonstration. Works out of the box. Great playground for beginner's experiments with rinda.Thx Nice and concise demonstration. Works out of the box. Great playground for beginner’s experiments with rinda.Thx

]]> Comment on Starting Multi-Agent System Environment by RubyAgent » Read Message On Blackboard http://www.rubyagent.com/2007/03/starting-multi-agent-system-environment/comment-page-1/#comment-40 RubyAgent » Read Message On Blackboard Fri, 18 May 2007 10:12:18 +0000 http://www.rubyagent.com/?p=8#comment-40 [...] start the rinda.rb code (for more details see the post about starting multi-agent system environment), then, in a separate console, start the write.rb (for more details see the post about writing a [...] [...] start the rinda.rb code (for more details see the post about starting multi-agent system environment), then, in a separate console, start the write.rb (for more details see the post about writing a [...]

]]> Comment on Starting Multi-Agent System Environment by RubyAgent » Take Message From Blackboard http://www.rubyagent.com/2007/03/starting-multi-agent-system-environment/comment-page-1/#comment-10 RubyAgent » Take Message From Blackboard Sat, 31 Mar 2007 21:33:13 +0000 http://www.rubyagent.com/?p=8#comment-10 [...] start the rinda.rb code (for more details see the post about starting multi-agent system environment), then, in a separate console, start the write.rb (for more details see the post about writing a [...] [...] start the rinda.rb code (for more details see the post about starting multi-agent system environment), then, in a separate console, start the write.rb (for more details see the post about writing a [...]

]]> Comment on Starting Multi-Agent System Environment by RubyAgent » Write Message To Blackboard http://www.rubyagent.com/2007/03/starting-multi-agent-system-environment/comment-page-1/#comment-9 RubyAgent » Write Message To Blackboard Sat, 31 Mar 2007 20:54:06 +0000 http://www.rubyagent.com/?p=8#comment-9 [...] start the rinda.rb code (for more details see the post about starting multi-agent system environment) and then, in a separate console, type: Bash [Show Styled [...] [...] start the rinda.rb code (for more details see the post about starting multi-agent system environment) and then, in a separate console, type: Bash [Show Styled [...]

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