Rule engine in perl [closed] - perl

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I am looking out for a rule engine in perl.
Would like to know what are the features, that should be kept in mind related to the same.
Also the context is a travel domain and the business rule related to it.
Would appreciate your views on the same.

I believe your question is answered at http://www.perlmonks.org/index.pl?node_id=722668 and other places (google for Business Rule engine Perl). Some of the suggestions are:
PIE
Bricks (could not find anything beyond this one site)
VS::RuleEngine
Rule::Engine

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Database Design / Examples for Tags [closed]

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Closed 9 years ago.
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I am planning to create a website which will contain number of documents and each document can be tagged with one or more tags.
I am planning to use mongodb for this. So can you guys suggest me how should I design the backend in mongodb means the database design.
Also could you please suggest any example website which has such kind of functionality that I can use as reference.
Thanks in advance
A very much visible example for this would stackoverflow itself.
It has questions which have many tags.
Example:
{_id:123,link:url,subject:'test subject',desction:'test description',tags:[{name:'mongodb',desc:'mongodb'},{name:'groovy',desc:'groovy'}]}

hosted service to call a webpage at a scheduled time? [closed]

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Closed 8 years ago.
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I am looking for a hosted service to call certain webpages at a certain time. I am looking for a company that offers this service, anyone know of such a thing?
You might want to try Web Based Cron

Best resource to learn mediawiki? [closed]

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Could you recommend some easy-to-follow tutorials on mediawiki?
I used materials given at http://meta.wikimedia.org/wiki/Help:Contents - it was enough to install MediaWiki and to learn basics of articles creating and texts editing.
MediaWiki is actually really simple :)
Help:Formatting
Manual:FAQ
Basic Usage

book suggestions for reading on saas design and implementation [closed]

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I would like to improve my knowledge on SAAS, its design and implementation. Most of that I found on a quick search were case studies and articles promoting SAAS. Can anyone suggest me some books to start with.
I suggest you to start with reading the Multi-Tenant Data Architecture article.

Resources for how to design graph/charts well [closed]

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One of my projects needs to show users where they rank in certain calculations. I inherited the graph structure from the previous programmer and had to leave it alone while I worked on other parts of the site.
It's time to make the graphs more meaningful, so I'm looking for books/websites/etc about graphs. (Not graph theory!) Charts that convey comparisons at a glance.
Everyone suggests The Visual Display of Quantitative Information by Edward Tufte and that's spot on for what I'm looking for, so anything related to that would be great.
Naturally, personal experience about what to do or not would be helpful as well.
I found Stephen Few's book "Show Me the Numbers" very helpful.