Autosuggest best practice / feedback

[Doug McKenzie <do...@firebox.com>]

Hi there,

I'm relatively new to Solr and have been playing around with it for a 
few weeks now. I've got a system setup now that I'm currently quite 
happy with and is returning some decent results (although there's always 
room for improvement). Just hoping to get some feedback on the setup

Currently running 2 seperate Solr engines, one tasked with storing 
products and their various info, the other is storing previous site 
searches and is being used for auto suggest functionality.

The auto suggest schema :

<fieldType name="text_ngram" class="solr.TextField" 
positionIncrementGap="100">
<analyzer type="index">
<tokenizer class="solr.KeywordTokenizerFactory"/>
<filter class="solr.LowerCaseFilterFactory"/>
<filter class="solr.StopFilterFactory" ignoreCase="true" 
words="stopwords_en.txt" enablePositionIncrement="true"/>
<filter class="solr.EdgeNGramFilterFactory" minGramSize="2" 
maxGramSize="15" side="front"/>
</analyzer>
<analyzer type="query">
<tokenizer class="solr.KeywordTokenizerFactory"/>
<filter class="solr.LowerCaseFilterFactory"/>
</analyzer>
</fieldType>

Stopwords is being used to filter out rude words from previous searches 
(is this the best way of doing things?)

Also looking at implementing a "Did you mean?" suggestor which will 
probably search against a WhitespaceTokened field of the same data 
rather than this one.

Any thoughts / feedback / comments / criticism / biscuits appreciated

Cheers
Doug

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