Solr spellcheck configuration

solrconfig.xml

<requestHandler name="/select" class="solr.SearchHandler">
  <arr name="last-components">
    <str>spellcheck</str>
  </arr>
</requestHandler>

<searchComponent name="spellcheck" class="solr.SpellCheckComponent">
  <str name="queryAnalyzerFieldType">textSpell</str>
  <lst name="spellchecker">
    <str name="name">default</str>
    <str name="field">description</str>
    <str name="classname">solr.DirectSolrSpellChecker</str>
    <str name="buildOnOptimize">true</str>
    <!-- the spellcheck distance measure used, the default is the internal levenshtein -->
    <str name="distanceMeasure">internal</str>
    <!-- minimum accuracy needed to be considered a valid spellcheck suggestion -->
    <float name="accuracy">0.5</float>
    <!-- the maximum #edits we consider when enumerating terms: can be 1 or 2 -->
    <int name="maxEdits">2</int>
    <!-- the minimum shared prefix when enumerating terms -->
    <int name="minPrefix">1</int>
    <!-- maximum number of inspections per result. -->
    <int name="maxInspections">5</int>
    <!-- minimum length of a query term to be considered for correction -->
    <int name="minQueryLength">4</int>
    <!-- maximum threshold of documents a query term can appear to be considered for correction -->
    <float name="maxQueryFrequency">0.01</float>
    <!-- Require suggestions to occur in 0.1% of the documents -->
    <float name="thresholdTokenFrequency">.0001</float>
  </lst>
</searchComponent>