futzing with redis a bit

rails/hamster/app/helpers/solr_helper.rb

@@ -1,19 +1,30 @@
 module SolrHelper
   $select_url = 'http://localhost:8983/solr/select/'
+  $redis = '/home/me/repos/redis.git/src/redis-cli'
 
   def get_results(search)
+    cached = `#{$redis} GET "query:#{search}"`
+
+    if cached.strip().length > 0
+      # puts "cached=#{cached}"
+      xml_results = REXML::Document.new cached
+    else
       raw_results = open("#{$select_url}?q=#{search}").read
+      # puts "caching '#{raw_results}'"
+      `#{$redis} SET "query:#{search}" '#{raw_results}'`
+
       xml_results = REXML::Document.new raw_results
+    end
 
-      results = []
-      REXML::XPath.each(xml_results, '//result/doc') do |doc|
-        results.push({
-          :id => doc.elements['./str[@name="id"]'],
-          :description => doc.elements['./str[@name="name"]']
-        })
-      end
+    results = []
+    REXML::XPath.each(xml_results, '//result/doc') do |doc|
+      results.push({
+        :id => doc.elements['./str[@name="id"]'],
+        :description => doc.elements['./str[@name="name"]']
+      })
+    end
 
-      return results
+    return results
   end
 
 end