title: How to improve performance of mongo simple search query
body: <p>This is explanation of a simple search in mongodb, its taking more than 2.4 secs and more to retrieve data.If i add index(search params) it takes more than 5 secs.</p>
  
  <p><strong>Query</strong></p>
  
  <pre><code>    db.CX_EMPLOYEES.find({ "$or" : [{ "AML_FULLNAME" : /RAJ/ }, 
  { "AML_FULLALIAS" : /RAJ/ }] })
  </code></pre>
  
  <p><strong>Explain</strong></p>
  
  <pre><code> {
          "cursor" : "BasicCursor",
          "isMultiKey" : false,
          "n" : 79,
          "nscannedObjects" : 504570,
          "nscanned" : 504570,
          "nscannedObjectsAllPlans" : 504570,
          "nscannedAllPlans" : 504570,
          "scanAndOrder" : false,
          "indexOnly" : false,
          "nYields" : 0,
          "nChunkSkips" : 0,
          "millis" : 2423,
          "indexBounds" : {},
          "server" : "SERVER:27017"
      }
  </code></pre>