title: Most efficient way to insert large number of items with typeorm
body: <p>Does anyone know which is the most efficient way to insert large number of items with typeorm ?
  Currently I am using the <code>save</code> method with <code>{ chunk: 500 }</code> option but it is very slow</p>
  <p>The object I am passing in contains 1 row to a parent table and &gt;35000 rows (child array) to a child table</p>
  <p>If I slice the child array to 1000 objects then the insert takes about 10 seconds</p>
  <p>Thanks,
  Jani</p>