title: Hyperledger fabric - Concurrent transactions
body: <p>i'm wondering how is possible to execute concurrent transactions in hyperledger fabric using hyperledger composer.
  When i try to submit two transactions at the same time against the same resource I get this error:</p>
  
  <blockquote>
    <p>Error trying invoke business network. Error: Peer has rejected transaction \'transaction-number\' with code MVCC_READ_CONFLICT</p>
  </blockquote>
  
  <p>Does anyone know if exist a workaround or a design pattern to avoid this?</p>