persistTo and replicateTo

Hi @daschl,
Thanks for your response.
Few questions daschl…

  1. can you explain me in simple words what persistTo and replicateTo do.
  2. if we don’t use persistTo and replicateTo what that causes because as of now we are not using these operations but our Data Architect recomments us to use this ?
  3. Do we have any standards on persist_to and replicat_to for Couchbase? what usually follows…

Thanks
Kritesh