Avoid duplicate data into flash storage

Question

Hi I am working on nRF52832 board. 
 i am using fds library to store my data. data contains MAC address. Each MAC address is stored in each record with same file ID and key. 
 How to avoid storing dulicate data(MAC address) to flash? 
 is there any API to solve this issue? 
 can i use fds_record_iterate for this issue? 
 
 Thanks

Andy · Answer

Yes, that sounds like the best way to solve it. 
 Read record by record, comparing the new address to the contents of the record. If you don't find the address in the existing records, create a new record, otherwise don't.

Rekha · Answer

Hi I have successfully implemented this feature using fds_record_find() API . I first acquired data from flash using fds_record_find() and then compared with new data to be flashed. 
 
 Thanks for your support.