08904ba8__in_Ruby__Python_and_C_Clients__What_should_the_client_do_
[Error Code Received] LCB_ENOMEM [What does it mean?] The server is out of memory [What should the client do?] 
This can occur during memory pressure when documents in memory are not yet flushed to disk. Backoff and retry after some time.
Handling Runtime Errors in Ruby, Python and C Clients
What should the client do?