Linux IPC with Persistence Layer

Looking for a UDS like mechanisms for communication between Linux processes, where the receiver can go offline for some time and once back should be able to retrieve all the messages the sender has sent. There no need for the sender to have acknowledgement that the receiver read the message.

Dear hacker community, and suggestions for libraries out there which can help with? We have implemented some proprietary stuff with files, but it is complex and I am looking for a simpler alternative.