A method for sharing memory of a backup server with a primary server for data replication is provided. The method may include maintaining a plurality of identical memory regions between the primary server and the backup server. The method may also include determining at least one remote memory address on the backup server for a backup key-value pair, whereby the determining is based on the maintaining of the plurality of memory regions. The method may further include inserting a plurality of data from the primary server directly in the determined at least one remote memory address on the backup server. The method may additionally include providing a mirroring status of a memory allocator on the primary server to the backup server based on the inserting of the plurality of data from the primary server.