Add Backup/Restore Functionality

[0xnullifier]

A backup / replica is used wildly in production and is a required thing in most production code bases.

You should be able to create backups based on options like backupTime , backupDir and write files there in a compressed way of your own choice. You can create efficient dumps by some mechanism like storing all things in a long buffer and all.

There will be multiple follow up issues so it is you chance to really boost up your points

Proposed API:

// dumping interfact
func (m *memoria) createDump() error  {
 // create a dump based on a dumping mechanism
}

// Backup interface
func (m *memoria) Backup( backupDir string) error {
   // reverse algo of the dump mechanism you made
}

//then backup looks 
store.Backup(f)