[ANN] PRBackupToMagmaPersistency

[Keith Hodges]

PRBackupToMagmaPersistency

In the same way that PRImagePersistency periodically
saves the image to disk, this scheme commits the pier model to the 
database.

This leaves the pier model in memory for speed, and it does not slow 
down edits
at all with database commits. It should only write the model changes to 
disk, and so should be quite efficient and can be run more frequently 
than makes sense for PRImagePersistency.

This scheme also supports the ability to upgrade the image and reload  
data from the persistent backup.

Keith





		
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