Consistency of data in persistent memory

摘要

Consistency of data stored in persistent memory is maintained using separate commit and harden operations for a transaction. A transaction is committed with a processing device, the committing including marking an end of an atomic operation on a modified object from the transaction, creating a new copy of the modified object, and storing a mapping of the modified object to the new copy of the modified object in a recorded log. A checksum identifying the modified object is created and stored in the recorded log. The transaction is hardened by storing the modified object and the recorded log from cache into persistent memory.

主权项

1. A computer-implemented method for providing consistency of data stored in persistent memory, the method comprising:
committing, by a processing device, a transaction in cache, the committing including marking an end of an atomic operation on a modified object from the transaction, creating a new copy of the modified object after a delay that corresponds to a next write operation, and storing a mapping of the modified object to the new copy of the modified object in a recorded log; calculating a checksum that identifies the modified object and storing the checksum in the recorded log; and hardening the transaction, the hardening including storing the modified object and the recorded log from the cache into persistent memory.