Page based data persistency

A method, comprising:

• storing data associated with a state machine at a computing node, the data being stored by at least allocating a first data page for storing at least a portion of the data associated with the state machine, the data associated with the state machine including one or more snapshots of data at the computing node, and the one or more snapshots being generated at one or more corresponding checkpoints;
• in response to the allocation of the first data page, adding, to a first page list in an in-memory buffer at the computing node, a first page reference to the first data page;
• and
• in response to the in-memory buffer reaching a maximum capacity due to the first page reference being added to the first page list,
• allocating, in a secondary data store at the computing node, a second data page for storing the first page list, and
• adding, to a second page list in the in-memory buffer, a second page reference to the second data page in the secondary data store.

A non-transitory computer-readable medium storing instructions, which when executed by at least one data processor, result in operations comprising:

• storing data associated with a state machine at a computing node, the data being stored by at least allocating a first data page for storing at least a portion of the data associated with the state machine, the data associated with the state machine including one or more snapshots of data at the computing node, and the one or more snapshots being generated at one or more corresponding checkpoints;
• in response to the allocation of the first data page, adding, to a first page list in an in-memory buffer at the computing node, a first page reference to the first data page;
• and
• in response to the in-memory buffer reaching a maximum capacity due to the first page reference being added to the first page list,
• allocating, in a secondary data store at the computing node, a second data page for storing the first page list, and
• adding, to a second page list in the in-memory buffer, a second page reference to the second data page in the secondary data store.