Recovery point objective enforcement
First Claim
Patent Images
1. A method of coordinating transactions committed at a primary data store with a secondary data store, the method involving a device having a processor and comprising:
- executing, by the processor, instructions that cause the device to;
store a service level agreement identifying a data loss tolerance of data stored by the primary data store and not the secondary data store;
for respective transactions committed by the primary data store, measure a synchronization lag as a duration between a transaction commit of committed data of the transaction to the primary data store, and synchronization of the committed data stored by the primary data store with the secondary data store;
based upon the synchronization lag between the transaction commit of the committed data and synchronizing the committed data to the secondary data store, estimate a current data loss potential; and
on condition of the current data loss potential exceeding the data loss tolerance specified by the service level agreement, throttle a transaction count of unsynchronized transactions pending at the primary data store until the current data loss potential no longer exceeds the data loss tolerance.
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Abstract
A maximum lag between data stores can be specified that corresponds to a recovery point objective defined in a service level agreement. Lag can be monitored during a data replication between a primary data store and a secondary data store located in geographically different regions. Activity on the primary data store including incoming data transactions can be throttled as a function of the lag and the maximum lag.
36 Citations
20 Claims
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1. A method of coordinating transactions committed at a primary data store with a secondary data store, the method involving a device having a processor and comprising:
executing, by the processor, instructions that cause the device to; store a service level agreement identifying a data loss tolerance of data stored by the primary data store and not the secondary data store; for respective transactions committed by the primary data store, measure a synchronization lag as a duration between a transaction commit of committed data of the transaction to the primary data store, and synchronization of the committed data stored by the primary data store with the secondary data store; based upon the synchronization lag between the transaction commit of the committed data and synchronizing the committed data to the secondary data store, estimate a current data loss potential; and on condition of the current data loss potential exceeding the data loss tolerance specified by the service level agreement, throttle a transaction count of unsynchronized transactions pending at the primary data store until the current data loss potential no longer exceeds the data loss tolerance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A system for coordinating transactions committed at a primary data store with a secondary data store, the system comprising:
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a service level agreement that identifies a data loss tolerance of data stored by the primary data store and not the secondary data store; a transaction monitor that; for respective transactions committed by the primary data store, measure a synchronization lag as a duration between a transaction commit of committed data of the transaction to the primary data store, and synchronization of the committed data stored by the primary data store with the secondary data store; and based upon the synchronization lag between the transaction commit of the committed data and synchronizing the committed data to the secondary data store, estimate a current data loss potential; and a transaction throttle that; performs a comparison of the current data loss potential to the data loss tolerance; chooses a transaction throttling rate based on the comparison; and throttles a transaction count of transactions pending at the primary data source according to the transaction throttling rate. - View Dependent Claims (18, 19)
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20. A computer-readable storage medium having instructions stored thereon that enable at least one processor of a device to coordinate transactions committed at a primary data store with a secondary data store, by:
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storing a service level agreement identifying a data loss tolerance of data stored by the primary data store and not the secondary data store; for respective transactions committed by the primary data store, measuring a synchronization lag as a duration between a transaction commit of committed data of the transaction to the primary data source, and synchronization of the committed data stored by the primary data store with the secondary data source; based upon the synchronization lag between the transaction commit of the committed data and synchronizing the committed data to the secondary data store, estimate a current data loss potential of data; and on condition of the current data loss potential exceeding the data loss tolerance specified by the service level agreement, throttling a transaction count of transactions at the primary data source pending at the primary data store.
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Specification