Microsoft Technology Licensing, LLC

Eric Dean Lee

Alexander Budovski

Ashmita Raju

Srikanth Sampath

Methods, systems and computer program products are provided for transaction log validation in a database transaction log service. A transaction log service may perform egress validation to confirm transaction logs match previously served transaction logs and are free of corruption. A transaction log service may determine whether a transaction log (e.g., in the form of a log block) was previously served based on transaction log (e.g., log block) identity indicating a position in a logical stream of transaction logs (e.g., log blocks). Egress validation may improve log service reliability by providing an added layer of defense against corruption of a transaction log payload.

Transaction log validation in a database transaction log service

Methods, systems, and computer program products are provided for consolidating transaction log requests and transaction logs in a database transaction log service. A scalable log service may manage log requests and logs to reduce resource consumption, such as memory and I/O. Log requests may be managed by consolidating (e.g., organizing, merging and/or de-duplicating) the log requests. Transaction log requests may be mapped to read requests for transaction log storage devices in less than a one-to-one ratio. Transaction logs may be managed by using the consolidated log requests to consolidate (e.g., and prefetch) transaction logs from multiple cache and/or storage tiers to a log pool cache. Log requests may be served from the log pool cache.

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Eric Dean Lee