Snowflake inc. (20240330296). ACTIVE INVALIDATION OF METADATA CACHE ENTRIES simplified abstract
Contents
ACTIVE INVALIDATION OF METADATA CACHE ENTRIES
Organization Name
Inventor(s)
Benoit Dageville of San Mateo CA (US)
Lyuping Du of Issaquah WA (US)
Martin Hentschel of Berlin (DE)
Elkhan Mammedov of Berlin (DE)
Vikram Wakade of Sammamish WA (US)
ACTIVE INVALIDATION OF METADATA CACHE ENTRIES - A simplified explanation of the abstract
This abstract first appeared for US patent application 20240330296 titled 'ACTIVE INVALIDATION OF METADATA CACHE ENTRIES
Simplified Explanation: The patent application describes techniques for actively invalidating cache entries based on timestamps stored by a computing instance.
Key Features and Innovation:
- Computing instance stores first and second timestamps from a version update log in a database.
- It reads records from the version update log associated with timestamps greater than the second timestamp.
- Invalidates cache entries with older versions based on the records, retaining a second set of cache entries.
- Executes queries using the second set of cache entries.
Potential Applications: This technology can be applied in various systems where cache management and version control are crucial, such as databases, content delivery networks, and web servers.
Problems Solved:
- Efficiently managing cache entries based on version updates.
- Ensuring data consistency and accuracy in cached information.
- Reducing unnecessary data retrieval and processing.
Benefits:
- Improved performance by maintaining up-to-date cache entries.
- Reduced load on the system by selectively invalidating outdated cache entries.
- Enhanced data integrity and reliability in cached information.
Commercial Applications: The technology can be utilized in database management systems, e-commerce platforms, and real-time data processing applications to optimize cache performance and ensure data consistency.
Questions about Cache Invalidation: 1. How does active cache invalidation based on timestamps improve system performance? 2. What are the potential challenges in implementing this cache invalidation technique?
Frequently Updated Research: Stay updated on advancements in cache management systems, database optimization techniques, and real-time data processing technologies to enhance the efficiency of cache invalidation processes.
Original Abstract Submitted
techniques for active invalidation of cache entries are described. a first timestamp and a second timestamp are stored by a compute instance, the first timestamp corresponding to an initial time the computing instance read from a version update log in a database and the second timestamp corresponding to a last time the computing instance read from the version update log in the database. the compute instance can read records from the version update log that are associated with version timestamps greater than the second timestamp. the compute instance can invalidate a first set of cache entries with older versions stored in a cache based on reading the records, retaining a second set of cache entries, and then execute a query using the second set of cache entries.
