tdengine utl cache

TDengine is a high-performance time-series database that is designed to support big data and IoT applications. It is optimized for fast data ingestion, real-time analytics, and efficient data storage. One of the features of TDengine is the UT cache, which is a memory-based cache that is used to improve database performance.

The UT cache is a unified cache that is used to store both data and metadata. It is designed to be highly efficient and to minimize disk I/O. When data is inserted into the database, it is first stored in the UT cache. This allows the data to be quickly accessed for queries and analytics. The UT cache also stores metadata, such as table definitions and index information. This information is used to optimize query performance and to minimize disk I/O.

The UT cache is designed to be highly configurable. Administrators can adjust the size of the cache to optimize performance for their specific use case. They can also adjust the cache eviction policy to ensure that the most frequently accessed data remains in the cache.

Overall, the UT cache is an important feature of TDengine that helps to improve database performance and scalability. It allows TDengine to efficiently handle large amounts of time-series data and to support real-time analytics and IoT applications