KB4538118 - Improvement: Enable hybrid buffer pool read caching in SQL Server 2019

Applies to: SQL Server 2019 on LinuxSQL Server 2019 on Windows


This improvement enablesHybrid buffer pool read caching in Microsoft SQL Server 2019. This includes the followingfeatures:
  • Access to read-only pages in persistent memory is tracked.
  • Hot read-only pages are migrated to DRAM-based buffer pool.
  • Access is allows to hot data at DRAM speeds.


Direct access to data in persistent memory is a little slower than accessto data in the DRAM-based buffer pool.


This improvement is included in the following cumulative update for SQL Server:
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