Maximize SAP application server buffer hit ratios and reduce HANA database roundtrips. Configure Single-Record, Generic, and Full buffering definitions, CDS entity buffering annotations, and SQL bypass audit rules.
Master CDS view entity tuning, SQL optimization, and Clean Core data access in The SAP Clean Core & ABAP Cloud Handbook.
Table buffers reside directly inside application server memory. Successful hits consume ~0.02ms with zero network roundtrips and zero HANA CPU consumption.
When a buffered table is modified, an invalidation telegram is written to cluster table DDLOG. Other server instances purge their buffer during the next synchronization cycle.
Statements like SELECT DISTINCT, aggregate functions (SUM, COUNT), and subqueries automatically bypass the buffer and hit HANA directly.
Part of the SAP Clean Core Engineering Suite • Cross-referenced with Tool #82 (SHMA) and Tool #49 (CDS Profiler)