Eliminate redundant database roundtrips in high-frequency RAP behaviors and custom BAdIs. Generate ABAP Cloud Shared Memory root classes, safe read/write locking handles, and automated cache invalidation.
Master in-memory caching, SQL tuning, and Tier 1 extensibility in The SAP Clean Core & ABAP Cloud Handbook.
Shared Memory Objects reside in the SAP instance shared memory pool. All dialog and background work processes read the same buffer without copying objects into session heaps.
With instance versioning enabled, writers create a shadow version in the background while existing readers continue accessing the previous active version without lock contention.
When configuration tables change in SAP Fiori apps, a RAP determination or save hook triggers invalidate_area() to refresh all server nodes instantly.
Part of the SAP Clean Core Engineering Suite • Cross-referenced with Tool #81 (Rate Limiter) and Tool #75 (Circuit Breaker)