Sap-Hybris

Hybris OCC: A REST Facade Over a Stateful Monolith

SAP Commerce OCC promises a stateless REST API for headless commerce. Underneath, every request hydrates an HTTP session and routes through the same stateful facades built for the JSP storefront. The API is stateless in contract but stateful in implementation.

Hybris Populator Framework: Design Flaws and Memory Pitfalls

The SAP Commerce Converter/Populator pattern optimized for extensibility at the cost of predictability. Deep chaining, invisible runtime graphs, and JVM heap exhaustion are the consequences.