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The application persists data to an outbox table in a database. Once the data has been persisted another application or process can read from the outbox table and use that data to perform an operation which it can retry upon failure until completion. The outbox pattern ensures that a message was sent (e.g. to a queue) successfully at least once.
The observer pattern, as described in the Design Patterns book, is a very basic concept and does not address removing interest in changes to the observed subject or special logic to be performed by the observed subject before or after notifying the observers. The pattern also does not deal with recording change notifications or guaranteeing ...
SAP HANA Information Modeling (also known as SAP HANA Data Modeling) is a part of HANA application development. Modeling is the methodology to expose operational data to the end user. Reusable virtual objects (named calculation views) are used in the modelling process.
Inbox and outbox pattern "Queue-Based Load Leveling", also known as the "Storage First Pattern", is an architectural pattern in which a queue acts as a buffer between an invoker service (such as an API Gateway) and the destination (e.g., compute resources). [4] "Backends for frontends" pattern [5] "Public versus Published Interfaces" [6]
From these events the monitoring system may infer a complex event: a wedding. CEP as a technique helps discover complex events by analyzing and correlating other events: [5] the bells, the man and woman in wedding attire and the rice flying through the air. CEP relies on a number of techniques, [6] including: Event-pattern detection; Event ...
System conversion - This is a complete conversion of an existing SAP Business Suite system to SAP S/4HANA ("brownfield"): Customers who want to change their current SAP ERP system to SAP S/4HANA. This scenario is technically based on Software Update Manager (SUM) with Database Migration Option (DMO) in case the customer is not yet on SAP HANA ...
Event sourcing is an architectural pattern in which entities track their internal state not by means of direct serialization or object-relational mapping, but by reading and committing events to an event store. When event sourcing is combined with CQRS and domain-driven design, aggregate roots are responsible for validating and applying ...
The process path is represented as a compound symbol composed of a function symbol superimposed upon an event symbol. To employ the process path symbol in an Event-driven Process Chain diagram, a symbol is connected to the process path symbol, indicating that the process diagrammed incorporates the entirety of a second process which, for ...