Skalena RNC

- reengineering new components

Modernizing Legacies and converting them to the Cloud-Native world, DevOps, DevSecOps, GitOps, APIs and Microservices.

Our methodology and strategy is based on the Microservices pattern:Strangling Pattern by Chris Richardson

Migration of Application Environments Oracle, ADABAS, Sybase etc to APIs

Strangling Pattern (APIs and Microservices)

Incrementally migrate a legacy system by gradually replacing specific pieces of functionality with new services and applications. As the legacy system's resources are replaced, the new system ends up replacing all of the old system's resources, strangling the old system and allowing you to shut it down.

Context

As the system ages, the tools, hosting technology, and even the system architectures they were built upon can become increasingly obsolete.

With new features and functionalities, the complexity of these applications can considerably increase, making it harder to maintain or add new features.

Problema

Completely replacing a complex system can be an immensely daunting task. Typically, a gradual migration to a new system will be necessary, retaining the old system to handle features that have not yet been migrated. However, running two different versions of an application implies that clients need to be aware of where specific features are located. It's a delicate process that needs to be handled professionally to ensure smooth operations and customer satisfaction.

Solution

Incrementally replace specific parts of the functionality with new services and APIs. Create a facade that intercepts requests for the legacy backend system. This facade routes these requests either to the legacy application or to the new services. Existing features can be migrated to the new system gradually, and consumers can continue using the same interface, unaware that any migration has taken place.

Success Stories

Retail/E-Commerce Client

Scenario: System Developed with Delphi with Oracle

Challenge: Company acquired SAP as new ERP and Magento as E-Commerce. How to integrate with legacy data and how to efficiently expose product catalogs via REST APIs?

Solution: With our methodology, we convert Stored Procedures and packages components into REST APIS with high productivity and reuse of components throughout the production chain. For a long time, this company had all its components in production, but over time the legacy was gradually replaced.

Start of Modernization

Request traffic is still intense in the current system (legacy), but new components are starting to be created in a new 100% Cloud-Native, Hybrid-Cloud infrastructure, with full support for DevSecOps. A small part of the traffic is differentiated on the new channels through APIs that expose this legacy data and operations.