Bakändssystem

Bakändssystem is a term used in Swedish information technology to describe the backend system of a software application. It refers to the server-side components responsible for data management, business logic, and integration with other systems. The bakändssystem operates behind the user interface and provides services to frontend applications, mobile apps, or other clients through APIs.

Core components typically found in a bakändssystem include data storage (databases), application logic and services, an interface layer for external communication (such as REST, GraphQL, or other protocols), authentication and authorization, data modeling and migrations, as well as cross-cutting concerns like caching, message queues, and logging. Additional concerns include monitoring, auditing, and data governance.

Architectural patterns for bakändssystem range from monolithic backends to distributed approaches such as microservices, service-oriented architectures, and serverless designs. The choice influences deployment, scalability, fault isolation, and development workflow. Data management strategies may emphasize normalization, denormalization, and consistency models appropriate for distributed systems.

Operational and design considerations emphasize scalability, reliability, security, and performance. Key practices include observable logging and metrics, automated testing, continuous delivery, and infrastructure as code. Nonfunctional requirements like latency, availability, and data integrity guide decisions about data storage, caching strategies, and inter-service communication.

In practice, bakändssystem is a regional term used to describe the backend layer of a software stack. It is often contrasted with frontend development and client-side components. While not a formal standard, the concept helps teams discuss responsibilities, interfaces, and architecture related to server-side processing, data persistence, and system integrations.