llkasushi.blogg.se - Download mission critical examples

Cert manager: Jetstack's cert-manager is used to auto-provision SSL/TLS certificates (using Let's Encrypt) for the ingress rules.

It is exposed through Azure Load Balancer with a public IP address (but only accessed through Azure Front Door).

Ingress controller: Nginx Ingress Controller is used to route incoming requests to the workload and load balance between pods.

There are other supporting components running in the cluster: The pods are stateless and able to scale independently. There's no direct communication between the pods. The API, worker, and health check applications are referred to as workload and hosted as containers in a dedicated AKS namespace (called workload).

Health service API ( HealthService): used to report the health of the application by checking if critical components (database, messaging bus) are working.

Worker ( BackgroundProcessor): background worker, which processes write requests to the database by listening to new events on the message bus.

API ( CatalogService): REST API called by the UI application, but available for other potential client applications.

User interface (UI): single-page web application accessed by end users is hosted in Azure Storage Account's static website hosting.The workload is composed in a way that the whole AKS cluster and other dependencies in the stamp can be deleted and recreated at any time. The application uses stateless API endpoints, which decouple long-running write requests asynchronously through a messaging broker. Apply this separation at all levels on the application stack, allowing each part of the system to scale independently and meet changes in demand.Īn example of that approach is shown in the implementation. This state can be achieved through separation of components into functional units that can operate independently. Application compositionįor high-scale mission critical applications, it's essential to optimize the architecture for end-to-end scalability and resilience. This implementation can be used as a basis for further solution development in your first step towards production. The guidance is backed by a production-grade reference implementation which showcases mission critical application development on Azure.