Serverless
Serverless is a model that allows you to build and run applications so when an event-trigger occurs, the application will automatically scale up based on incoming demand, or scale to zero after use.
OpenShift Serverless on OpenShift Container Platform enables stateless serverless workloads to all run on a single multi-cloud container platform with automated operations. Developers can use a single platform for hosting their microservices, legacy, and serverless applications.
OpenShift Serverless is based on the open source Knative project.
Knative Serving
Knative Serving on OpenShift Container Platform enables developers to write cloud-native applications using serverless architecture. These routine tasks are abstracted away by the platform, allowing developers to push code to production much faster than in traditional models.
The Knative Serving project provides middleware primitives that enable:
Rapid deployment of serverless containers
Automatic scaling up and down to zero
Routing and network programming
Point-in-time snapshots of deployed code and configurations
Knative Serving CRDs:
Service, Revision, Route, Configuration
Knative Eventing
Knative Eventing on OpenShift Container Platform enables developers to use an event-driven architecture with serverless applications. An event-driven architecture is based on the concept of decoupled relationships between event producers that create events, and event sinks, or consumers, that receive them.
Knative Eventing uses standard HTTP POST requests to send and receive events between event producers and consumers. These events conform to the CloudEvents specifications, which enables creating, parsing, sending, and receiving events in any programming language.
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