Tuesday, May 10, 2022

Pattern: Serverless deployment


How are services packaged and deployed?


  • Services are written using a variety of languages, frameworks, and framework versions
  • Each service consists of multiple service instances for throughput and availability
  • Service must be independently deployable and scalable
  • Service instances need to be isolated from one another
  • You need to be able to quickly build and deploy a service
  • You need to be able to constrain the resources (CPU and memory) consumed by a service
  • You need to monitor the behavior of each service instance
  • You want the deployment to reliable
  • You must deploy the application as cost-effectively as possible


Use a deployment infrastructure that hides any concept of servers (i.e. reserved or preallocated resources)- physical or virtual hosts, or containers. The infrastructure takes your service’s code and runs it. 

You are charged for each request based on the resources consumed.

To deploy your service using this approach, you package the code (e.g. as a ZIP file), upload it to the deployment infrastructure, and describe the desired performance characteristics.

The deployment infrastructure is a utility operated by a public cloud provider. It typically uses either containers or virtual machines to isolate the services. However, these details are hidden from you. 

Neither you nor anyone else in your organization is responsible for managing any low-level infrastructure such as operating systems, virtual machines, etc.

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