Serverless Computing

Posted on Jul 19, 2022 DRAFT

Introduction

Serverless computing delivers true pay only for resources used with almost infinite scalability.
Customers will only focus on the business aspects of their applications. Developers do not need to to worry about low-level details of servers management and scaling, and only pay for when processing requests or events.
Definiton: Serverless computing is a platform that hides server usage from developers and runs code on-demand automatically scaled and billed only for the time the code is running.
Sometimes zero scaling is not possible, a minimum memory and CPU allocation can be required and there are ongoing costs. Like Amazon Aurora
FaaS (Function-as-a-Service) focuses on small pieces if code represented as functions to run for limited time and triggered by events or HTTP requests. It is not allowed to keep persistent state.
- Definition: Function-as-a-Service is a serverless computing platform where the unit of computation is a function that is executed in response to triggers such as events or HTTP requests.

Serverless builds upon long-running trends and advances in both distributed systems, pub/sub systems and event-driven programming models, including actor models, reactive programming, and active db systems.