• What is Function as a Service?

  • Oct 3 2024
  • Length: 2 mins
  • Podcast

What is Function as a Service?

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  • Summary

  • Function as a Service (FaaS): Core Building Block of Serverless TechnologyWhat is FaaS?
    • Simplest unit of work for building applications, microservices, or event-driven protocols
    • Basic workflow: Input → Logic → Output
    Characteristics of FaaS
    • Simple and easily understandable
    • Highly scalable
    • Quick response time
    Popular FaaS Framework: AWS Lambda
    • Can be attached to various services:
      • S3 notifications (e.g., file uploads)
      • SQS (Simple Queue Service) messages
    • Enables building infinitely scalable services with small response times
    Best Languages for Serverless/FaaS
    1. Rust
    2. Go
    Advantages of Modern Compiled Languages for FaaS
    • Speed
    • Safety
    • Optimal deployment characteristics
    • Millisecond response and invocation times
    • Low energy usage
    Key Considerations for FaaS Development
    • Focus on maintenance over ease of building
    • Optimize for low costs (financial and energy)
    • Consider total cost of service over time
    Takeaway

    When developing Function as a Service applications, prioritize long-term efficiency, maintenance, and cost-effectiveness over initial development ease. Choose languages and practices that support these goals in a serverless environment.

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