Serverless APIs, the Good, the Bad and the Ugly (2019-09-19)
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This document outlines Paco de la Cruz's presentation on serverless APIs. The presentation covers an introduction to serverless computing and functions as a service (FaaS), major serverless platforms like AWS Lambda, Azure Functions, and Google Cloud Functions, use cases for serverless, benefits and downsides, strategies for mitigating cold starts, and demos of building serverless applications on Azure Functions.
Serverless APIs, the Good, the Bad and the Ugly (2019-09-19)
- 1. @pacodelacruz Paco de la Cruz Deloitte Platform Engineering Serverless APIs The Good, the Bad and the Ugly @pacodelacruz API days 2019 : Melbourne
- 3. @pacodelacruz What’s Serverless Main Players Use Cases The Good, the Bad, and the Ugly Demos Key Takeaways Q & A Agenda
- 8. @pacodelacruz We Won’t Cover Today Serverless Containers / CaaS FaaS on K8s / Container Orchestrators
- 9. @pacodelacruz Serverless Compute and its Benefits Server abstraction Focus on value Load balancing & High availability built-in
- 10. @pacodelacruz Serverless Compute and its Benefits Pay only for what you use Server abstraction Focus on value Event-driven scaling not resource-driven Load balancing & High availability built-in
- 11. @pacodelacruz Serverless FaaS in a Nutshell Event Triggers Code Outputs React and get inputs from http request and services Code Send results to different services / protocols
- 12. @pacodelacruz Serverless FaaS – Main Players AWS Lambda Azure Functions Google Cloud Functions
- 13. @pacodelacruz Language Support Java 8 Go 1.x PowerShell Node.js 8.10 & 10 C# (.NET Core 1.0, 2.1) Python 2.7, 3.6, 3.7 Ruby code 2.5 Runtime API (extend) C# Node.js 8 & 10 F# Java 8 Python 3.6 PowerShell (Preview) Typescript Node.js 8 & 10 Python 3.7 Go 1.11
- 14. @pacodelacruz Triggers (not an exhaustive list) Sync Http API / Webhooks, Alexa, Kinesis, Lex, etc. Async S3, SNS, SES, CloudWatch, CodeCommit, etc. Sync Http API / Webhooks Async Event Grid, Blob, Cosmos DB, Event Hubs, Queue Storage, Service Bus, Timer, Graph Events Sync Http API / Webhooks Async Cloud Storage, Cloud Pub/Sub, Firebase, Stackdriver Logging
- 15. @pacodelacruz Use Cases APIs for SPAs APIs for Web Apps Mobile App Back Ends IoT Back Ends Integration Pub/Sub Services Event Stream Processing Data Processing MapReduce IT and Ops Automation CRON Jobs Chatbots
- 16. @pacodelacruz Speed-to-Market Focus on Business Value (Devs & Ops) Cost (with Sporadic Loads) Event-Based Scaling (Ideal for Bursty Loads) Tooling, Local Dev & Portable Runtime Event Triggers (More than just Http) The Good
- 17. @pacodelacruz Vendor Lock-in Limited Programming Languages Opinionated Programming Models Timeouts Still Maturing Constant Changes The Bad
- 18. @pacodelacruz Cold Starts The Ugly Server Allocation Function Deployment Loaded into Memory Code Execution
- 19. @pacodelacruz Cold Starts *, ** The Ugly Server Allocation Function Deployment Loaded into Memory Code Execution * Only impacts interactive sync requests ** There are some mitigation strategies
- 20. @pacodelacruz Sync & Low Latency Constant Load Portability Full-Control of Infrastructure Language Lack of Support Limitations of Programming Model Sync & Low Latency Workloads Constant Load Portability Full-Control of Infrastructure Language Lack-of-Support Limitations of Programming Models When Not to Use Serverless
- 22. @pacodelacruz Quick Introduction to Azure Functions Programming Models (Bindings) Development and Monitoring Tooling Demo 1 github.com/pacodelacruz/ serverless-intro-azure-functions
- 23. @pacodelacruz Building a Serverless Request Bin Memory cache across instances Strategy to mitigate cold-starts Dependency Injection Deployment to Azure Demo 2 github.com/pacodelacruz/ serverless-request-bin-azure-functions
- 24. @pacodelacruz Productivity (Prog. Models, Devs & Ops Tools) Ideal for Bursty or Async Short-lived Loads Specific Use Cases (More than just Http) Enterprise-Grade for Certain Scenarios Evolving Rapidly, Still Maturing Know the Capabilities of your Cloud Provider Key Takeaways
- 26. @pacodelacruz :)