The FN Project by Maximilian Jerg
- 1. The Fn Project Lessons learnt with Serverless Maximilian Jerg Open Source Serverless Computing
- 2. Agenda ● Serverless ● Lessons learnt ● Fn project ● Live Demo
- 3. Serverless
- 4. What is Serverless? ● Serverless focuses on applications not infrastructure ● Managed service of infrastructure and its operations including provisioning, scaling, dynamic allocation of resources, patching, etc. ● Server management and capacity planning decisions are completely hidden ● Pricing is based on the resources consumed
- 5. Functions-as-a-Service ● Functions are small bits of code that do one thing well and are easy to understand and maintain ● Stateless since there is typically no shared-memory In mathematics, a function is a relation between a set of inputs and a set of permissible outputs with the property that each input is related to exactly one output. Function (mathematics) - Wikipedia https://en.wikipedia.org/wiki/Function_(mathematics)
- 6. Why Serverless? ● Easier: Just think about your code, not infrastructure ● Powerful: Transparent and limitless scaling ● Faster: Deploy faster, iterate faster, innovate faster ● Reliability: Increase reliability of critical apps using modern architectures ● Productivity: Very good for small developer teams ● Cheaper: Only pay for what you use to the 100ms (never idle)
- 8. Our use case ● Part of backend is a REST-based service ● Highly variable workloads ○ Usually 1-150 of requests a day ○ But very high traffic during a few days every year ● Data aggregation + transformation Decision for Node + Serverless
- 9. Problems ● Execution time ○ Much, much slower ○ Cold starts ○ Allocation of RAM ○ Processing power? ● Timeouts ● Lock-in ○ Strongly tied into the vendor implementation ○ Vendor standard and not industry standard
- 10. Solution ● Serverless.com ○ CLI ○ Supports all major FaaS vendors and Fn ● OpenFaaS and Fnproject ● CloudEvents / Event Gateway
- 11. Fnproject
- 12. Fn Project ● Open-source serverless compute platform ● Can be deployed to any cloud and on-premise ● Simple, elegant, and extensible by design ● Containers are primitives ● Active w/ 2500+ commits across 60+ contributors ● Independently governed with plans for foundation ● Strong enterprise focus (security, scalability, observability, etc.)
- 13. Components FDK’sFn Server Fn Flow
- 14. Fn CLI ● fn init --runtime go ● fn run ● fn test ● fn deploy --app myapp ● fn call myapp myfunc → http://localhost:8080/r/myapp/myfunc
- 15. fn deploy details 1. Builds container (multi-stage) + bumps version 2. Pushes container to registry 3. Creates/updates function route (servers lazy load images) MyFunc:0.0.2 MyFunc:0.0.2 MyFunc:0.0.2 Your code Fn Service myfunc → /r/myapp/myfunc:0.0.2 1 2 3
- 16. Architecture
- 17. Demo
- 18. What about Serverless? Traditional architecture Virtualized Architecture FaaS on Demand
- 19. Fn Flow ● Build long-running, reliable, scalable functions with rich sets of language-specific primitives including fork-join, chaining, delays and error handling ● Supports complex parallel processes that are readable and testable (including unit tests) with standard programming tools ● Java support using CompletableFuture API from Java 8 with JS, Python, Go language support on the way!
- 20. Thank you! 1. Star the project: github.com/fnproject/fn 2. Join the conversation: slack.fnproject.io 3. Learn more: fnproject.io 4. We’re hiring engineers and evangelists: chad.arimura@oracle.com Maximilian Jerg uniPortal / Oracle mx.jerg@gmail.com Get Involved
- 21. The Fn Project FDK’sFn Server Fn Flow