Building Serverless Swift APIs with Apache OpenWhisk

on YouTube ↗40m

" summary

Shows how to run Swift functions on Apache OpenWhisk / IBM Cloud Functions: write a single function named main (Swift 3/4), use Codable for JSON, register via the wsk CLI and invoke locally or via a web action URL or an API Gateway. Demo builds a Bitcoin conversion API that calls CoinDesk, deployed from source but recommends push Swift binary to narrow cold vs warm start latency. Platform auto-scales to zero, charges by milliseconds and memory, and enforces timeouts (~10–15 min) and low-GB memory limits.

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" chapters (18)

1. 0:00Introduction to serverless Swift
2. 1:41Why servers kill productivity
3. 4:27What is serverless computing
4. 8:42History of serverless platforms
5. 10:06Why choose Apache OpenWhisk
6. 11:29Swift support in OpenWhisk
7. 12:33Writing Swift functions for OpenWhisk
8. 15:20Setting up OpenWhisk locally
9. 16:24Hello World demo with Swift
10. 18:31Real-world Bitcoin conversion API
11. 21:19Integrating functions into mobile apps
12. 23:47Using API gateways for endpoints
13. 25:33Creating a web action endpoint
14. 27:40Building a managed API with API Gateway
15. 30:06Challenges of serverless platforms
16. 30:48Warm vs cold Swift activations
17. 35:19Compute limits in serverless
18. 38:06Summary and call to action

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