'Server-side on Swift' by Volodymyr Shevchenko

This talk was made for CocoaHeads Kyiv #13 which took place Dec 16 2017.

Transcript

1. Server-side on Swift by Volodymyr Shevchenko
2. What for? - We will do mobile better - Can’t build App on our own - Backend is a black-box with API
3. Why Swift? ??
4. Why Swift? - we know Swift - we can reuse some code - Swift is faster
5. Kitura Perfect Vapor Zewo What do we have:
6. ⭐ GitHub Req/sec Looks Good? Kitura 6K 2.1K No Perfect 12.3K 4.2K Yes Vapor 11.6K 3.2K Yes Zewo 1.7K 1.7K No Benchmarks of the Top Server-Side Swift frameworks
7. Vapor Perfect
8. Let’s build something
9. Pet Store - Authorization - Domain CRUD - REST API
10. Check Local Credentials Create new User Check FB Credentials Create Session Object Success? Facebook Database Cache Yes No ERROR response TOKEN response
11. Success? Database Cache Yes Proceed with request 401 response Fetch session from Cache Fetch session from DB Success? No No Yes
12. User Pet Order Tag Category Domain relations *
13. Our stack: - Perfect as a framework - Mongo DB as storage - StORM as ORM
14. Few words from Cap…
15. Leaks are evil
17. Crashes are evil
18. ! Force unwrap is evil
19. Cocoapods Carthage SPM
20. XCode just an editor
21. ≠
22. - this won’t compile on Linux: - after fix:
23. Foundation is NOT ported for 100% https://github.com/apple/swift-corelibs-foundation/blob/master/Docs/Status.md … …
24. ≠ (curl + libssl) (curl + openssl)
25. [“a”, “b”, ”c”] -> “a, b, c” Bugs in MongoDBStORM
26. [“a”, “b”, ”c”] -> “a, b, c” - Work without ORM - Switch to an other DB - Switch to Vapor + Fluent - Fix bug
27. Nested objects are MongoDBStORM not supported
28. ¯\_(ツ)_/¯
29. Lets Deploy
30. Where?
31. Where? - Amazon EC2 - Microsoft Azure - Google Cloud - Digital Ocean - Linode - Alibaba cloud - IBM cloud - Packet - Vultr - …
32. Where? - Amazon EC2 - Microsoft Azure - Google Cloud - Digital Ocean - Linode - Alibaba cloud - IBM cloud - Packet - Vultr - …
33. How to deploy?
34. Perfect Assistant
35. Perfect Assistant
36. Docker
37. Plain
38. 2) Connect to remote machine via SSH 3) Install all required tools and libs 4) Setup Database server 5) Clone sources from Git repo 6) Compile 7) Configure firewall to allow http(s) traffic 8) Run executable 1) Create remote virtual machine on selected provider Plain Deploy
39. Performance - apib tool - Latency (MIN, MAX, AVG) - Requests/second
40. Performance req/sec Lat, min Lat, max Lat, avg Healthcheck 26.8K 0.6 42 7.4 Empty Auth 739 9 643 269 Auth + Read 407 10.1 952 487 Auth + Write 389 9.4 1028 511
41. Scale - Vertical - Horizontal
42. Database is Server Database Server API Server Network
43. Scaled infrastructure Database Server API Server II API Server I API Server III Load Balancer
44. 0 500 1000 1500 2000 Empty Auth Auth + read Auth + write Requests per second
45. 0 150 300 450 600 Empty Auth Auth + read Auth + write Average latency, ms
46. Cluster Performance req/sec Lat, min Lat, max Lat, avg Healthcheck 21.1K 1.4 1105 9.4 Empty Auth 1820 4.7 473 109 Auth + Read 897 3.1 243 55.6 Auth + Write 916 13 617 217.5
47. Questions?
48. Thanks!