Using Kotlin for Server-side Development

Transcript

1. Using Kotlin for Server- side Development Ktor ࢎਊ೧ ௏ౣܽ ࢲߡ ٜ݅ӝ Grey
2. Advantage of Kotlin https://kotlinlang.org/docs/reference/server-overview.html
3. Type-safe Builder Delegated properties Coroutines
4. Type-safe Builder? How?
5. Type-safe Builder? Kotlin Extension https://www.slideshare.net/YongHaYoo/swift-kotlin-and-modern-languages-80109300
6. Type-safe Builder?
7. Type-safe Builder?
8. Type-safe Builder?
9. Kotlin-based DSLs Html Android(Anko) domain-specific languages
10. Kotlin-based DSLs domain-specific languages Ktor
11. Type-safe Builder Delegated properties Coroutines
12. Delegated properties?
13. Delegated properties? If someCondition fails, the variable won’t be computed at all Ex1 Ex2 //computed //Hello //Hello
14. Delegated properties? //first -> second Ex3
15. Type-safe Builder Delegated properties Coroutines
16. Coroutines? coroutines not only open the doors to asynchronous programming, but also provide a wealth of other possibilities such as concurrency, actors, etc. https://kotlinlang.org/docs/reference/coroutines-overview.html
17. Coroutines? https://kotlinlang.org/docs/reference/ coroutines/basics.html
18. Sommelier
19. What I want to make? Sommelier Qanda-Config-Managing-Application
20. What I want to make? DataScientist, Manager can dynamically control config’s condition on dashboard
21. What I want to make? os Version Locale UserId Android iOS >=2105 <2105 ==ko_KR ==ja_JP Feed_Pick_On Feed_Pick_Off Feed_Pick_On
22. What I want to make? @Deprecated(“String Constant in qanda”)
23. What I want to make? @Deprecated(“Jarvis is very inefficient”)
24. Why don’t you update jarvis instead sommelier? A. I don’t like the name of ‘jarvis’ A. I want to practice to new server deployment. A. Kotlin based server looked interesting. A. I’m not interesting on golang
25. ੉ PPT ٜ݅ दрী ѐߊਸ ೮যঠ ೮חؘ…
26. Ktor
27. Ktor https://ktor.io/
28. Quick Start embeddedServer Netty
29. Quick Start Module
30. Quick Start Routing
31. Ktor Lifecycle https://ktor.io/servers/lifecycle.html
32. Exposed Setting up Exposed Exposed is another JetBrains sponsored library for database interactions in Kotlin. It is a kind of ORM, but unlike Hibernate it’s very simple and lightweight. In this post we’re going to use H2 as a simple in-memory database and HikariCP for connection pooling. Add the following dependencies: Exposed is a prototype for a lightweight SQL library written over JDBC driver for Kotlin language. It does have two layers of database access: typesafe SQL wrapping DSL and lightweight data access objects Exposed is currently available for maven/gradle builds at https://bintray.com/kotlin/exposed/exposed/view# Kotlin SQL Library https://github.com/JetBrains/Exposed
33. Quick Start Routing
34. Conclusion Welcome to Kotlin Server Welcome to Jetbrain world ੗߄ ࢲߡܳ ௏ౣܽਵ۽ ஶߡ౴ೠ׮ݶ ݒ਋ જইਃ. Ӓր ୐ ࢲߡ۽ ௏ౣܽਵ۽ द੘ೞח Ѫ਷ Ӗ्ਃ ઇ࠳ۨੋਸ फযೠ׮ݶ ௏ౣܽ਷ Ӗ्ਃ…
35. ՘