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--- springframework:webflux [2019/01/15 11:19]
kwon37xi
+++ springframework:webflux [2021/09/07 09:00] (현재)
kwon37xi [Servlet과의 성능 차이]
@@ 줄 4: / 줄 4: @@
   * [[https://docs.spring.io/spring/docs/current/spring-framework-reference/web-reactive.html|Web on Reactive Stack]]
   * [[springframework:webclient|WebClient]]
+  * [[springframework:springboot:test|SpringBoot Test]]
+===== Servlet과의 성능 차이 =====
+  * [[https://blog.devgenius.io/is-spring-webflux-a-myth-4526c2f92413|Is Spring WebFlux a Myth?. Does it really outperform Spring… | by Gavin Fong | Aug, 2021 | Dev Genius]]
+  * 응답속도가 매우 좋은 환경에서는 servlet보다 느릴 경우도 존재할 수 있지만, 고 부하에 응답속도 편차가 큰 일반적인 환경에서는 WebFlux/non-blocking의 성능이 압도적으로 좋고 실패율도 낮다.
 ===== SpringBoot WebFlux Customize =====
@@ 줄 16: / 줄 22: @@
   * [[https://blog.newrelic.com/product-news/newrelic-announces-support-spring5-webflux/|NewRelic 이 spring webflux 지원]]
   * [[https://github.com/scouter-project/scouter/releases/tag/v2.5.0|Scouter 2.5.0 부터 Spring Reactor 지원]]
+===== Routes =====
+  * 라우터를 여러개 생성해도 자동으로 모두 모아서 설정해준다.
+  * 단, 각 **라우터 Bean의 이름은 모두 달라야 한다.**
 ===== 참고 =====
@@ 줄 23: / 줄 33: @@
   * [[http://www.java-allandsundry.com/2018/12/reactive-spring-webflux-with-aws.html|all and sundry: Reactive Spring Webflux with AWS DynamoDB]]
   * [[http://wiki.sys4u.co.kr/display/SOWIKI/Reactive+Programming+with+Spring+Boot|Reactive Programming with Spring Boot]]
-  * [[https://dzone.com/articles/spring-5-webflux-and-jdbc-to-block-or-not-to-block|Spring 5 WebFlux and JDBC: To Block or Not to Block - DZone Java]]
   * [[https://www.baeldung.com/spring-webflux|Guide to Spring WebFlux]]
   * [[https://thepracticaldeveloper.com/2017/11/04/full-reactive-stack-with-spring-webflux-and-angularjs/|Full Reactive Stack with Spring Boot WebFlux]]
-  * [[https://stackoverflow.com/questions/42299455/spring-webflux-and-reading-from-database|reactive programming - Spring webflux and reading from database - Stack Overflow]]
+  * [[https://inyl.github.io/programming/2018/03/10/springboot2_api.html|Spring boot2로 Reactive Webflux API 만들기 1]] ''@WebFluxTest''포함.
-  * [[https://projectreactor.io/docs/core/release/reference/#faq.wrap-blocking|Reactor 3 Reference Guide Blocking 호출을 비동기로 전환하기]]
+  * [[https://developer.okta.com/blog/2018/09/24/reactive-apis-with-spring-webflux|Build Reactive APIs with Spring WebFlux | Okta Developer]]
+  * [[https://www.baeldung.com/spring-webflux-kotlin|Spring Webflux with Kotlin | Baeldung]]
+  * [[http://hyper-cube.io/2017/11/27/spring5-with-kotlin/|Spring 5 with Kotlin · hyper-cube.io]]
+  * [[http://www.mkyong.com/spring-boot/spring-boot-webflux-server-sent-events-example/|Spring Boot WebFlux + Server-sent events example – Mkyong.com]]
+  * [[https://www.baeldung.com/spring-webflux-errors|Handling Errors in Spring WebFlux | Baeldung]]
+  * [[https://blog.softwaremill.com/spring-webflux-and-domain-exceptions-10ae2096b159|Spring Webflux and domain exceptions – SoftwareMill Tech Blog]]
+  * [[https://dzone.com/articles/exception-handling-in-spring-boot-webflux-reactive|Exception Handling in Spring Boot WebFlux Reactive REST Web Services - DZone Integration]]
+  * [[https://www.baeldung.com/spring-webflux-concurrency?utm_medium=feed|Concurrency in Spring WebFlux | Baeldung]]
+  * [[https://www.youtube.com/watch?v=I0zMm6wIbRI|내가 만든 WebFlux가 느렸던 이유]]
+    * blocking 호출을 map 에서 수행해서 -> flatMap
+    * ''map'' 남발. ''map''을 사용할 때마다 새로운 객체 생성 -> Memory 증가
+    * ''log()'' 남발. log appender 를 non-blocking 으로 변경할 것. ''AsyncAppender'' 만으로는 안된다.
+    * Test code에 BlockHound 사용해서 blocking call 탐지
+    * blocking 이 꼭 필요하면 ''subscribeOn()'', ''publishOn()'' 사용
+  * [[https://www.baeldung.com/spring-webflux-static-content|Static Content in Spring WebFlux | Baeldung]]

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