wnrhd10821572

<p>docker compose 파일은 github에 올라가지 못해서 여기에 남깁니다.</p>
<pre style="background-color: #2b2b2b; color: #a9b7c6; font-family: 'JetBrains Mono',monospace; font-size: 11.3pt;"><span style="color: #cc7832;">version</span>: <span style="color: #6a8759;">'2'<br /></span><span style="color: #cc7832;">services</span>:<br />  <span style="color: #cc7832;">zookeeper</span>:<br />    <span style="color: #cc7832;">image</span>: wurstmeister/zookeeper<br />    <span style="color: #cc7832;">ports</span>:<br />      - <span style="color: #6a8759;">"2181:2181"<br /></span><span style="color: #6a8759;">    </span><span style="color: #cc7832;">networks</span>:<br />      <span style="color: #cc7832;">my-network</span>:<br />        <span style="color: #cc7832;">ipv4_address</span>: 172.18.0.100<br />  <span style="color: #cc7832;">kafka</span>:<br />    <span style="color: #629755; font-style: italic;"># build: .<br /></span><span style="color: #629755; font-style: italic;">    </span><span style="color: #cc7832;">image</span>: wurstmeister/kafka<br />    <span style="color: #cc7832;">ports</span>:<br />      - <span style="color: #6a8759;">"9092:9092"<br /></span><span style="color: #6a8759;">    </span><span style="color: #cc7832;">environment</span>:<br />      <span style="color: #cc7832;">KAFKA_ADVERTISED_HOST_NAME</span>: 172.18.0.101<br />      <span style="color: #cc7832;">KAFKA_CREATE_TOPICS</span>: <span style="color: #6a8759;">"test:1:1"<br /></span><span style="color: #6a8759;">      </span><span style="color: #cc7832;">KAFKA_ZOOKEEPER_CONNECT</span>: zookeeper:2181<br />    <span style="color: #cc7832;">volumes</span>:<br />      - /var/run/docker.sock:/var/run/docker.sock<br />    <span style="color: #cc7832;">depends_on</span>:<br />      - zookeeper<br />    <span style="color: #cc7832;">networks</span>:<br />      <span style="color: #cc7832;">my-network</span>:<br />        <span style="color: #cc7832;">ipv4_address</span>: 172.18.0.101<br /><span style="color: #cc7832;">networks</span>:<br />  <span style="color: #cc7832;">my-network</span>:<br />    <span style="color: #cc7832;">name</span>: ecommerce-network</pre>

안녕하세요 Orderservice 기동시 Userservice 죽는 문제 질문드립니다!

<p>정말 감사합니다.&nbsp;<span style="background-color: #ffffff; color: #24292e; font-family: 'Noto Sans KR'; font-size: 16px;">Root, Left, Right 방식으로 코딩을해주셔서 이해가 빨리되었습니다. 결국에 root rigth left도 예제를 추가하니 방향만다르지 동일한 dfs방식이더군요.ㅎㅎ node.right.rigth같은 꼬리가 추가적으로 없어서 이해가 잘 안되었었나봅니다.</span></p>
<p><span style="background-color: #ffffff; color: #24292e; font-family: 'Noto Sans KR'; font-size: 16px;">원래 의문이었던 dfs가 맞냐는 질문에도 bfs방식이 아니라 dfs방식인것도 확실히 이해하였습니다. (&nbsp;</span><span style="background-color: #ffffff; color: #24292e; font-family: 'Noto Sans KR'; font-size: 16px;">&nbsp;</span><span style="background-color: #ffffff; color: #24292e; font-family: 'Noto Sans KR'; font-size: 16px;">node.right.rigth 같은 예제 추가를 통해서)</span></p>
<p><span style="background-color: #ffffff; color: #24292e; font-family: 'Noto Sans KR'; font-size: 16px;">제가 잘 이해한 것이 맞겠죠? ㅎㅎ</span></p>

DFS 방식으로 푼 것이 맞나요?

응답지연으로 어떤 테스트를 할 수 있을까요?

<div class="question-desc-content" style="box-sizing: inherit; padding: 16px 0px 32px; border-bottom: 1px solid #e9ecef; color: #000a12; font-family: 'Noto Sans KR', -apple-system, system-ui, system-ui, 'Apple SD Gothic Neo', 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif, Oxygen, Ubuntu, Cantarell, 'Fira Sans', 'Droid Sans', Helvetica; font-size: 16px; background-color: #ffffff;">
<div class="title" data-kv="title" data-op="text" style="box-sizing: inherit; word-break: break-word; color: #212529; font-size: 18px; line-height: 1.5; margin-bottom: 20px; padding: 0px 20px;">@Loadbalanced 관련</div>
<div class="user-info" style="box-sizing: inherit; display: flex; align-items: center; justify-content: flex-start; margin: 0px 20px; padding-bottom: 16px; border-bottom: 1px solid #f8f9fa;">
<div class="info-wrapper" style="box-sizing: inherit; display: flex; align-items: center; color: #858a8d; flex-wrap: wrap;"><span class="info-cover profile-cover" style="box-sizing: inherit; font-weight: inherit; font-style: inherit; display: inline-flex; align-items: center; justify-content: center; font-size: 13px;">Junyi Song</span><span class="infd-divider" style="box-sizing: inherit; font-weight: inherit; font-style: inherit; margin: 0px 6px; width: 1px; height: 10px; background-color: #dee2e6;"></span><span class="info-cover date-cover" style="box-sizing: inherit; font-weight: inherit; font-style: inherit; display: inline-flex; align-items: center; justify-content: center; font-size: 14px;">2021.07.14 PM 12:18</span><span class="infd-divider" style="box-sizing: inherit; font-weight: inherit; font-style: inherit; margin: 0px 6px; width: 1px; height: 10px; background-color: #dee2e6;"></span><span class="info-cover recommended-cnt-cover" style="box-sizing: inherit; font-weight: inherit; font-style: inherit; display: inline-flex; align-items: center; justify-content: center; font-size: 13px;"><span class="infd-icon" style="box-sizing: inherit; font-weight: inherit; font-style: inherit; display: inline-flex; align-items: center; justify-content: center; transition: background-color 0.15s ease 0s; width: 20px; height: 20px;"><svg width="14" xmlns="http://www.w3.org/2000/svg" viewbox="0 0 14 12"><path fill="#868E96" fill-rule="evenodd" d="M12.641.82C11.143-.43 8.914-.204 7.54 1.186L7 1.729l-.538-.544C5.089-.205 2.858-.43 1.359.82-.358 2.256-.448 4.833 1.09 6.389l5.29 5.352c.342.345.897.345 1.24 0l5.29-5.352c1.54-1.556 1.45-4.133-.268-5.568z"></path></svg></span><span class="recommended-cnt" style="box-sizing: inherit; font-weight: inherit; font-style: inherit;">0</span></span></div>
<span class="is-editable" style="box-sizing: inherit; font-weight: inherit; font-style: inherit; display: flex; align-items: center; margin-left: auto;"></span></div>
<div class="body markdown-body" data-kv="body" data-op="html" style="box-sizing: border-box; text-size-adjust: 100%; color: #212529; font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji'; line-height: 1.5; overflow-wrap: break-word; min-width: 200px; max-width: 980px; margin: 0px auto; padding: 16px 20px 20px;">
<p style="box-sizing: border-box; padding: 0px; line-height: 1.5; margin: 0px !important 0px 12px 0px;">- spring-boot: v2.5.2</p>
<p style="box-sizing: border-box; margin: 0px 0px 12px; padding: 0px; line-height: 1.5;">- cloud: 2020.0.3</p>
<p style="box-sizing: border-box; margin: 0px 0px 12px; padding: 0px; line-height: 1.5;"></p>
<p style="box-sizing: border-box; margin: 0px 0px 12px; padding: 0px; line-height: 1.5;">예제처럼 따라했는데, user-service -> order-service로의 접근시에는 gateway를 통하지 않고 바로 통신합니다.<br style="box-sizing: border-box;" />유레카에서 해당 서비스 IP/PORT 아이피를 바로 얻어갑니다<br style="box-sizing: border-box;" /><br style="box-sizing: border-box;" /></p>
<p style="box-sizing: border-box; margin: 0px 0px 12px; padding: 0px; line-height: 1.5;">아래는 /user 조회시 주문 정보까지 가져올 때 gateway 로그입니니다.&nbsp;</p>
<p style="box-sizing: border-box; margin: 0px 0px 12px; padding: 0px; line-height: 1.5;">/user호출</p>
<p style="box-sizing: border-box; margin: 0px 0px 12px; padding: 0px; line-height: 1.5;">&nbsp; |- 해당 호출에서 rest로 /order 호출&nbsp;</p>
<p style="box-sizing: border-box; margin: 0px 0px 12px; padding: 0px; line-height: 1.5;">이면 gateway에서 /order 로깅이 되어야 하는데 출력이 되지 않네요.</p>
<p style="box-sizing: border-box; margin: 0px 0px 12px; padding: 0px; line-height: 1.5;"></p>
<pre class="language-html" style="box-sizing: border-box; margin-top: 12px; margin-bottom: 12px; padding: 12px; -webkit-font-smoothing: auto; font-family: Consolas, Monaco, 'Andale Mono', 'Ubuntu Mono', monospace; background: #2d2d2d; color: #cccccc; font-size: 14px; overflow: auto; overflow-wrap: normal; word-spacing: normal; word-break: normal; line-height: 1.5; tab-size: 4; hyphens: none; border-radius: 3px; text-shadow: none !important;"><code style="box-sizing: border-box; background: initial; border-radius: 3px; padding: 0px; -webkit-font-smoothing: auto; font-family: SFMono-Regular, Consolas, 'Liberation Mono', Menlo, monospace; color: currentcolor; margin: 0px; word-break: normal; border: 0px; display: inline; overflow: visible; line-height: inherit; overflow-wrap: normal;">2021-07-14 12:10:01.325  INFO 48697 --- [ctor-http-nio-3] com.socurites.cloud.filter.GlobalFilter  : Global filter: baseMessage: Spring Cloud Gateway Global Filter
2021-07-14 12:10:01.327  INFO 48697 --- [ctor-http-nio-3] com.socurites.cloud.filter.GlobalFilter  : Global Filter Start: request id -> 96706a17-38
2021-07-14 12:10:01.328  INFO 48697 --- [ctor-http-nio-3] c.s.c.filter.AuthorizationHeaderFilter   : Authorization> authorizationHeader: Bearer eyJhbGciOiJIUzUxMiJ9.eyJzdWIiOiJjYzg5N2Q3ZmQ3OTU0NjFiYmVjYjFhNjE1YTE5ZjU1OSIsImV4cCI6MTYyNjIzMzI4MH0.RIMPVoIUb8UNsrTOC4UTfmG3VXF-NdwqUlzTsNIxqjr2Fp0A50DGcmBQc6qwZ6Ucwi8-kraU9FuYCgMM_nIM2Q
2021-07-14 12:10:01.331  INFO 48697 --- [ctor-http-nio-3] c.socurites.cloud.filter.LoggingFilter   : Logging filter: baseMessage: Inner Logging Filter
2021-07-14 12:10:01.332  INFO 48697 --- [ctor-http-nio-3] c.socurites.cloud.filter.LoggingFilter   : Logging PRE Filter: request uri -> http://localhost:8080/users/cc897d7fd795461bbecb1a615a19f559
2021-07-14 12:10:01.461  INFO 48697 --- [ctor-http-nio-3] c.socurites.cloud.filter.LoggingFilter   : Logging POST Filter: response code -> 200 OK
2021-07-14 12:10:01.461  INFO 48697 --- [ctor-http-nio-3] com.socurites.cloud.filter.GlobalFilter  : Global Filter End: response code -> 200 OK
2021-07-14 12:14:07.516  INFO 48697 --- [trap-executor-0] c.n.d.s.r.aws.ConfigClusterResolver      : Resolving eureka endpoints via configuration
</code></pre>
<p style="box-sizing: border-box; margin: 0px 0px 12px; padding: 0px; line-height: 1.5;"></p>
<p style="box-sizing: border-box; margin: 0px 0px 12px; padding: 0px; line-height: 1.5;">그래서 예제처럼 @Loadbalanced를 쓰려면 uri에서 "/order-service"를 제거해야만 나옵니다.</p>
<p style="box-sizing: border-box; margin: 0px 0px 12px; padding: 0px; line-height: 1.5;"></p>
<p style="box-sizing: border-box; margin: 0px 0px 12px; padding: 0px; line-height: 1.5;">먼가 설정을 빠뜨린 것 같은데 잘 모르곘네요</p>
</div>
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<p style="box-sizing: border-box; padding: 0px; line-height: 1.5; margin: 0px !important 0px 12px 0px;">안녕하세요, 이도원입니다.&nbsp;</p>
<p style="box-sizing: border-box; margin: 0px 0px 12px; padding: 0px; line-height: 1.5;">다음과 같이 사용자의 상세 정보를 요청하게 되면,&nbsp;</p>
<p style="box-sizing: border-box; margin: 0px 0px 12px; padding: 0px; line-height: 1.5;">http://ip_address:8000/user-service/users/[user_id]</p>
<p style="box-sizing: border-box; margin: 0px 0px 12px; padding: 0px; line-height: 1.5;">ex)</p>
<p style="box-sizing: border-box; margin: 0px 0px 12px; padding: 0px; line-height: 1.5;"><img src="https://cdn.inflearn.com/public/comments/8c4af9d4-a91c-4c4d-9a7b-97f684f53145/%E1%84%89%E1%85%B3%E1%84%8F%E1%85%B3%E1%84%85%E1%85%B5%E1%86%AB%E1%84%89%E1%85%A3%E1%86%BA%202021-07-22%20%E1%84%8B%E1%85%A9%E1%84%8C%E1%85%A5%E1%86%AB%2011.08.12.png" title="스크린샷 2021-07-22 오전 11.08.12.png" width="800" height="74" alt="" style="box-sizing: initial; height: auto; max-width: 100%; display: block; border-style: none; background-color: #ffffff;" /></p>
<p style="box-sizing: border-box; margin: 0px 0px 12px; padding: 0px; line-height: 1.5;">해당 사용자가 주문한 주문 내역이 같이 보여지게 됩니다. 이때 RestTempalte에서는 order-service에 요청하기 위해서 user-service.yml 파일로 부터 다음과 같은 주소를 사용하고 있습니다.&nbsp;</p>
<div style="box-sizing: border-box; color: #d4d4d4; background-color: #1e1e1e; font-family: Menlo, Monaco, 'Courier New', monospace; font-size: 12px; line-height: 18px; white-space: pre;">
<div style="box-sizing: border-box;"><span style="box-sizing: border-box; font-weight: inherit; font-style: inherit; color: #569cd6;">order_service</span>:</div>
<div style="box-sizing: border-box;"><span style="box-sizing: border-box; font-weight: inherit; font-style: inherit; color: #569cd6;">url</span>: <span style="box-sizing: border-box; font-weight: inherit; font-style: inherit; color: #ce9178;">http://ORDER-SERVICE/order-service/%s/orders</span></div>
</div>
<p style="box-sizing: border-box; margin: 0px 0px 12px; padding: 0px; line-height: 1.5;">위에서 보시는 것처럼, EUREKA에 등록된 ORDER-SERVICE라는 애플리케이션명을 통해 직접 order service에 접속하고 있기 때문에, apigateway-service를 거치지 않고 바로 요청하게 됩니다. 만약 위 정보를 아래와 같이 apigateway를 거쳐서 접속하도록 수정한다면 apigateway-service에 해당 로그가 출력되는 것을 보실 수 있을겁니다.&nbsp;</p>
<div style="box-sizing: border-box; color: #d4d4d4; background-color: #1e1e1e; font-family: Menlo, Monaco, 'Courier New', monospace; font-size: 12px; line-height: 18px; white-space: pre;">
<div style="box-sizing: border-box;"><span style="box-sizing: border-box; font-weight: inherit; font-style: inherit; color: #569cd6;">order_service</span>:</div>
<div style="box-sizing: border-box;"><span style="box-sizing: border-box; font-weight: inherit; font-style: inherit; color: #6a9955;"># url: http://ORDER-SERVICE/order-service/%s/orders</span></div>
<div style="box-sizing: border-box;"><span style="box-sizing: border-box; font-weight: inherit; font-style: inherit; color: #569cd6;">url</span>: <span style="box-sizing: border-box; font-weight: inherit; font-style: inherit; color: #ce9178;">http://ip_address:8000/order-service/%s/orders</span></div>
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<p style="box-sizing: border-box; margin: 0px 0px 12px; padding: 0px; line-height: 1.5;"><img src="https://cdn.inflearn.com/public/comments/b39a87cf-0864-41bb-ad7c-37996337f688/%E1%84%89%E1%85%B3%E1%84%8F%E1%85%B3%E1%84%85%E1%85%B5%E1%86%AB%E1%84%89%E1%85%A3%E1%86%BA%202021-07-22%20%E1%84%8B%E1%85%A9%E1%84%8C%E1%85%A5%E1%86%AB%2011.09.34.png" title="스크린샷 2021-07-22 오전 11.09.34.png" width="800" height="91" alt="" style="box-sizing: initial; height: auto; max-width: 100%; display: block; border-style: none; background-color: #ffffff;" /></p>
<p style="box-sizing: border-box; margin: 0px 0px 12px; padding: 0px; line-height: 1.5;">위 로그는 apigateway-service에 대한 내용인데, 첫번째 request id -> c5045b2f-53는 user-service에 대한 요청이고, 두번째 request id -> 3925e9cb-1는 user-service에서 order-service를 요청한 내용입니다.</p>
<p style="box-sizing: border-box; margin: 0px 0px 12px; padding: 0px; line-height: 1.5;">추가로, 위와 같이 Eureka의 ORDER_SERVICE라는 애플리케이션명 대신 직접 ip address를 지정해서 사용하실 경우에는 user-service에서 RestTemplate 빈을 등록하실 때 @LoadBalanced 어노테이션을 넣지 말고 실행하시기 바랍니다.</p>
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@Loadbalanced 관련

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<p style="box-sizing: border-box; padding: 0px; line-height: 1.5; margin: 0px !important 0px 12px 0px;">안녕하세요. 좋은 강의 감사드립니다 :)</p>
<p style="box-sizing: border-box; margin: 0px 0px 12px; padding: 0px; line-height: 1.5;">강의 19:23초경에 엔드포인트를 /health_check로 두고 get 요청을 날리셨는데, user-service의 WebSecurity에서 권한을 막아놓은 요청아닌가요?</p>
<p style="box-sizing: border-box; margin: 0px 0px 12px; padding: 0px; line-height: 1.5;">어떻게 access denied가 발생하지 않았는지 궁금합니다.</p>
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<p style="box-sizing: border-box; padding: 0px; line-height: 1.5; margin: 0px !important 0px 12px 0px;">안녕하세요, 이도원입니다.&nbsp;</p>
<p style="box-sizing: border-box; margin: 0px 0px 12px; padding: 0px; line-height: 1.5;">user-service 애플리케이션에 직접 /health_check를 요청하는 것에 대해서는 접근 권한을 막지 않고 있습니다.&nbsp;</p>
<pre style="box-sizing: border-box; margin-top: 0px; margin-bottom: 16px; padding: 16px; -webkit-font-smoothing: auto; font-family: 'JetBrains Mono', monospace; background-color: #ffffff; color: #080808; font-size: 11.3pt; overflow: auto; overflow-wrap: normal; line-height: 1.45; border-radius: 3px;">http.authorizeRequests().antMatchers(<span style="box-sizing: border-box; font-weight: inherit; font-style: inherit; color: #067d17;">"/**"</span>)<br style="box-sizing: border-box;" />        .hasIpAddress(<span style="box-sizing: border-box; font-weight: inherit; font-style: inherit; color: #871094;">env</span>.getProperty(<span style="box-sizing: border-box; font-weight: inherit; font-style: inherit; color: #067d17;">"gateway.ip"</span>)) <span style="box-sizing: border-box; font-weight: inherit; font-style: italic; color: #8c8c8c;">// <- IP 변경<br style="box-sizing: border-box;" /></span><span style="box-sizing: border-box; font-weight: inherit; font-style: italic; color: #8c8c8c;">        </span>.and()<br style="box-sizing: border-box;" />        .addFilter(getAuthenticationFilter());</pre>
<p style="box-sizing: border-box; margin: 0px 0px 12px; padding: 0px; line-height: 1.5;">위 코드에서 보시는 것처럼, 모든 요청에 대해 IP를 체크한 다음, Filter를 적용하고 있습니다. UsernamePasswordAuthenticationFilter를 구현한 AuthenticationFilter를 통해 /login endpoint를 사용할 수 있으며,&nbsp; user-service에서는 모든 요청(/**)에 대해 AuthenticationFilter를 적용하도록 하고 있습니다. 만약 AuthenticationFilter를 적용하지 않으면, Spring Security에서 제공하는 /login을 사용하지 못해, 직접 로그인 관련된 기능을 구현하시거나, formLogin을 사용하셔야 합니다. 강의에서는 Postman으로 테스트하고 있기 때문에, 별다른 Login 폼 없이, Spring Security에서 제공하는 /login을 사용하고 있습니다.</p>
<p style="box-sizing: border-box; margin: 0px 0px 12px; padding: 0px; line-height: 1.5;">user-service에서 구현한 endpoints에 대한 액세스 가능 여부는, 로그인 후 발급 된 토큰(JWT) 정보를 Spring Cloud Gateway(apigateway)에서 확인 한 다음, 정상적인 JWT일 경우 user-service로 요청을 전달하고 있습니다.&nbsp;</p>
<p style="box-sizing: border-box; margin: 0px 0px 12px; padding: 0px; line-height: 1.5;">만약 user-service에서 직접 액세스를 제어하실려면, 다음과 같은 코드를 이용하여 확인해 보실 수 있습니다.&nbsp;</p>
<pre style="box-sizing: border-box; margin-top: 0px; margin-bottom: 16px; padding: 16px; -webkit-font-smoothing: auto; font-family: 'JetBrains Mono', monospace; background-color: #ffffff; color: #080808; font-size: 11.3pt; overflow: auto; overflow-wrap: normal; line-height: 1.45; border-radius: 3px;">http.authorizeRequests().antMatchers(<span style="box-sizing: border-box; font-weight: inherit; font-style: inherit; color: #067d17;">"/users"</span>)<br style="box-sizing: border-box;" />        .hasIpAddress(<span style="box-sizing: border-box; font-weight: inherit; font-style: inherit; color: #871094;">env</span>.getProperty(<span style="box-sizing: border-box; font-weight: inherit; font-style: inherit; color: #067d17;">"gateway.ip"</span>)) <span style="box-sizing: border-box; font-weight: inherit; font-style: italic; color: #8c8c8c;">// <- IP 변경<br style="box-sizing: border-box;" /></span><span style="box-sizing: border-box; font-weight: inherit; font-style: italic; color: #8c8c8c;">        </span>.and()<br style="box-sizing: border-box;" />        .addFilter(getAuthenticationFilter());<br style="box-sizing: border-box;" /><br style="box-sizing: border-box;" />http.authorizeRequests().anyRequest().denyAll();<br style="box-sizing: border-box;" /><br style="box-sizing: border-box;" /></pre>
<p style="box-sizing: border-box; margin: 0px 0px 12px; padding: 0px; line-height: 1.5;">- apigateway에서 호출,&nbsp;<span style="box-sizing: border-box; font-weight: inherit; font-style: inherit; color: #e03e2d;"><em style="box-sizing: border-box;"><span style="box-sizing: border-box; color: inherit; font-weight: bold;">http://[server ip]:8000/user-service/users -> OK</span></em></span></p>
<p style="box-sizing: border-box; margin: 0px 0px 12px; padding: 0px; line-height: 1.5;"><img src="https://cdn.inflearn.com/public/files/posts/cddd4859-a762-4424-8c45-ec8dd3ba7231/%E1%84%89%E1%85%B3%E1%84%8F%E1%85%B3%E1%84%85%E1%85%B5%E1%86%AB%E1%84%89%E1%85%A3%E1%86%BA%202021-05-13%20%E1%84%8B%E1%85%A9%E1%84%92%E1%85%AE%204.53.54.png" title="스크린샷 2021-05-13 오후 4.53.54.png" width="600" height="317" alt="" style="box-sizing: initial; height: auto; max-width: 100%; display: block; border-style: none; background-color: #ffffff;" /></p>
<p style="box-sizing: border-box; margin: 0px 0px 12px; padding: 0px; line-height: 1.5;">- apigateway에서 호출,&nbsp;<span style="box-sizing: border-box; font-weight: inherit; font-style: inherit; color: #e03e2d;"><em style="box-sizing: border-box;"><span style="box-sizing: border-box; color: inherit; font-weight: bold;">http://[server ip]:8000/user-service/welcome -> Fail</span></em></span></p>
<p style="box-sizing: border-box; margin: 0px 0px 12px; padding: 0px; line-height: 1.5;"><img src="https://cdn.inflearn.com/public/files/posts/895884a4-7d9d-43eb-85b7-6afdc0199a12/%E1%84%89%E1%85%B3%E1%84%8F%E1%85%B3%E1%84%85%E1%85%B5%E1%86%AB%E1%84%89%E1%85%A3%E1%86%BA%202021-05-13%20%E1%84%8B%E1%85%A9%E1%84%92%E1%85%AE%204.54.06.png" title="스크린샷 2021-05-13 오후 4.54.06.png" width="600" height="314" alt="" style="box-sizing: initial; height: auto; max-width: 100%; display: block; border-style: none; background-color: #ffffff;" /></p>
<p style="box-sizing: border-box; margin: 0px 0px 12px; padding: 0px; line-height: 1.5;">- user-service에서 호출,&nbsp;<em style="box-sizing: border-box;"><span style="box-sizing: border-box; font-weight: inherit; font-style: inherit; color: #e03e2d;"><span style="box-sizing: border-box; color: inherit; font-weight: bold;">http://[server ip]:64768/welcome -> Fail</span></span></em></p>
<p style="box-sizing: border-box; margin: 0px 0px 12px; padding: 0px; line-height: 1.5;"><img src="https://cdn.inflearn.com/public/files/posts/a6897cbb-692e-4426-ae66-f0e6c9b5d496/%E1%84%89%E1%85%B3%E1%84%8F%E1%85%B3%E1%84%85%E1%85%B5%E1%86%AB%E1%84%89%E1%85%A3%E1%86%BA%202021-05-13%20%E1%84%8B%E1%85%A9%E1%84%92%E1%85%AE%204.56.20.png" title="스크린샷 2021-05-13 오후 4.56.20.png" width="600" height="318" alt="" style="box-sizing: initial; height: auto; max-width: 100%; display: block; border-style: none; background-color: #ffffff;" /></p>
<p style="box-sizing: border-box; margin: 0px 0px 12px; padding: 0px; line-height: 1.5;">/users 요청에 대해 GET/POST, /login 처리는 가능하며, 나머지 요청에 대해서는 모두 거부하는 것을 확인해 보실 수 있을 겁니다.&nbsp;</p>
<p style="box-sizing: border-box; margin: 0px 0px 12px; padding: 0px; line-height: 1.5;">감사합니다.&nbsp;</p>
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안녕하세요! 질문있습니다.

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<div class="info-wrapper" style="box-sizing: inherit; display: flex; align-items: center; color: #858a8d; flex-wrap: wrap;"><span class="info-cover profile-cover" style="box-sizing: inherit; font-weight: inherit; font-style: inherit; display: inline-flex; align-items: center; justify-content: center; font-size: 13px;">정윤성</span><span class="infd-divider" style="box-sizing: inherit; font-weight: inherit; font-style: inherit; margin: 0px 6px; width: 1px; height: 10px; background-color: #dee2e6;"></span><span class="info-cover date-cover" style="box-sizing: inherit; font-weight: inherit; font-style: inherit; display: inline-flex; align-items: center; justify-content: center; font-size: 14px;">2021.06.10 PM 18:37</span><span class="infd-divider" style="box-sizing: inherit; font-weight: inherit; font-style: inherit; margin: 0px 6px; width: 1px; height: 10px; background-color: #dee2e6;"></span><span class="info-cover recommended-cnt-cover" style="box-sizing: inherit; font-weight: inherit; font-style: inherit; display: inline-flex; align-items: center; justify-content: center; font-size: 13px;"><span class="infd-icon" style="box-sizing: inherit; font-weight: inherit; font-style: inherit; display: inline-flex; align-items: center; justify-content: center; transition: background-color 0.15s ease 0s; width: 20px; height: 20px;"><svg width="14" xmlns="http://www.w3.org/2000/svg" viewbox="0 0 14 12"><path fill="#868E96" fill-rule="evenodd" d="M12.641.82C11.143-.43 8.914-.204 7.54 1.186L7 1.729l-.538-.544C5.089-.205 2.858-.43 1.359.82-.358 2.256-.448 4.833 1.09 6.389l5.29 5.352c.342.345.897.345 1.24 0l5.29-5.352c1.54-1.556 1.45-4.133-.268-5.568z"></path></svg></span><span class="recommended-cnt" style="box-sizing: inherit; font-weight: inherit; font-style: inherit;">0</span></span></div>
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<p style="box-sizing: border-box; padding: 0px; line-height: 1.5; margin: 0px !important 0px 12px 0px;">user-service에서 AuthenticationFilter를 거치기전 기존에 메모리나, DB에 해당 ID에대한 JWT토큰값이 존재할 경우 기존 토큰은 폐기하고 새로운 토큰값을 발급시켜 새로 로그인한 유저에게 할당해주는 방법으로 하면 괜찮을까요 ??</p>
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<p style="box-sizing: border-box; padding: 0px; line-height: 1.5; margin: 0px !important 0px 12px 0px;">안녕하세여, 이도원입니다.</p>
<p style="box-sizing: border-box; margin: 0px 0px 12px; padding: 0px; line-height: 1.5;">이전에 발급된 JWT를 폐기하고, 항상 새로 발급된 JWT만을 사용하게 하실 수도 있습니다. JWT은 기본적으로 클라이언트단에 저장되기 때문에, 적절한 LocalStorage에 저장된 JWT의 유효기간 등을 확인하여 삭제하거나 유효기간을 설정하실 수 있습니다. 그런데 스마트폰 앱에서 사용되는 몇몇 앱들은 일정 시간동안 토큰을 유지시키고, 필요시 Refresh해서 사용하는 방법을 쓰고 있습니다.&nbsp;</p>
<p style="box-sizing: border-box; margin: 0px 0px 12px; padding: 0px; line-height: 1.5;">감사합니다.&nbsp;</p>
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JWT 다중 로그인 처리 질문

<div class="question-desc-content" style="box-sizing: inherit; padding: 16px 0px 32px; border-bottom: 1px solid #e9ecef; color: #000a12; font-family: 'Noto Sans KR', -apple-system, system-ui, system-ui, 'Apple SD Gothic Neo', 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif, Oxygen, Ubuntu, Cantarell, 'Fira Sans', 'Droid Sans', Helvetica; font-size: 16px; background-color: #ffffff;">
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<div class="info-wrapper" style="box-sizing: inherit; display: flex; align-items: center; color: #858a8d; flex-wrap: wrap;"><span class="info-cover profile-cover" style="box-sizing: inherit; font-weight: inherit; font-style: inherit; display: inline-flex; align-items: center; justify-content: center; font-size: 13px;">Byunghyun Yoon</span><span class="infd-divider" style="box-sizing: inherit; font-weight: inherit; font-style: inherit; margin: 0px 6px; width: 1px; height: 10px; background-color: #dee2e6;"></span><span class="info-cover date-cover" style="box-sizing: inherit; font-weight: inherit; font-style: inherit; display: inline-flex; align-items: center; justify-content: center; font-size: 14px;">2021.05.13 AM 00:42</span><span class="infd-divider" style="box-sizing: inherit; font-weight: inherit; font-style: inherit; margin: 0px 6px; width: 1px; height: 10px; background-color: #dee2e6;"></span><span class="info-cover recommended-cnt-cover" style="box-sizing: inherit; font-weight: inherit; font-style: inherit; display: inline-flex; align-items: center; justify-content: center; font-size: 13px;"><span class="infd-icon" style="box-sizing: inherit; font-weight: inherit; font-style: inherit; display: inline-flex; align-items: center; justify-content: center; transition: background-color 0.15s ease 0s; width: 20px; height: 20px;"><svg width="14" xmlns="http://www.w3.org/2000/svg" viewbox="0 0 14 12"><path fill="#868E96" fill-rule="evenodd" d="M12.641.82C11.143-.43 8.914-.204 7.54 1.186L7 1.729l-.538-.544C5.089-.205 2.858-.43 1.359.82-.358 2.256-.448 4.833 1.09 6.389l5.29 5.352c.342.345.897.345 1.24 0l5.29-5.352c1.54-1.556 1.45-4.133-.268-5.568z"></path></svg></span><span class="recommended-cnt" style="box-sizing: inherit; font-weight: inherit; font-style: inherit;">0</span></span></div>
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<p style="box-sizing: border-box; padding: 0px; line-height: 1.5; margin: 0px !important 0px 12px 0px;">안녕하세요 수업 잘 듣고 있습니다.</p>
<p style="box-sizing: border-box; margin: 0px 0px 12px; padding: 0px; line-height: 1.5;">수업 중에 궁금한게 있어 질문 드립니다.</p>
<p style="box-sizing: border-box; margin: 0px 0px 12px; padding: 0px; line-height: 1.5;">로그인시 JWT 생성하여 응답 헤더값에 토큰과 userId를 담아 줬는데요,</p>
<p style="box-sizing: border-box; margin: 0px 0px 12px; padding: 0px; line-height: 1.5;">생각해보니 userId를 꼭 전달해야할까 싶은 의문이 생겨서요</p>
<p style="box-sizing: border-box; margin: 0px 0px 12px; padding: 0px; line-height: 1.5;">토큰을 디코딩하면 payload 부분에 userId가 있으니까&nbsp;</p>
<p style="box-sizing: border-box; margin: 0px 0px 12px; padding: 0px; line-height: 1.5;">payload userId와 시그니처 복호화 userId를 비교해도 상관없지 않나요?&nbsp;</p>
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<div class="comment-el qt-cm-el" data-id="110246" data-post_id="212109" style="box-sizing: inherit; display: flex; padding: 20px 20px 0px;"><span class="infd-icon circle profile-icon" style="box-sizing: inherit; font-weight: inherit; font-style: inherit; display: inline-flex; align-items: center; justify-content: center; transition: background-color 0.15s ease 0s; border-radius: 9999px; width: 24px; height: 24px; overflow: hidden; flex-shrink: 0; margin: 1px 8px 1px 1px;"><img src="https://cdn.inflearn.com/public/users/thumbnails/40572/0d765508-be4a-4099-9022-ae0638127da9" alt="Dowon Lee" style="box-sizing: inherit; height: auto; max-width: 100%; display: block; object-fit: cover;" /></span>
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<p style="box-sizing: border-box; padding: 0px; line-height: 1.5; margin: 0px !important 0px 12px 0px;">안녕하세요, 이도원입니다.&nbsp;</p>
<p style="box-sizing: border-box; margin: 0px 0px 12px; padding: 0px; line-height: 1.5;">말씀하신것처럼, Token에 저장 된 정보에 userId가 포함되어 있기 때문에 별도로 userId를 전달하지 않을 수도 있습니다. 그러나, 전달된 userId가 정상적인 데이터(외부로부터 위변조가 되지 않은)인지 확인한다고 가정했을 때, 해당 값과 Token에 저장된 userId값을 비교해 볼 수도 있을 것 같습니다. 그리고, Token에 저장된 데이터를 사용하기 위해서는 secret 키 필요하기 때문에, 강의에서는 2가지 방법을 다 소개 하였습니다.&nbsp;</p>
<p style="box-sizing: border-box; margin: 0px 0px 12px; padding: 0px; line-height: 1.5;">감사합니다</p>
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