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| <label class="md-nav__title" for="__nav_4_6"> |
| <span class="md-nav__icon md-icon"></span> |
| Invoke control |
| </label> |
| <ul class="md-nav__list" data-md-scrollfix> |
| |
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| |
| <li class="md-nav__item"> |
| <a href="../../build-consumer/flow-control/" class="md-nav__link"> |
| |
| |
| <span class="md-ellipsis"> |
| Flow Control |
| </span> |
| |
| |
| </a> |
| </li> |
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| <li class="md-nav__item"> |
| <a href="../../build-consumer/fault-injection/" class="md-nav__link"> |
| |
| |
| <span class="md-ellipsis"> |
| Fault Injection |
| </span> |
| |
| |
| </a> |
| </li> |
| |
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| |
| </ul> |
| </nav> |
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| </li> |
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| <li class="md-nav__item"> |
| <a href="../../build-consumer/3rd-party-service-invoke/" class="md-nav__link"> |
| |
| |
| <span class="md-ellipsis"> |
| Invoke 3rd-party REST services |
| </span> |
| |
| |
| </a> |
| </li> |
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| </ul> |
| </nav> |
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| </li> |
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| <li class="md-nav__item md-nav__item--nested"> |
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| <input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_5" > |
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| <label class="md-nav__link" for="__nav_5" id="__nav_5_label" tabindex="0"> |
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| |
| <span class="md-ellipsis"> |
| Transports |
| </span> |
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| <span class="md-nav__icon md-icon"></span> |
| </label> |
| |
| <nav class="md-nav" data-md-level="1" aria-labelledby="__nav_5_label" aria-expanded="false"> |
| <label class="md-nav__title" for="__nav_5"> |
| <span class="md-nav__icon md-icon"></span> |
| Transports |
| </label> |
| <ul class="md-nav__list" data-md-scrollfix> |
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| <li class="md-nav__item"> |
| <a href="../../transports/rest-over-servlet/" class="md-nav__link"> |
| |
| |
| <span class="md-ellipsis"> |
| REST over Servlet |
| </span> |
| |
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| </a> |
| </li> |
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| <li class="md-nav__item"> |
| <a href="../../transports/rest-over-vertx/" class="md-nav__link"> |
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| <span class="md-ellipsis"> |
| REST over Vertx |
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| |
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| </a> |
| </li> |
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| <li class="md-nav__item"> |
| <a href="../../transports/highway-rpc/" class="md-nav__link"> |
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| <span class="md-ellipsis"> |
| Highway |
| </span> |
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| </a> |
| </li> |
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| <li class="md-nav__item"> |
| <a href="../../transports/http2/" class="md-nav__link"> |
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| <span class="md-ellipsis"> |
| HTTP2 |
| </span> |
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| |
| </a> |
| </li> |
| |
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| |
| |
| </ul> |
| </nav> |
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| </li> |
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| <li class="md-nav__item md-nav__item--active md-nav__item--nested"> |
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| <input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_6" checked> |
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| <label class="md-nav__link" for="__nav_6" id="__nav_6_label" tabindex="0"> |
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| <span class="md-ellipsis"> |
| General Development |
| </span> |
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| <span class="md-nav__icon md-icon"></span> |
| </label> |
| |
| <nav class="md-nav" data-md-level="1" aria-labelledby="__nav_6_label" aria-expanded="true"> |
| <label class="md-nav__title" for="__nav_6"> |
| <span class="md-nav__icon md-icon"></span> |
| General Development |
| </label> |
| <ul class="md-nav__list" data-md-scrollfix> |
| |
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| |
| <li class="md-nav__item"> |
| <a href="../visit-sc/" class="md-nav__link"> |
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| <span class="md-ellipsis"> |
| Access Service Center |
| </span> |
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| </a> |
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| <li class="md-nav__item"> |
| <a href="../metrics/" class="md-nav__link"> |
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| <span class="md-ellipsis"> |
| Metrics |
| </span> |
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| <li class="md-nav__item"> |
| <a href="../microservice-invocation-chain/" class="md-nav__link"> |
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| <span class="md-ellipsis"> |
| Microservice invocation chain |
| </span> |
| |
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| </a> |
| </li> |
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| <li class="md-nav__item"> |
| <a href="../customized-tracing/" class="md-nav__link"> |
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| <span class="md-ellipsis"> |
| Customized-Tracing |
| </span> |
| |
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| </a> |
| </li> |
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| <li class="md-nav__item"> |
| <a href="../local-develop-test/" class="md-nav__link"> |
| |
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| <span class="md-ellipsis"> |
| Local development and testing |
| </span> |
| |
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| </a> |
| </li> |
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| <li class="md-nav__item"> |
| <a href="../http-filter/" class="md-nav__link"> |
| |
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| <span class="md-ellipsis"> |
| Http Filter |
| </span> |
| |
| |
| </a> |
| </li> |
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| <li class="md-nav__item"> |
| <a href="../file-upload/" class="md-nav__link"> |
| |
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| <span class="md-ellipsis"> |
| File Uploading |
| </span> |
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| </a> |
| </li> |
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| <li class="md-nav__item"> |
| <a href="../file-download/" class="md-nav__link"> |
| |
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| <span class="md-ellipsis"> |
| File Downloading |
| </span> |
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| |
| </a> |
| </li> |
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| <li class="md-nav__item"> |
| <a href="../reactive/" class="md-nav__link"> |
| |
| |
| <span class="md-ellipsis"> |
| Reactive Programing |
| </span> |
| |
| |
| </a> |
| </li> |
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| <li class="md-nav__item md-nav__item--active"> |
| |
| <input class="md-nav__toggle md-toggle" type="checkbox" id="__toc"> |
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| <label class="md-nav__link md-nav__link--active" for="__toc"> |
| |
| |
| <span class="md-ellipsis"> |
| DNS Custom Configuration |
| </span> |
| |
| |
| <span class="md-nav__icon md-icon"></span> |
| </label> |
| |
| <a href="./" class="md-nav__link md-nav__link--active"> |
| |
| |
| <span class="md-ellipsis"> |
| DNS Custom Configuration |
| </span> |
| |
| |
| </a> |
| |
| |
| |
| <nav class="md-nav md-nav--secondary" aria-label="Table of contents"> |
| |
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| |
| <label class="md-nav__title" for="__toc"> |
| <span class="md-nav__icon md-icon"></span> |
| Table of contents |
| </label> |
| <ul class="md-nav__list" data-md-component="toc" data-md-scrollfix> |
| |
| <li class="md-nav__item"> |
| <a href="#scenario" class="md-nav__link"> |
| <span class="md-ellipsis"> |
| Scenario |
| </span> |
| </a> |
| |
| </li> |
| |
| <li class="md-nav__item"> |
| <a href="#dns-configuration" class="md-nav__link"> |
| <span class="md-ellipsis"> |
| DNS Configuration |
| </span> |
| </a> |
| |
| </li> |
| |
| <li class="md-nav__item"> |
| <a href="#example" class="md-nav__link"> |
| <span class="md-ellipsis"> |
| example |
| </span> |
| </a> |
| |
| </li> |
| |
| </ul> |
| |
| </nav> |
| |
| </li> |
| |
| |
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| <li class="md-nav__item"> |
| <a href="../dai-li-she-zhi/" class="md-nav__link"> |
| |
| |
| <span class="md-ellipsis"> |
| Proxy Settings |
| </span> |
| |
| |
| </a> |
| </li> |
| |
| |
| |
| |
| |
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| |
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| |
| <li class="md-nav__item"> |
| <a href="../report-framework-version/" class="md-nav__link"> |
| |
| |
| <span class="md-ellipsis"> |
| Report framework version |
| </span> |
| |
| |
| </a> |
| </li> |
| |
| |
| |
| |
| |
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| |
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| |
| <li class="md-nav__item"> |
| <a href="../cross-app-invocation/" class="md-nav__link"> |
| |
| |
| <span class="md-ellipsis"> |
| Cross-application invocation |
| </span> |
| |
| |
| </a> |
| </li> |
| |
| |
| |
| |
| |
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| |
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| |
| <li class="md-nav__item"> |
| <a href="../secret-field/" class="md-nav__link"> |
| |
| |
| <span class="md-ellipsis"> |
| Customized serialization and deserialization |
| </span> |
| |
| |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
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| |
| <li class="md-nav__item"> |
| <a href="../context/" class="md-nav__link"> |
| |
| |
| <span class="md-ellipsis"> |
| Using Context to pass control messages |
| </span> |
| |
| |
| </a> |
| </li> |
| |
| |
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| |
| |
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| |
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| |
| <li class="md-nav__item"> |
| <a href="../produceprocess/" class="md-nav__link"> |
| |
| |
| <span class="md-ellipsis"> |
| Return value serialization extension |
| </span> |
| |
| |
| </a> |
| </li> |
| |
| |
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| |
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| |
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| |
| <li class="md-nav__item"> |
| <a href="../CORS/" class="md-nav__link"> |
| |
| |
| <span class="md-ellipsis"> |
| CORS mechanism |
| </span> |
| |
| |
| </a> |
| </li> |
| |
| |
| |
| |
| |
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| |
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| |
| <li class="md-nav__item"> |
| <a href="../AlarmEvent/" class="md-nav__link"> |
| |
| |
| <span class="md-ellipsis"> |
| Get fuse and instance isolation alarm event information |
| </span> |
| |
| |
| </a> |
| </li> |
| |
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| |
| |
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| <li class="md-nav__item"> |
| <a href="../shutdown/" class="md-nav__link"> |
| |
| |
| <span class="md-ellipsis"> |
| Shutdown gracefully |
| </span> |
| |
| |
| </a> |
| </li> |
| |
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| |
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| <li class="md-nav__item"> |
| <a href="../error-handling/" class="md-nav__link"> |
| |
| |
| <span class="md-ellipsis"> |
| Handling exceptions |
| </span> |
| |
| |
| </a> |
| </li> |
| |
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| <li class="md-nav__item"> |
| <a href="../multienvironment/" class="md-nav__link"> |
| |
| |
| <span class="md-ellipsis"> |
| Multi-environment isolation between microservice instances |
| </span> |
| |
| |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
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| |
| <li class="md-nav__item"> |
| <a href="../thread-model/" class="md-nav__link"> |
| |
| |
| <span class="md-ellipsis"> |
| Thread Model |
| </span> |
| |
| |
| </a> |
| </li> |
| |
| |
| |
| |
| </ul> |
| </nav> |
| |
| </li> |
| |
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| <li class="md-nav__item md-nav__item--nested"> |
| |
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| <input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_7" > |
| |
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| <label class="md-nav__link" for="__nav_7" id="__nav_7_label" tabindex="0"> |
| |
| |
| <span class="md-ellipsis"> |
| Configuration |
| </span> |
| |
| |
| <span class="md-nav__icon md-icon"></span> |
| </label> |
| |
| <nav class="md-nav" data-md-level="1" aria-labelledby="__nav_7_label" aria-expanded="false"> |
| <label class="md-nav__title" for="__nav_7"> |
| <span class="md-nav__icon md-icon"></span> |
| Configuration |
| </label> |
| <ul class="md-nav__list" data-md-scrollfix> |
| |
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| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../../config/general-config/" class="md-nav__link"> |
| |
| |
| <span class="md-ellipsis"> |
| General config |
| </span> |
| |
| |
| </a> |
| </li> |
| |
| |
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| |
| |
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| |
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| <li class="md-nav__item"> |
| <a href="../../config/inject-config/" class="md-nav__link"> |
| |
| |
| <span class="md-ellipsis"> |
| Configuration injection |
| </span> |
| |
| |
| </a> |
| </li> |
| |
| |
| |
| |
| </ul> |
| </nav> |
| |
| </li> |
| |
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| |
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| <li class="md-nav__item md-nav__item--nested"> |
| |
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| <input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_8" > |
| |
| |
| <label class="md-nav__link" for="__nav_8" id="__nav_8_label" tabindex="0"> |
| |
| |
| <span class="md-ellipsis"> |
| Service Capability Open |
| </span> |
| |
| |
| <span class="md-nav__icon md-icon"></span> |
| </label> |
| |
| <nav class="md-nav" data-md-level="1" aria-labelledby="__nav_8_label" aria-expanded="false"> |
| <label class="md-nav__title" for="__nav_8"> |
| <span class="md-nav__icon md-icon"></span> |
| Service Capability Open |
| </label> |
| <ul class="md-nav__list" data-md-scrollfix> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../../edge/open-service/" class="md-nav__link"> |
| |
| |
| <span class="md-ellipsis"> |
| Intruductions |
| </span> |
| |
| |
| </a> |
| </li> |
| |
| |
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| |
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| <li class="md-nav__item"> |
| <a href="../../edge/by-servicecomb-sdk/" class="md-nav__link"> |
| |
| |
| <span class="md-ellipsis"> |
| Using Edge Service |
| </span> |
| |
| |
| </a> |
| </li> |
| |
| |
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| |
| |
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| |
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| <li class="md-nav__item"> |
| <a href="../../edge/nginx/" class="md-nav__link"> |
| |
| |
| <span class="md-ellipsis"> |
| Using confd and Nginx as edge services |
| </span> |
| |
| |
| </a> |
| </li> |
| |
| |
| |
| |
| |
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| |
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| |
| <li class="md-nav__item"> |
| <a href="../../edge/zuul/" class="md-nav__link"> |
| |
| |
| <span class="md-ellipsis"> |
| Use zuul as edge services |
| </span> |
| |
| |
| </a> |
| </li> |
| |
| |
| |
| |
| </ul> |
| </nav> |
| |
| </li> |
| |
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| <li class="md-nav__item md-nav__item--nested"> |
| |
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| <input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_9" > |
| |
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| <label class="md-nav__link" for="__nav_9" id="__nav_9_label" tabindex="0"> |
| |
| |
| <span class="md-ellipsis"> |
| Service Packing and Running |
| </span> |
| |
| |
| <span class="md-nav__icon md-icon"></span> |
| </label> |
| |
| <nav class="md-nav" data-md-level="1" aria-labelledby="__nav_9_label" aria-expanded="false"> |
| <label class="md-nav__title" for="__nav_9"> |
| <span class="md-nav__icon md-icon"></span> |
| Service Packing and Running |
| </label> |
| <ul class="md-nav__list" data-md-scrollfix> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../../packaging/standalone/" class="md-nav__link"> |
| |
| |
| <span class="md-ellipsis"> |
| Standalone mode |
| </span> |
| |
| |
| </a> |
| </li> |
| |
| |
| |
| |
| |
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| |
| |
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| <li class="md-nav__item"> |
| <a href="../../packaging/web-container/" class="md-nav__link"> |
| |
| |
| <span class="md-ellipsis"> |
| WEB container mode |
| </span> |
| |
| |
| </a> |
| </li> |
| |
| |
| |
| |
| </ul> |
| </nav> |
| |
| </li> |
| |
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| <li class="md-nav__item md-nav__item--nested"> |
| |
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| <input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_10" > |
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| <label class="md-nav__link" for="__nav_10" id="__nav_10_label" tabindex="0"> |
| |
| |
| <span class="md-ellipsis"> |
| Micro Service Security |
| </span> |
| |
| |
| <span class="md-nav__icon md-icon"></span> |
| </label> |
| |
| <nav class="md-nav" data-md-level="1" aria-labelledby="__nav_10_label" aria-expanded="false"> |
| <label class="md-nav__title" for="__nav_10"> |
| <span class="md-nav__icon md-icon"></span> |
| Micro Service Security |
| </label> |
| <ul class="md-nav__list" data-md-scrollfix> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../../security/tls/" class="md-nav__link"> |
| |
| |
| <span class="md-ellipsis"> |
| Using TLS |
| </span> |
| |
| |
| </a> |
| </li> |
| |
| |
| |
| |
| |
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| |
| |
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| <li class="md-nav__item"> |
| <a href="../../security/rsa/" class="md-nav__link"> |
| |
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| <h1>DNS Custom Configuration</h1> |
| |
| <h2 id="scenario">Scenario</h2> |
| <p>When a user uses a domain name to connect to a public cloud or a third-party system, you need to use the domain name resolution DNS system. The DNS used in different systems and different frameworks may be different. Therefore, it is necessary to provide a unified configuration entry so that development and operation personnel can customize the DNS resolution mechanism without being completely subject to system configuration.</p> |
| <h2 id="dns-configuration">DNS Configuration</h2> |
| <p>The DNS configuration item is written in the microservice.yaml file. It supports the unified development of certificates. It can also add tags for more fine-grained configuration. The tag configuration overrides the global configuration. The configuration format is as follows:</p> |
| <pre><code>addressResolver.[tag].[property] |
| </code></pre> |
| <p>The common tags are as follows:</p> |
| <table> |
| <thead> |
| <tr> |
| <th style="text-align: left;">Project</th> |
| <th style="text-align: left;">tag</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td style="text-align: left;">Service Center</td> |
| <td style="text-align: left;">sc.consumer</td> |
| </tr> |
| <tr> |
| <td style="text-align: left;">Configuration Center</td> |
| <td style="text-align: left;">cc.consumer</td> |
| </tr> |
| <tr> |
| <td style="text-align: left;">User Defined</td> |
| <td style="text-align: left;">self.tag</td> |
| </tr> |
| </tbody> |
| </table> |
| <p>The detailed description of each property (Set Vertx DNS resolution)</p> |
| <pre><code class="language-yaml">addressResolver: |
| servers: 8.8.8.8, 8.8.4.4 #corresponds to the nameserver of Linux /etc/resolv.conf, the DNS server address, supports multiple configurations, separated by commas |
| ndots: 1 # corresponds to the options in linux /etc/resolv.conf: ndots, the role is that if the number of points contained in the domain name is less than the threshold, then DNS resolution will be added by default to the value of searchDomains. This must be used in conjunction with searchDomains. |
| searchDomains: a, b, c # Corresponding to the search in linux /etc/resolv.conf, and ndots, if the number of points in the current domain name is less than the set value, these values will be added to the domain name and parsed together when parsing, for example, the ndots is set to 4. The current domain name is servicecomb.cn-north-1.myhwclouds.com, only three points. Then the servicecomb.cn-north-1.myhwclouds.com.a will be automatically parsed when parsing, not parsed out. Servicecomb.cn-north-1.myhwclouds.com.b until it can be finally parsed |
| optResourceEnabled: true #optional record is automatically included in DNS queries |
| cacheMinTimeToLive: 0 #minimum cache time |
| cacheMaxTimeToLive: 10000 #Maximum cache time |
| cacheNegativeTimeToLive: 0 #DNS resolving failure time after the next retry |
| queryTimeout: 5000 #Query timeout |
| maxQueries: 4 #Query times |
| rdFlag: true #Set DNS recursive query |
| rotateServers: true #Set whether to support polling |
| </code></pre> |
| <h2 id="example">example</h2> |
| <pre><code class="language-java">VertxOptions vertxOptions = new VertxOptions(); |
| vertxOptions.setAddressResolverOptions(AddressResolverConfig.getAddressResover("self.tag")); |
| Vertx vertx = VertxUtils.getOrCreateVertxByName("registry", vertxOptions); |
| // this has to set the client options |
| HttpClientOptions httpClientOptions = createHttpClientOptions(); |
| ClientPoolManager<HttpClientWithContext> clientMgr = new ClientPoolManager<>(vertx, new HttpClientPoolFactory(httpClientOptions)); |
| clientMgr.findThreadBindClientPool().runOnContext(httpClient -> { |
| // do some http request |
| }); |
| </code></pre> |
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