<p class="shortdesc"></p> <section><div class="tasklabel"><h2 class="doc-tairway">操作步骤</h2></div><ol class="ol steps"><li class="li step stepexpand"> <span class="ph cmd"><span class="ph" id="Degraded_fuse__d21e23">登录应用管理与运维平台。</span></span> </li><li class="li step stepexpand"> <span class="ph cmd">在左侧导航栏中，选择<span class="ph menucascade"><span class="ph uicontrol">服务治理</span><abbr> > </abbr><span class="ph uicontrol">服务治理策略</span></span>。</span> </li><li class="li step stepexpand" id="Degraded_fuse__step_imk_3v2_dsb"> <span class="ph cmd">在<span class="ph uicontrol">服务列表</span>区域，选中目标服务。</span> </li><li class="li step stepexpand"> <span class="ph cmd">在<span class="ph uicontrol">治理策略</span>区域，选择<span class="keyword wintitle">降级熔断</span>页签。</span> </li><li class="li step stepexpand"> <span class="ph cmd">单击区域右上方<span class="ph uicontrol">新增策略</span>。</span> </li><li class="li step stepexpand"> <span class="ph cmd">在<span class="ph uicontrol">新增降级策略</span>页面，填写配置信息。</span> <div class="itemgroup info"><img class="image" id="Degraded_fuse__image_uqm_x22_dsb" src="https://obs-cn-shanghai.fincloud.pinganyun.com/pacloud/20220910180811-1b428d649faf.png"><table class="table frame-all" id="Degraded_fuse__table_p3f_bf2_dsb"><caption><span class="table--title-label">表1 </span><span class="title"></span></caption><colgroup><col style="width:26.80965147453083%"><col style="width:73.19034852546918%"></colgroup><thead class="thead"> <tr class="row"> <th class="entry colsep-1 rowsep-1" id="Degraded_fuse__table_p3f_bf2_dsb__entry__1">配置项</th> <th class="entry colsep-1 rowsep-1" id="Degraded_fuse__table_p3f_bf2_dsb__entry__2">说明</th> </tr> </thead><tbody class="tbody"> <tr class="row"> <td class="entry colsep-1 rowsep-1" headers="Degraded_fuse__table_p3f_bf2_dsb__entry__1 "> <p class="p">资源名</p> </td> <td class="entry colsep-1 rowsep-1" headers="Degraded_fuse__table_p3f_bf2_dsb__entry__2 "> <p class="p">资源名，即规则的作用对象。</p> </td> </tr> <tr class="row"> <td class="entry colsep-1 rowsep-1" headers="Degraded_fuse__table_p3f_bf2_dsb__entry__1 "> <p class="p">降级策略</p> </td> <td class="entry colsep-1 rowsep-1" headers="Degraded_fuse__table_p3f_bf2_dsb__entry__2 "> <p class="p">降级策略支持平均响应、比率和异常数。</p> <div class="p"> <ul class="ul" id="Degraded_fuse__ul_pyb_gf2_dsb"> <li class="li">平均响应：1秒内平均响应大于等于设置的rt，将产生熔断。</li> <li class="li">比率：1秒内异常比例大于等于设置的异常比例，将产生熔断。</li> <li class="li">异常数：当1分钟内的异常数目超过阈值之后会自动进行熔断。</li> </ul> </div> </td> </tr> <tr class="row"> <td class="entry colsep-1 rowsep-1" headers="Degraded_fuse__table_p3f_bf2_dsb__entry__1 "> <p class="p">平均响应/比率/异常数</p> </td> <td class="entry colsep-1 rowsep-1" headers="Degraded_fuse__table_p3f_bf2_dsb__entry__2 "> <p class="p">配置降级熔断策略的阈值。</p> </td> </tr> <tr class="row"> <td class="entry colsep-1 rowsep-1" headers="Degraded_fuse__table_p3f_bf2_dsb__entry__1 "> <p class="p">熔断时长</p> </td> <td class="entry colsep-1 rowsep-1" headers="Degraded_fuse__table_p3f_bf2_dsb__entry__2 "> <p class="p">配置熔断时长。</p> </td> </tr> </tbody></table></div> </li><li class="li step stepexpand"> <span class="ph cmd">完成后，单击<span class="ph uicontrol">确定</span>。</span> </li></ol></section>