APIG秒级监控

前提条件

• 已采集APIG日志，详情请参见APIG接入。
• 日志配置结构化，详情请参见结构化配置。

背景信息

APIG（API Gateway）提供高性能、高可用、高安全的API托管服务，能快速将企业服务能力包装成标准API服务，帮助您轻松构建、管理和部署任意规模的API，并上架API云商店进行售卖。借助API网关，可以简单、快速、低成本、低风险地实现内部系统集成、业务能力开放及业务能力变现。API网关帮助您变现服务能力的同时，降低企业研发投入，让您专注于企业核心业务，提升运营效率。

分析APIG监控情况

1. 登录云日志服务控制台，在左侧导航栏中选择“日志管理”。
2. 在“日志应用”模块中，单击“APIG日志中心”，选择“进入仪表盘”。
3. 单击左上角下拉框，在仪表盘模板下方，选择“APIG仪表盘模板>APIG秒级监控”仪表盘，查看图表详情。

重要图表说明

APIG秒级监控仪表盘中的重要图表说明如下所示：

• QPS图展示QPS的变化情况，所关联的查询分析语句如下所示：

  SELECT TIME_FORMAT(TIME_CEIL(__time,'PT1S'),'yyyy-MM-dd HH:mm:ss','+08:00') AS _time_ , COUNT(*) as QPS from log group by _time_

• 成功率图展示成功率的变化情况，所关联的查询分析语句如下所示：

  select __time,round(CASE WHEN "成功率" > 0 THEN "成功率" else 0 end,2) as "成功率" from (select TIME_FORMAT(TIME_CEIL(__time,'PT5S'),'yyyy-MM-dd HH:mm:ss','+08:00') as __time, sum(case when status < 400 then 1 else 0 end) * 100.0 / count(1) as '成功率' from log group by __time)

• 延迟图展示访问延时的变化情况，所关联的查询分析语句如下所示：

  select __time,round(CASE WHEN "访问延迟" > 0 THEN "访问延迟" else 0 end,2) as "访问延迟",round(CASE WHEN "Upstream延迟" > 0 THEN "Upstream延迟" else 0 end,2) as "Upstream延迟" from (select TIME_FORMAT(TIME_CEIL(__time,'PT5S'),'yyyy-MM-dd HH:mm:ss','+08:00') as __time, avg(request_time)* 1000 as '访问延迟',avg(upstream_response_time)* 1000 as 'Upstream延迟' from log group by __time)

• 流量图展示请求流量和返回body流量的变化情况，所关联的查询分析语句如下所示：

  select TIME_FORMAT(TIME_CEIL(__time,'PT5S'),'yyyy-MM-dd HH:mm:ss','+08:00') as __time , sum("request_length") as "请求流量", sum("body_bytes_sent") as "返回body流量" group by __time

• 状态码图展示响应状态码的变化情况，所关联的查询分析语句如下所示：

  select t.t as "time",      CASE WHEN a."2XX" IS NOT NULL THEN  CAST(a."2XX" AS BIGINT) ELSE 0 END as "2XX",      CASE WHEN b."3XX" IS NOT NULL THEN  CAST(b."3XX" AS BIGINT) ELSE 0 END as "3XX",      CASE WHEN c."4XX" IS NOT NULL THEN  CAST(c."4XX" AS BIGINT) ELSE 0 END as "4XX",      CASE WHEN d."5XX" IS NOT NULL THEN  CAST(d."5XX" AS BIGINT) ELSE 0 END as "5XX",      CASE WHEN e."其他" IS NOT NULL THEN  CAST(e."其他" AS BIGINT)  ELSE 0 END as "其他"      from(      select TIME_CEIL(__time,'PT5S') as t from log group by t order by t asc         ) t       left join (      select TIME_CEIL(__time,'PT5S') as t , CAST(COUNT(1) as VARCHAR) as "2XX" from log WHERE "status" >= 200 and "status" < 300 group by t order by t asc ) a        on t.t =a.t       left join (      select TIME_CEIL(__time,'PT5S') as t , CAST(COUNT(1) as VARCHAR) as "3XX" from log WHERE "status" >= 300 and "status" < 400 group by t order by t asc) b        on t.t =b.t       left join (      select TIME_CEIL(__time,'PT5S') as t , CAST(COUNT(1) as VARCHAR) as "4XX" from log WHERE "status" >= 400 and "status" < 500 group by t order by t asc) c        on t.t =c.t       left join (      select TIME_CEIL(__time,'PT5S') as t , CAST(COUNT(1) as VARCHAR) as "5XX" from log WHERE "status" >= 500 and "status" < 600 group by t order by t asc) d       on t.t =d.t       left join (      select TIME_CEIL(__time,'PT5S') as t , CAST(COUNT(1) as VARCHAR) as "其他" from log WHERE "status" < 200 or "status" >= 600 group by t order by t asc) e        on t.t =e.t

• 后端响应码图展示后端响应状态码的变化情况，所关联的查询分析语句如下所示：

  SELECT TIME_CEIL ( TIME_PARSE ( time_local, 'dd/MMM/yyyy:HH:mm:ss' ), 'PT5S' ) AS "time", SUM( CASE WHEN "upstream_status" >= 200 AND "upstream_status" < 300 THEN 1 ELSE 0 END ) AS "2XX", SUM( CASE WHEN "upstream_status" >= 300 AND "upstream_status" < 400 THEN 1 ELSE 0 END ) AS "3XX", SUM( CASE WHEN "upstream_status" >= 400 AND "upstream_status" < 500 THEN 1 ELSE 0 END ) AS "4XX", SUM( CASE WHEN "upstream_status" >= 500 AND "upstream_status" < 600 THEN 1 ELSE 0 END ) AS "5XX", SUM( CASE WHEN "upstream_status" < 200 OR "upstream_status" >= 600 THEN 1 ELSE 0 END ) AS "其他" FROM log  WHERE TIME_PARSE ( time_local, 'dd/MMM/yyyy:HH:mm:ss' ) IS NOT NULL GROUP BY "time"  ORDER BY "time" ASC LIMIT 100000