Application Insights 请求速率限制超出 - 排查请求来源

Absolutely, you can track down where those excessive requests are coming from right through the Azure Portal or using a few other handy methods. Let me walk you through the most straightforward ways:

1. 使用日志查询（Logs） #

• Head to your Application Insights resource in the Azure Portal, then find the Logs option in the left-hand menu.
• Run this Kusto query to group request counts by key source dimensions—this will show you exactly which clients, endpoints, or components are sending the most traffic:

requests
| where timestamp >= ago(24h)
| summarize RequestCount = count() by client_IP, url, operation_Name, cloud_RoleName
| sort by RequestCount desc

• You can tweak the query to add more relevant dimensions too—like user_AuthenticatedId to check specific user traffic, or custom fields from customDimensions if you’ve added any to your telemetry.

2. 使用Metrics Explorer可视化流量 #

• Go to the Metrics section of your Application Insights resource.
• Select the Requests metric, then add a split dimension (e.g., Client IP, Request Name, or Cloud Role Name).
• Set the time range to the past 24 hours, and you’ll get a clear visual breakdown of which segment is driving the excessive request volume that hit the rate limit.

3. 检查智能检测（Smart Detection） #

• Look for the Smart Detection option in the left menu. This feature automatically flags abnormal traffic spikes, and will often highlight the source of the issue along with actionable suggestions to investigate further.

额外实用方法 #

• If you’re running a distributed application, use the Application Map to visualize request flow between services. This can help you spot if one specific component is sending an unusually high number of telemetry requests.
• For command-line fans, you can use Azure CLI to run log queries directly:

az monitor log-analytics query --workspace <your-workspace-id> --analytics-query "requests | where timestamp >= ago(24h) | summarize count() by client_IP | sort by count_ desc"

内容的提问来源于stack exchange，提问作者IIIIIIIIIIIIIIIIIIIII