2023-08-14: Strange robotic activity pattern of haproxy 5xx api_rate_limit responses over the past week
Customer Impact
No known customer impact.
Current Status
During the past 5-7 days of my on-call rotation week, I've noticed some strange robotic activity patterns of 5xx haproxy api_rate_limit responses.
Source: grafana
These patterns are remarkable in their abruptnes. They start and stop like a light switch.
These patterns are also differentiated from normal organic user traffic patterns by their lack of correlation with normal site activity patterns, as seen in the second graph of the first figure above.
I'd like to try to find the source of these requests, and find out who is being rate limited.
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📚 References and helpful links
Recent Events (available internally only):
- Feature Flag Log - Chatops to toggle Feature Flags Documentation
- Infrastructure Configurations
- GCP Events (e.g. host failure)
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