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OpenResty XRay Aug 24, 2026

OpenResty XRay Updated Aug 24, 2026 6 mins read

Kong Plugin High CPU Usage: A Hidden Lua Exception Traced with Flame Graphs

openresty-xray exceptions lua kong nginx cpu
  • The problem: Kong plugin high CPU usage under light traffic
  • Finding the CPU bottleneck with an OpenResty XRay flame graph
  • The result: Kong CPU usage cut from 80% to 50%
Photo by Yichun Zhang
  • The problem: Kong plugin high CPU usage under light traffic
  • Finding the CPU bottleneck with an OpenResty XRay flame graph
  • The result: Kong CPU usage cut from 80% to 50%
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