Performance · OpenResty Official Blog

Performance

OPENRESTY Jun 26, 2026

OPENRESTY Updated Jun 26, 2026 11 mins read

How OpenResty XRay Solved P99 Latency Jitter in a D-lang Order Service

d-lang flame-graph performance gc

Analyzing GC Traps and Business Hotspots in the Flame Graph
Optimization Roadmap: Why Sequence Is More Important Than Action
Conclusion: From Code Logic to Runtime Reality

Analyzing GC Traps and Business Hotspots in the Flame Graph
Optimization Roadmap: Why Sequence Is More Important Than Action
Conclusion: From Code Logic to Runtime Reality

OpenResty XRay Jul 22, 2026

OpenResty XRay Updated Jul 22, 2026 8 mins read

Java Tomcat Slow Response Time: Pinpoint the Exact Slow Request with PCAP

openresty-xray java tomcat latency performance

Diagnose Tomcat slow response time by catching the exact slow request
Selective packet capture: filter by duration, status, and path
Per-request PCAP download for one specific slow request
Tell server-side latency from network delay
Works for Spring Boot apps with embedded Tomcat

Photo by Yichun Zhang

Diagnose Tomcat slow response time by catching the exact slow request
Selective packet capture: filter by duration, status, and path
Per-request PCAP download for one specific slow request
Tell server-side latency from network delay
Works for Spring Boot apps with embedded Tomcat

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