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OpenResty XRay Jul 22, 2023

OpenResty XRay Updated Jul 22, 2023 8 mins read

Real-Time Request Counting against Nginx Processes via YSQL

  • How to install the run-ysql tool
  • Count total requests served in real time
  • Filter out specific requests
  • Using YSQL in the Web Console
  • True non-invasive tracing
Photo by Yichun Zhang
  • How to install the run-ysql tool
  • Count total requests served in real time
  • Filter out specific requests
  • Using YSQL in the Web Console
  • True non-invasive tracing

OpenResty XRay Apr 10, 2024

OpenResty XRay Updated Apr 10, 2024 12 mins read

Analyzing the Most CPU-Consuming Requests in OpenResty or Nginx

  • System Environment
  • CPU-Hottest Request Hostnames
  • CPU-Hottest Request URIs
  • Digging Deeper
  • Running Directly in the Web Console
  • Tracing Applications inside Containers
  • How The Tools are Implemented
  • The Overhead of the Tools
Photo by Yichun Zhang
  • System Environment
  • CPU-Hottest Request Hostnames
  • CPU-Hottest Request URIs
  • Digging Deeper
  • Running Directly in the Web Console
  • Tracing Applications inside Containers
  • How The Tools are Implemented
  • The Overhead of the Tools
xray request demo
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OpenResty XRay Jan 14, 2023

OpenResty XRay Jan 14, 2023

Automatic Analysis Reports in OpenResty XRay
Photo by Yichun Zhang
  • The Past
  • The Present
  • The Future

OpenResty XRay Nov 12, 2021

OpenResty XRay Nov 12, 2021

Ylang: Universal Language for eBPF, Stap+, GDB, and More (Part 1 of 4)
Photo by Yichun Zhang
  • What is Dynamic Tracing
  • Why the “Y” Name
  • Getting Started
  • Various Backends and Runtimes
  • Why a Unified Frontend Language
  • The Language Syntax

OpenResty XRay Aug 31, 2020

OpenResty XRay Aug 31, 2020

Introduction to Lua-Land CPU Flame Graphs
Photo by Guido Jansen
  • What is a Flame Graph
  • Simple Lua samples
  • Complicated Lua applications
  • Sampling overhead
  • Safety
  • Compatibility
  • Other types of Lua-land Flame Graphs

OpenResty XRay Aug 10, 2020

OpenResty XRay Aug 10, 2020

Memory Fragmentation in OpenResty and Nginx's Shared Memory Zones
Photo by Elena Mozhvilo
  • An empty zone
  • Filling entries of similar sizes
  • Deleting odd-numbered keys
  • Deleting the keys in the first half
  • Mitigating Fragmentation

OpenResty XRay Aug 4, 2020

OpenResty XRay Aug 4, 2020

How OpenResty and Nginx Shared Memory Zones Consume RAM
Photo by Jose G. Ortega Castro
  • Slabs and pages
  • What is allocated is not what is paid for
  • Fake Memory Leaks
  • HUP reload

OpenResty XRay Jan 21, 2020

OpenResty XRay Jan 21, 2020

How OpenResty and Nginx Allocate and Manage Memory
Photo by Harrison Broadbent
  • On The System Level
  • On The Application Level
  • For Traditional Nginx Servers
Latest Articles

OpenResty XRay Apr 18, 2025

OpenResty XRay Apr 18, 2025

OpenResty XRay Empowers LLVM clang Performance Optimization Practices
OpenResty XRay Empowers LLVM clang Performance Optimization Practices
  • What is LLVM/clang
  • OpenResty XRay Analysis Process
  • Optimization Implementation and Results
  • Conclusion

OpenResty XRay Apr 17, 2025

OpenResty XRay Apr 17, 2025

Self-Optimization: The Performance Evolution of OpenResty XRay
Self-Optimization: The Performance Evolution of OpenResty XRay
  • Challenges and Pain Points
  • OpenResty XRay’s Self-Analysis Process
  • Remarkable Optimization Results
  • Technical Insights and Business Value
  • Conclusion

OpenResty XRay Apr 7, 2025

OpenResty XRay Apr 7, 2025

OpenResty XRay Helps Boost Script Performance by 44 Times
OpenResty XRay Helps Boost Script Performance by 44 Times
  • From Bottleneck Discovery to Significant Speed Improvement
  • How OpenResty XRay Works
  • Comparison with Traditional Methods

OpenResty XRay Apr 3, 2025

OpenResty XRay Apr 3, 2025

Cross-Media Data Structure Drift: OpenResty XRay Enables 20x Performance Improvement
Cross-Media Data Structure Drift: OpenResty XRay Enables 20x Performance Improvement
  • Performance Challenges and Breakthroughs
  • Practical Significance of 20x Performance Improvement
  • Future Outlook

OpenResty XRay Apr 2, 2025

OpenResty XRay Apr 2, 2025

From OOM to O(1): The Implementation Path of Streaming JSON Parser
From OOM to O(1): The Implementation Path of Streaming JSON Parser
  • Differences between JSONL format and traditional JSON
  • Solution
  • Continuous optimization
  • Technical insights
  • verification
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