Featured Articles

Photo by Yichun Zhang
dynamic-tracing
...
openresty-xray bilibili
6 mins read

Resolving Bilibili’s major site incident with OpenResty XRay

Resolving Bilibili’s major site incident with OpenResty XRay

Photo by Yichun Zhang
openresty-xray
...
nginx lua openresty off-cpu
6 mins read

When Lua IPC Pipes Block OpenResty or Nginx's Event Loops

When Lua IPC Pipes Block OpenResty or Nginx's Event Loops

Photo by Philip Brown
dynamic-tracing
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openresty-xray
26 mins read

The Wonderland of Dynamic Tracing (Part 1 of 3)

The Wonderland of Dynamic Tracing (Part 1 of 3)

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openresty-xray
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reports
10 mins read

Automatic Analysis Reports in OpenResty XRay

Automatic Analysis Reports in OpenResty XRay

Photo by Guido Jansen
nginx
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openresty lua cpu openresty-xray dynamic-tracing
19 mins read

Introduction to Lua-Land CPU Flame Graphs

Introduction to Lua-Land CPU Flame Graphs

Photo by Elena Mozhvilo
nginx
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openresty memory openresty-xray dynamic-tracing
10 mins read

Memory Fragmentation in OpenResty and Nginx's Shared Memory Zones

Memory Fragmentation in OpenResty and Nginx's Shared Memory Zones

Photo by Jose G. Ortega Castro
nginx
...
openresty memory openresty-xray dynamic-tracing
13 mins read

How OpenResty and Nginx Shared Memory Zones Consume RAM

How OpenResty and Nginx Shared Memory Zones Consume RAM

Photo by Harrison Broadbent
nginx
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openresty memory luajit openresty-xray dynamic-tracing
11 mins read

How OpenResty and Nginx Allocate and Manage Memory

How OpenResty and Nginx Allocate and Manage Memory

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Latest Articles

OpenResty XRay Jun 17, 2025

OpenResty XRay Updated Jun 17, 2025 9 mins read

Analyzing CPU, off-CPU and Disk I/O Usage of Java Applications (Using OpenResty XRay)

openresty-xray java memory cpu
  • High CPU usage issues in Java applications
  • CPU blocking issues in Java applications
  • High disk I/O issues in Java applications
  • Supported Java versions and operating systems
  • Performance impact and overhead
  • Future plans
Photo by Yichun Zhang
  • High CPU usage issues in Java applications
  • CPU blocking issues in Java applications
  • High disk I/O issues in Java applications
  • Supported Java versions and operating systems
  • Performance impact and overhead
  • Future plans

OpenResty XRay Nov 11, 2024

OpenResty XRay Updated Nov 11, 2024 5 mins read

A Quick Tour to OpenResty XRay’s Web Console

tutorial openresty-xray web-console
  • Introduction to Insight Page
  • Comprehensive Report Details
  • Dashboard Overview
  • Use Guided Analysis Feature to Analyze Online
  • Setting and Configuration
  • What is OpenResty XRay
  • Introduction to Insight Page
  • Comprehensive Report Details
  • Dashboard Overview
  • Use Guided Analysis Feature to Analyze Online
  • Setting and Configuration
  • What is OpenResty XRay

OpenResty XRay Jun 17, 2025

OpenResty XRay Updated Jun 17, 2025 5 mins read

Install OpenResty XRay’s Agents on Kubernetes cluster

tutorial openresty-xray k8s Agent install
  • Logging in to the Console
  • Installing the Agent on Kubernetes cluster
  • Configuring and Detecting Applications
  • Initiating Analyzers and Viewing Insights
  • Install Another Agent
  • What is OpenResty XRay
  • Logging in to the Console
  • Installing the Agent on Kubernetes cluster
  • Configuring and Detecting Applications
  • Initiating Analyzers and Viewing Insights
  • Install Another Agent
  • What is OpenResty XRay

OpenResty XRay Jun 17, 2025

OpenResty XRay Updated Jun 17, 2025 7 mins read

Introduction to OpenResty XRay Mobile Apps

tutorial openresty-xray mobile app
  • Download and install OpenResty XRay for Android
  • Sign into OpenResty XRay
  • Automatic analysis report
  • View the performance chart data on the dashboard page
  • Guided analysis feature
  • What is OpenResty XRay
  • Download and install OpenResty XRay for Android
  • Sign into OpenResty XRay
  • Automatic analysis report
  • View the performance chart data on the dashboard page
  • Guided analysis feature
  • What is OpenResty XRay

OpenResty XRay Jun 17, 2025

OpenResty XRay Updated Jun 17, 2025 5 mins read

Locate Large Memory Objects inside PHP Processes (using OpenResty XRay)

tutorial openresty-xray php memory
  • Problem: high memory usage
  • Use the guided analysis feature of OpenResty XRay to find the largest Perl objects or values taking the most RAM
  • Automatic analysis and reports
  • What is OpenResty XRay
  • Problem: high memory usage
  • Use the guided analysis feature of OpenResty XRay to find the largest Perl objects or values taking the most RAM
  • Automatic analysis and reports
  • What is OpenResty XRay

OpenResety Edge Jun 17, 2025

OpenResety Edge Updated Jun 17, 2025 5 mins read

Accurately Restore the Real Client IP Address in OpenResty Edge

tutorial openresty-edge proxy real ip
  • Set “Trusted hosts to set real IP” and “Real IP from” Globally
  • Configure the Application to Output the Client Address
  • Check the Client Address Received on OpenResty Edge
  • What is OpenResty Edge
Photo by Yichun Zhang
  • Set “Trusted hosts to set real IP” and “Real IP from” Globally
  • Configure the Application to Output the Client Address
  • Check the Client Address Received on OpenResty Edge
  • What is OpenResty Edge

OpenResty XRay Jun 17, 2025

OpenResty XRay Updated Jun 17, 2025 7 mins read

Use C++ to Dynamic-Trace C++ Applications

stl c++ ebpf openresty-xray dynamic-tracing
  • Setting Up the Target C++ Program
  • Crafting the C++ (or Y++) Analyzer
  • Operationalizing the Target and Analyzer
  • Advancing Support for Complex C++ Applications
  • About the Debug Symbols
Photo by Yichun Zhang
  • Setting Up the Target C++ Program
  • Crafting the C++ (or Y++) Analyzer
  • Operationalizing the Target and Analyzer
  • Advancing Support for Complex C++ Applications
  • About the Debug Symbols

OpenResty XRay Jun 17, 2025

OpenResty XRay Updated Jun 17, 2025 4 mins read

Install OpenResty XRay’s Agents on Amazon Linux via Package Bundles

tutorial openresty-xray Amazon-linux2 Agent install
  • Logging in to the Console
  • Installing the Agent via Bundle Packages
  • Configuring and Detecting Applications
  • Initiating Analyzers and Viewing Insights
  • Install Another Agent
  • What is OpenResty XRay
  • Logging in to the Console
  • Installing the Agent via Bundle Packages
  • Configuring and Detecting Applications
  • Initiating Analyzers and Viewing Insights
  • Install Another Agent
  • What is OpenResty XRay

OpenResty XRay Jun 17, 2025

OpenResty XRay Updated Jun 17, 2025 6 mins read

Pinpointing the Hottest Go Code Paths with High Disk I/O (using OpenResty XRay)

tutorial openresty-xray go golang disk I/O
  • Problem: high disk I/O
  • Use the guidede analysis feature of OpenResty XRay to spot the problematic Go code paths
  • Automatic analysis and reports
  • What is OpenResty XRay
  • Problem: high disk I/O
  • Use the guidede analysis feature of OpenResty XRay to spot the problematic Go code paths
  • Automatic analysis and reports
  • What is OpenResty XRay
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