Featured Articles

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

One String Value Crashed Asia's Biggest Streaming Site β€” We Found It with OpenResty XRay

One String Value Crashed Asia's Biggest Streaming Site β€” We Found It with OpenResty XRay

Binary Evidence-Driven Vulnerability Scanning: Eliminating False Positives with OpenResty XRay
security
...
vulnerability openresty-xray cve
9 mins read

Binary Evidence-Driven Vulnerability Scanning: Eliminating False Positives with OpenResty XRay

Binary Evidence-Driven Vulnerability Scanning: Eliminating False Positives with OpenResty XRay

Introduction to OpenResty XRay
openresty-xray
...
nginx
6 mins read

Introduction to OpenResty XRay

Introduction to OpenResty XRay

Anatomy of a 15x Performance Drop: A 90k to 6k QPS Root Cause Analysis with OpenResty XRay
openresty-xray
...
casestudy lua nginx off-cpu
3 mins read

Anatomy of a 15x Performance Drop: A 90k to 6k QPS Root Cause Analysis with OpenResty XRay

Anatomy of a 15x Performance Drop: A 90k to 6k QPS Root Cause Analysis with OpenResty XRay

Building a Non-Invasive Java Function Profiler with OpenResty XRay
openresty-xray
...
java probe
4 mins read

Building a Non-Invasive Java Function Profiler with OpenResty XRay

Building a Non-Invasive Java Function Profiler with OpenResty XRay

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

The Wonderland of Dynamic Tracing (Part 1 of 3)

The Wonderland of Dynamic Tracing (Part 1 of 3)

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
...
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

OpenResty XRay reduce your CPU usage up to  90%
OpenResty XRay reduce your CPU usage up to 90%
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Latest Articles

OpenResety Edge Jun 17, 2025

OpenResety Edge Updated Jun 17, 2025 5 mins read

Configuring sticky cookies in OpenResty Edge gateways

tutorial openresty-edge cookie
  • Introduction to Sticky Cookie in OpenResty Edge
  • Enable Sticky Cookie for the sample application
  • Test
  • Disable Sticky Cookie
  • Test
  • Introduction to Sticky Cookie in OpenResty Edge
  • Enable Sticky Cookie for the sample application
  • Test
  • Disable Sticky Cookie
  • Test

OpenResty XRay Jun 17, 2025

OpenResty XRay Updated Jun 17, 2025 6 mins read

How to deploy the on-premises version of OpenResty XRay on Microsoft's Azure cloud

tutorial openresty-xray azure
  • Create a subscription and a resource group
  • Create the Azure Kubernetes service
  • Prepare the environment variables
  • Log in to Azure from the command line
  • Create the namespace and secret for Kubernetes
  • Create the Azure Disk
  • Update the configuration file for the persistent volume
  • Update the Kubernetes configuration file
  • Create the persistent volume
  • Deploy the Kubernetes service
  • Configure the application gateway
  • Create a subscription and a resource group
  • Create the Azure Kubernetes service
  • Prepare the environment variables
  • Log in to Azure from the command line
  • Create the namespace and secret for Kubernetes
  • Create the Azure Disk
  • Update the configuration file for the persistent volume
  • Update the Kubernetes configuration file
  • Create the persistent volume
  • Deploy the Kubernetes service
  • Configure the application gateway

OpenResety Edge Jun 17, 2025

OpenResety Edge Updated Jun 17, 2025 5 mins read

High-Performance Web Application Firewall (WAF) in OpenResty Edge

tutorial openresty-edge authentication waf
  • Enable WAF for applications
  • Test the WAF settings of applications
  • Disable and re-enable WAF
  • WAF whitelist
  • Change the block action after a WAF hit
  • Test the new block action
  • Create WAF rule set
  • The implementation of WAF in OpenResty Edge
  • Enable WAF for applications
  • Test the WAF settings of applications
  • Disable and re-enable WAF
  • WAF whitelist
  • Change the block action after a WAF hit
  • Test the new block action
  • Create WAF rule set
  • The implementation of WAF in OpenResty Edge

OpenResety Edge Jun 17, 2025

OpenResety Edge Updated Jun 17, 2025 5 mins read

The EdgeLang DSL in OpenResty Edge

tutorial openresty-edge proxy
  • Introduction to Edgelang
  • Add a page rule defined using Edgelang
  • Test
  • Modify the Edgelang definition of the page rule
  • Define WAF rules using Edgelang
  • Edgelang user manual
  • Introduction to Edgelang
  • Add a page rule defined using Edgelang
  • Test
  • Modify the Edgelang definition of the page rule
  • Define WAF rules using Edgelang
  • Edgelang user manual

OpenResty Open Source Apr 21, 2023

OpenResty Open Source Updated Apr 21, 2023 2 mins read

OpenResty 1.21.4.2 RC1 is out

OpenResty releases
  • Source package
  • Windows binary packages
  • Version highlights
  • Source package
  • Windows binary packages
  • Version highlights

OpenResty XRay Jun 17, 2025

OpenResty XRay Updated Jun 17, 2025 26 mins read

The Wonderland of Dynamic Tracing (Part 1 of 3)

dynamic-tracing openresty-xray
  • Dynamic Tracing
  • What It Is
  • Too Good to be True?
  • How it Works
  • Still Having Doubts?
  • The Advantages of Dynamic Tracing
  • DTrace
  • SystemTap
  • DTrace and SystemTap
  • Applications of SystemTap in Production
Photo by Philip Brown
  • Dynamic Tracing
  • What It Is
  • Too Good to be True?
  • How it Works
  • Still Having Doubts?
  • The Advantages of Dynamic Tracing
  • DTrace
  • SystemTap
  • DTrace and SystemTap
  • Applications of SystemTap in Production

OpenResty XRay Jun 17, 2025

OpenResty XRay Updated Jun 17, 2025 7 mins read

The Wonderland of Dynamic Tracing (Part 3 of 3)

dynamic-tracing openresty-xray
  • Dynamic Tracing Support in Linux Kernels
  • Hardware Tracing
  • Analyze Remains of Dead Process
  • Traditional Debugging Technologies
  • A Messy World of Debugging
  • OpenResty XRay
Photo by L N
  • Dynamic Tracing Support in Linux Kernels
  • Hardware Tracing
  • Analyze Remains of Dead Process
  • Traditional Debugging Technologies
  • A Messy World of Debugging
  • OpenResty XRay

OpenResty XRay Feb 7, 2023

OpenResty XRay Updated Feb 7, 2023 1 min read

New FAQ Doc for OpenResty XRay

openresty-xray faq
We recently prepared a new FAQ document for OpenResty XRay
Photo by Yichun Zhang
We recently prepared a new FAQ document for OpenResty XRay

OpenResty XRay Apr 6, 2026

OpenResty XRay Updated Apr 6, 2026 8 mins read

One String Value Crashed Asia's Biggest Streaming Site β€” We Found It with OpenResty XRay

dynamic-tracing openresty-xray bilibili
  • The Platform Behind Hundreds of Millions of Streams
  • When Rebooting Doesn’t Help
  • Finding the Root Cause Without Touching a Single Line of Code
  • One Type Mismatch, Entire System Down
Photo by Yichun Zhang
  • The Platform Behind Hundreds of Millions of Streams
  • When Rebooting Doesn’t Help
  • Finding the Root Cause Without Touching a Single Line of Code
  • One Type Mismatch, Entire System Down
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