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OpenResty XRay Jul 10, 2025

OpenResty XRay Updated Jul 10, 2025 10 mins read

How OpenResty XRay Thoroughly Analyzes Nginx Memory Corruption Issues

casestudy openresty-xray undo coredump memory nginx
  • A Nginx Crash Case That Kept the Operations Team Up All Night
  • How to Use OpenResty XRay to Precisely Capture the First Scene of Memory Corruption
  • How Secondary Development Accidentally Broke Nginx’s Lifecycle Management
  • A Nginx Crash Case That Kept the Operations Team Up All Night
  • How to Use OpenResty XRay to Precisely Capture the First Scene of Memory Corruption
  • How Secondary Development Accidentally Broke Nginx’s Lifecycle Management

OpenResty XRay Jun 17, 2025

OpenResty XRay Updated Jun 17, 2025 8 mins read

Real-Time Request Counting against Nginx Processes via YSQL

openresty-xray ysql nginx openresty
  • 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 Jun 17, 2025

OpenResty XRay Updated Jun 17, 2025 11 mins read

Tracing the Slowest PCRE Regular Expressions in OpenResty or Nginx Processes

openresty regexes openresty-xray dynamic-tracing nginx
  • System Environment
  • Narrowing Down the Culprit without Guessing
  • Limiting the execution overhead of PCRE
  • Non-Backtracking Regular Expression Engines
  • Lua’s Builtin Patterns
  • Tracing Applications inside Containers
  • How The Tools are Implemented
  • The Overhead of the Tools
  • System Environment
  • Narrowing Down the Culprit without Guessing
  • Limiting the execution overhead of PCRE
  • Non-Backtracking Regular Expression Engines
  • Lua’s Builtin Patterns
  • Tracing Applications inside Containers
  • How The Tools are Implemented
  • The Overhead of the Tools

OpenResty XRay Jun 17, 2025

OpenResty XRay Updated Jun 17, 2025 9 mins read

Listing Loaded Lua Modules in OpenResty or Nginx Processes

ylua openresty-xray openresty nginx lua dynamic-tracing
  • System Environment
  • Names of Loaded Lua Modules
  • 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
  • Names of Loaded Lua Modules
  • Running Directly in the Web Console
  • Tracing Applications inside Containers
  • How The Tools are Implemented
  • The Overhead of the Tools

OpenResty XRay Jun 17, 2025

OpenResty XRay Updated Jun 17, 2025 12 mins read

Analyzing the Most CPU-Consuming Requests in OpenResty or Nginx

openresty tutorial cpu nginx openresty-xray ysql
  • 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
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