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OpenResty XRay Jan 19, 2026

OpenResty XRay Updated Jan 19, 2026 9 mins read

Hunting Down a Silent Memory Leak in OpenResty Without a Reboot

casestudy openresty-xray memory nginx
  • A Complete Dissection of a Production Memory Leak
  • Why Are These Problems Nearly Unsolvable?
  • A System Transformation
  • When Performance Issues Go Beyond Just Tools
  • A Complete Dissection of a Production Memory Leak
  • Why Are These Problems Nearly Unsolvable?
  • A System Transformation
  • When Performance Issues Go Beyond Just Tools

OpenResty XRay Dec 23, 2025

OpenResty XRay Updated Dec 23, 2025 3 mins read

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

openresty-xray casestudy lua nginx off-cpu
  • The 93% Performance Drop: Uncovering the Observability Blind Spot
  • OpenResty XRay Uncovers Connection Reuse Issues
  • Comparative Analysis Reveals Compilation Option Issues
  • Impact of Compiler Options on Instruction Execution Performance
  • The 93% Performance Drop: Uncovering the Observability Blind Spot
  • OpenResty XRay Uncovers Connection Reuse Issues
  • Comparative Analysis Reveals Compilation Option Issues
  • Impact of Compiler Options on Instruction Execution Performance

OpenResty Open Source Dec 17, 2025

OpenResty Open Source Updated Dec 17, 2025 5 mins read

Implementing Cluster-Wide TLS Rotation Without Restarts

nginx lua openresty TSL
  • The Hidden Fragility of TLS
  • Moving from Manual Hacks to Systemic Resilience
  • Quantifying Latency Reduction and Uptime Gains
  • The Hidden Fragility of TLS
  • Moving from Manual Hacks to Systemic Resilience
  • Quantifying Latency Reduction and Uptime Gains

OpenResty XRay Dec 2, 2025

OpenResty XRay Updated Dec 2, 2025 4 mins read

How to use OpenResty XRay to quickly pinpoint memory leaks in C++ process

case-study openresty-xray Nginx c++
  • Technical Predicament and Initial Diagnosis
  • Flame Graphs: Pinpointing Memory Leak Hotspots
  • From Reactive to Proactive: XRay’s New Approach to Troubleshooting
  • The OpenResty XRay Closed-Loop Approach
  • Technical Predicament and Initial Diagnosis
  • Flame Graphs: Pinpointing Memory Leak Hotspots
  • From Reactive to Proactive: XRay’s New Approach to Troubleshooting
  • The OpenResty XRay Closed-Loop Approach

OpenResty XRay Sep 2, 2025

OpenResty XRay Updated Sep 2, 2025 8 mins read

Application Lagging? OpenResty XRay: Instantly Uncover the Truth Behind 75ms Blockages

openresty-xray casestudy lua nginx off-cpu
  • Unraveling Performance Puzzles: CPU Resource Contention Comes to Light
  • The Real Culprit Revealed: Blocking Lua I/O Operations
  • Quantitative Analysis: The Impact of File IO Performance
  • Deep Dive: Understanding Event Loop Blocking in Nginx
  • Unraveling Performance Puzzles: CPU Resource Contention Comes to Light
  • The Real Culprit Revealed: Blocking Lua I/O Operations
  • Quantitative Analysis: The Impact of File IO Performance
  • Deep Dive: Understanding Event Loop Blocking in Nginx

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

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  • 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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