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OpenResty XRay Aug 24, 2022
OpenResty XRay Aug 24, 2022
One String Value Crashed Asia's Biggest Streaming Site — We Found It with OpenResty XRay
- 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
OpenResty XRay Mar 24, 2026
OpenResty XRay Mar 24, 2026
Binary Vulnerability Scanning: Catch Backported Patches, Cut False Positives
- Why Version-Matching Vulnerability Scanning Fails: Three Compounding Costs
- How OpenResty XRay’s Binary Vulnerability Scanning Works: The Evidence-First Model
- Case Study: Binary Vulnerability Scanning on Rocky Linux with Dual OpenSSL Versions
- From Alert Fatigue to Precision: A Sustainable Vulnerability Scanning Practice
OpenResty XRay Feb 10, 2026
OpenResty XRay Feb 10, 2026
Introduction to OpenResty XRay
- Core Philosophy: A Tracing Engine Built for the Unknown
- Turning Noise into Signal: How XRay Demystifies Production Issues
- Empowering Engineering Teams in Cloud-Native Reality
- Built on a Robust, Open Technological Foundatione
- Real-World Success Stories
OpenResty XRay Dec 23, 2025
OpenResty XRay Dec 23, 2025
Nginx Reverse Proxy QPS Dropped 15x: A Missing upstream keepalive and an -O0 Debug Build
- A 15x Slower Nginx Reverse Proxy — and No Errors in the Logs
- Flame Graphs Expose a Connection Storm: The Missing upstream keepalive
- The Remaining 10% Gap: Baseline Comparison Points to the Compiler
- How an -O0 Debug Build Cost Us 10% of Performance
OpenResty XRay Oct 10, 2025
OpenResty XRay Oct 10, 2025
Non-Invasive Java Profiler: Capture Method Arguments in Production Without a Java Agent
- Why Non-Invasive Java Profiling Matters in Production
- Hands-on Demo: Capturing Java Method Arguments in Production
- How OpenResty XRay Differs from Common Java Profilers
- Frequently Asked Questions
OpenResty XRay Feb 16, 2023
OpenResty XRay Feb 16, 2023
The Wonderland of Dynamic Tracing (Part 1 of 3)
- 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 Aug 4, 2020
OpenResty XRay Aug 4, 2020
How OpenResty and Nginx Shared Memory Zones Consume RAM
- 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
Nginx Memory Usage Explained: Where the RAM Actually Goes
- How to Check Nginx Memory Usage
- On The System Level
- On The Application Level
- For Traditional Nginx Servers
- FAQ: How Much Memory Does Nginx Need?
OpenResty XRay Aug 18, 2026
OpenResty XRay Aug 18, 2026
Memory Leak Detection in Production: From RSS Curve to Source Line
- The Symptom: A Memory Curve That Only Goes Up
- Memory Leak or Just High Memory Usage?
- Four Leak Patterns with Real Root-Cause Chains
- It Looks Like a Leak, but It Isn’t
- How to Locate a Leak: Top-Down Layered Attribution
- Why Traditional Tools Fall Short in Production
- Frequently Asked Questions
OpenResty XRay Aug 14, 2026
OpenResty XRay Aug 14, 2026
Off-CPU Analysis: Four Root Causes Behind Low CPU Yet High Latency
- What Is Off-CPU Time?
- The Symptom: CPU Usage Won’t Climb, Yet Requests Are Queuing
- Four Categories of Off-CPU Root Causes with Real-World Root-Cause Chains
- How to Quantify Off-CPU Time
- On-CPU + Off-CPU = Wall-Clock Time: The Bigger Picture and the Tool Ecosystem
- FAQ
OpenResety Edge Jul 20, 2026
OpenResety Edge Jul 20, 2026
CDN for Live Streaming: Surviving Peak Events Without Peak-Event Bills
- Why live streams crash at peak: running day-to-day doesn’t mean surviving the peak
- How a private CDN turns peak stability from probability into certainty
- Live streaming CDN cost comparison: surviving the peak isn’t paying for the peak
- The real cost of a private CDN: not the same as building from scratch
- Beyond delivery: what a live streaming scenario needs from the same gateway layer
- FAQ
OpenResty XRay Jul 15, 2026
OpenResty XRay Jul 15, 2026
OpenResty XRay Version 26.7.15. Now Available
- Key Highlights
- Other Important Updates
OpenResty XRay Jul 14, 2026
OpenResty XRay Jul 14, 2026
OpenResty XRay AI Assistant: Making Every Piece of Analysis Data Speak
- How Is It Different from Pasting a Report into ChatGPT?
- Three Typical Scenarios
- FAQ: Can AI Really Read a Flame Graph? How Reliable Is It?