Featured Articles

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

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

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

Binary Vulnerability Scanning: Catch Backported Patches, Cut False Positives
security
...
vulnerability openresty-xray cve
10 mins read

Binary Vulnerability Scanning: Catch Backported Patches, Cut False Positives

Binary Vulnerability Scanning: Catch Backported Patches, Cut False Positives

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

Non-Invasive Java Profiler: Capture Method Arguments in Production Without a Java Agent
openresty-xray
...
java probe
4 mins read

Non-Invasive Java Profiler: Capture Method Arguments in Production Without a Java Agent

Non-Invasive Java Profiler: Capture Method Arguments in Production Without a Java Agent

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
13 mins read

Nginx Memory Usage Explained: Where the RAM Actually Goes

Nginx Memory Usage Explained: Where the RAM Actually Goes

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OpenResty XRay Jul 7, 2026

OpenResty XRay Updated Jul 7, 2026 16 mins read

LuaJIT GC64 Mode: Removing the 2GB Memory Limit

luajit openresty memory openresty-xray
  • The Old Memory Limit
    • When Hitting The Memory Limit
    • The Memory Limit Is Per Process
    • GC-Managed Memory
    • Memory Allocated Outside GC
    • Extending The x64 Mode to The 4 GB Limit
  • The New GC64 Mode
    • How to Enable The GC64 Mode
    • Performance Impact
    • Debugging and Profiling Tool Chains
  • The Old Memory Limit
    • When Hitting The Memory Limit
    • The Memory Limit Is Per Process
    • GC-Managed Memory
    • Memory Allocated Outside GC
    • Extending The x64 Mode to The 4 GB Limit
  • The New GC64 Mode
    • How to Enable The GC64 Mode
    • Performance Impact
    • Debugging and Profiling Tool Chains
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