OpenResty Official Blog

Featured Articles

Photo by Yichun Zhang

dynamic-tracing8 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

security10 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-xray6 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-xray3 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-xray4 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-tracing26 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

nginx13 mins read

How OpenResty and Nginx Shared Memory Zones Consume RAM

How OpenResty and Nginx Shared Memory Zones Consume RAM

Photo by Harrison Broadbent

nginx13 mins read

Nginx Memory Usage Explained: Where the RAM Actually Goes

Nginx Memory Usage Explained: Where the RAM Actually Goes

OpenResty XRay reduce your CPU usage up to 90%

OpenResty XRay reduce your CPU usage up to 90%

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Latest Articles

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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