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Exceptions

OpenResty XRay Apr 1, 2024

OpenResty XRay Updated Apr 1, 2024 5 mins read

How to Trace Exceptions inside Perl Applications (using OpenResty XRay)

How to detect and analyze exceptions inside Perl applications
Automatic analysis and reports
What is OpenResty XRay

How to detect and analyze exceptions inside Perl applications
Automatic analysis and reports
What is OpenResty XRay

OpenResty XRay Feb 19, 2024

OpenResty XRay Updated Feb 19, 2024 5 mins read

How to Locate Exceptions inside Go Applications (using OpenResty XRay)

How to detect and analyze exceptions inside live Go applications
Automatic analysis and reports
What is OpenResty XRay

How to detect and analyze exceptions inside live Go applications
Automatic analysis and reports
What is OpenResty XRay

OpenResty XRay Jan 22, 2024

OpenResty XRay Updated Jan 22, 2024 4 mins read

How to Locate Exceptions inside Rust Applications (using OpenResty XRay)

How to detect and analyze exceptions inside live Rust applications
Automatic analysis and reports
What is OpenResty XRay

How to detect and analyze exceptions inside live Rust applications
Automatic analysis and reports
What is OpenResty XRay

OpenResty XRay Aug 28, 2023

OpenResty XRay Updated Aug 28, 2023 5 mins read

How we solved a CPU bottleneck caused by Lua exceptions in a custom Kong plugin (using OpenResty XRay)

The problem: high CPU usage in Kong servers
The analysis & report
The result: improved performance and reduced CPU usage

The problem: high CPU usage in Kong servers
The analysis & report
The result: improved performance and reduced CPU usage

OpenResty XRay Jan 14, 2023

Automatic Analysis Reports in OpenResty XRay

The Past
The Present
The Future

OpenResty XRay Nov 12, 2021

Ylang: Universal Language for eBPF, Stap+, GDB, and More (Part 1 of 4)

What is Dynamic Tracing
Why the “Y” Name
Getting Started
Various Backends and Runtimes
Why a Unified Frontend Language
The Language Syntax

OpenResty XRay Aug 31, 2020

Introduction to Lua-Land CPU Flame Graphs

What is a Flame Graph
Simple Lua samples
Complicated Lua applications
Sampling overhead
Safety
Compatibility
Other types of Lua-land Flame Graphs

OpenResty XRay Aug 10, 2020

Memory Fragmentation in OpenResty and Nginx's Shared Memory Zones

An empty zone
Filling entries of similar sizes
Deleting odd-numbered keys
Deleting the keys in the first half
Mitigating Fragmentation

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

How OpenResty and Nginx Allocate and Manage Memory

On The System Level
On The Application Level
For Traditional Nginx Servers

OpenResety Edge Apr 28, 2024

How to Use Gateway Partitions in OpenResty Edge

Create a new partition
Create a new application in the new partition
Create a new page rule
Test the new partition
What is OpenResty Edge

OpenResety Edge Apr 10, 2024

Accurately Restore the Real Client IP Address in OpenResty Edge

Set “Trusted hosts to set real IP” and “Real IP from” Globally
Configure the Application to Output the Client Address
Check the Client Address Received on OpenResty Edge
What is OpenResty Edge

OpenResty XRay Apr 4, 2024

Use C++ to Dynamic-Trace C++ Applications

Setting Up the Target C++ Program
Crafting the C++ (or Y++) Analyzer
Operationalizing the Target and Analyzer
Advancing Support for Complex C++ Applications
About the Debug Symbols

OpenResty XRay Apr 1, 2024

Pinpointing the hottest Erlang code paths with high CPU usage (using OpenResty XRay)

Problem: high CPU usage
Spot the CPU-hottest Erlang code paths
Automatic analysis and reports
What is OpenResty XRay

OpenResty XRay Mar 30, 2024

How to Trace Exceptions inside Perl Applications (using OpenResty XRay)

How to detect and analyze exceptions inside Perl applications
Automatic analysis and reports
What is OpenResty XRay

OpenResty Blog

OpenResty's Official Blog for Technologies & Products

How to Trace Exceptions inside Perl Applications (using OpenResty XRay)

How to Locate Exceptions inside Go Applications (using OpenResty XRay)

How to Locate Exceptions inside Rust Applications (using OpenResty XRay)

How we solved a CPU bottleneck caused by Lua exceptions in a custom Kong plugin (using OpenResty XRay)

Automatic Analysis Reports in OpenResty XRay

Ylang: Universal Language for eBPF, Stap+, GDB, and More (Part 1 of 4)

Introduction to Lua-Land CPU Flame Graphs

Memory Fragmentation in OpenResty and Nginx's Shared Memory Zones

How OpenResty and Nginx Shared Memory Zones Consume RAM

How OpenResty and Nginx Allocate and Manage Memory

How to Use Gateway Partitions in OpenResty Edge

Accurately Restore the Real Client IP Address in OpenResty Edge

Use C++ to Dynamic-Trace C++ Applications

Pinpointing the hottest Erlang code paths with high CPU usage (using OpenResty XRay)

How to Trace Exceptions inside Perl Applications (using OpenResty XRay)

How to Trace Exceptions inside Perl Applications (using OpenResty XRay)

How to Locate Exceptions inside Go Applications (using OpenResty XRay)

How to Locate Exceptions inside Rust Applications (using OpenResty XRay)

How we solved a CPU bottleneck caused by Lua exceptions in a custom Kong plugin (using OpenResty XRay)

Automatic Analysis Reports in OpenResty XRay

Ylang: Universal Language for eBPF, Stap+, GDB, and More (Part 1 of 4)

Introduction to Lua-Land CPU Flame Graphs

Memory Fragmentation in OpenResty and Nginx's Shared Memory Zones

How OpenResty and Nginx Shared Memory Zones Consume RAM

How OpenResty and Nginx Allocate and Manage Memory

How to Use Gateway Partitions in OpenResty Edge

Accurately Restore the Real Client IP Address in OpenResty Edge

Use C++ to Dynamic-Trace C++ Applications

Pinpointing the hottest Erlang code paths with high CPU usage (using OpenResty XRay)

How to Trace Exceptions inside Perl Applications (using OpenResty XRay)

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