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OpenResty XRay Apr 10, 2024

OpenResty XRay Updated Apr 10, 2024 6 mins read

Resolving Bilibili’s major site incident with OpenResty XRay

  • The incident
  • Process of resolution
  • Hardening after the incident
  • OpenResty XRay Services
Photo by Yichun Zhang
  • The incident
  • Process of resolution
  • Hardening after the incident
  • OpenResty XRay Services
xray request demo
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OpenResty XRay Jan 14, 2023

OpenResty XRay Jan 14, 2023

Automatic Analysis Reports in OpenResty XRay
Photo by Yichun Zhang
  • The Past
  • The Present
  • The Future

OpenResty XRay Nov 12, 2021

OpenResty XRay Nov 12, 2021

Ylang: Universal Language for eBPF, Stap+, GDB, and More (Part 1 of 4)
Photo by Yichun Zhang
  • 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

OpenResty XRay Aug 31, 2020

Introduction to Lua-Land CPU Flame Graphs
Photo by Guido Jansen
  • 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

OpenResty XRay Aug 10, 2020

Memory Fragmentation in OpenResty and Nginx's Shared Memory Zones
Photo by Elena Mozhvilo
  • 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

OpenResty XRay Aug 4, 2020

How OpenResty and Nginx Shared Memory Zones Consume RAM
Photo by Jose G. Ortega Castro
  • 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

How OpenResty and Nginx Allocate and Manage Memory
Photo by Harrison Broadbent
  • On The System Level
  • On The Application Level
  • For Traditional Nginx Servers
Latest Articles

OpenResety Edge Apr 10, 2024

OpenResety Edge Apr 10, 2024

Accurately Restore the Real Client IP Address in OpenResty Edge
Photo by Yichun Zhang
  • 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

OpenResty XRay Apr 4, 2024

Use C++ to Dynamic-Trace C++ Applications
Photo by Yichun Zhang
  • 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

OpenResty XRay Apr 1, 2024

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

OpenResty XRay Mar 30, 2024

How to Trace Exceptions inside Perl Applications (using OpenResty XRay)
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 XRay Mar 27, 2024

OpenResty XRay Mar 27, 2024

Analyze OpenResty/Nginx Applications without Debug Symbols (using OpenResty XRay)
Analyze OpenResty/Nginx Applications without Debug Symbols (using OpenResty XRay)
  • Problem: Debug Symbols are missing
  • Automatically Analyze and Rebuild Debug Symbols
  • Automatic analysis and reports
  • What is OpenResty XRay
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