When Lua IPC Pipes Block OpenResty or Nginx's Event Loops
- The Problem
- Analyses
- Solutions
- Results
- The Problem
- Analyses
- Solutions
- Results
Featured Articles
OpenResty XRay reduce your CPU usage up to
90%
OpenResty XRay reduce your CPU usage up to 90%
Latest Articles
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
- 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
The Wonderland of Dynamic Tracing (Part 2 of 3)
- Flame Graphs
- Methodology
- Knowledge Is Power
- Open-Source and Debug Symbols
- Flame Graphs
- Methodology
- Knowledge Is Power
- Open-Source and Debug Symbols
The Wonderland of Dynamic Tracing (Part 3 of 3)
- Dynamic Tracing Support in Linux Kernels
- Hardware Tracing
- Analyze Remains of Dead Process
- Traditional Debugging Technologies
- A Messy World of Debugging
- OpenResty XRay
- Dynamic Tracing Support in Linux Kernels
- Hardware Tracing
- Analyze Remains of Dead Process
- Traditional Debugging Technologies
- A Messy World of Debugging
- OpenResty XRay
Optimize Memory Fragmentation due to Huge Nginx Configuration
- Challenges
- Analyses
- Solutions
- Results
- Challenges
- Analyses
- Solutions
- Results
New FAQ Doc for OpenResty XRay
We recently prepared a new FAQ document for OpenResty XRay
We recently prepared a new FAQ document for OpenResty XRay
Automatic Analysis Reports in OpenResty XRay
- The Past
- The Present
- The Future
- The Past
- The Present
- The Future
One String Value Crashed Asia's Biggest Streaming Site β 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
- 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
Tracing the Slowest PCRE Regular Expressions in OpenResty or Nginx Processes
- System Environment
- Narrowing Down the Culprit without Guessing
- Limiting the execution overhead of PCRE
- Non-Backtracking Regular Expression Engines
- Lua’s Builtin Patterns
- Tracing Applications inside Containers
- How The Tools are Implemented
- The Overhead of the Tools
- System Environment
- Narrowing Down the Culprit without Guessing
- Limiting the execution overhead of PCRE
- Non-Backtracking Regular Expression Engines
- Lua’s Builtin Patterns
- Tracing Applications inside Containers
- How The Tools are Implemented
- The Overhead of the Tools
Listing Loaded Lua Modules in OpenResty or Nginx Processes
- System Environment
- Names of Loaded Lua Modules
- Running Directly in the Web Console
- Tracing Applications inside Containers
- How The Tools are Implemented
- The Overhead of the Tools
- System Environment
- Names of Loaded Lua Modules
- Running Directly in the Web Console
- Tracing Applications inside Containers
- How The Tools are Implemented
- The Overhead of the Tools
Analyzing the Most CPU-Consuming Requests in OpenResty or Nginx
- System Environment
- CPU-Hottest Request Hostnames
- CPU-Hottest Request URIs
- Digging Deeper
- Running Directly in the Web Console
- Tracing Applications inside Containers
- How The Tools are Implemented
- The Overhead of the Tools
- System Environment
- CPU-Hottest Request Hostnames
- CPU-Hottest Request URIs
- Digging Deeper
- Running Directly in the Web Console
- Tracing Applications inside Containers
- How The Tools are Implemented
- The Overhead of the Tools
Configure HTTP basic auth in OpenResty Edge
- Configure the HTTP basic auth credentials for applications
- Add a basic auth user group
- Enable the basic authentication
- Test
- Configure the global HTTP basic auth
- Add a global basic auth user group
- Configure the global auth for application
- Configure the HTTP basic auth credentials for applications
- Add a basic auth user group
- Enable the basic authentication
- Test
- Configure the global HTTP basic auth
- Add a global basic auth user group
- Configure the global auth for application
How to use custom dynamic metrics in OpenResty Edge
- Introduction to dynamic metrics
- Create custom dynamic metrics for the sample application
- Test
- Introduction to dynamic metrics
- Create custom dynamic metrics for the sample application
- Test
Limit Request Rate by Custom Keys in OpenResty Edge
- Add request rate limiting page rule for the sample application
- Test
- Limit the rate of SSL handshakes
- Add request rate limiting page rule for the sample application
- Test
- Limit the rate of SSL handshakes
Ylang: Universal Language for eBPF, Stap+, GDB, and More (Part 4 of 4)
- Transparent Container Tracing
- Efficient Stack Unwinding
- Analyzing Dead Processes (Core Dumps)
- Very Low Tracing Overhead
- Standard Ylang Libraries & Tools
- Network Filtering & Control
- The Ylang Compiler’s Implementation
- Operating System Support
- Contributions to Open-Source Communities
- Transparent Container Tracing
- Efficient Stack Unwinding
- Analyzing Dead Processes (Core Dumps)
- Very Low Tracing Overhead
- Standard Ylang Libraries & Tools
- Network Filtering & Control
- The Ylang Compiler’s Implementation
- Operating System Support
- Contributions to Open-Source Communities
Ylang: Universal Language for eBPF, Stap+, GDB, and More (Part 3 of 4)
- The Language Syntax (Continued)
- String Literals
- Built-in Regex Support
- Full Control-Flow Support
- Floating-Point Number Support
- Compared to Open-Source Toolchains
- Transparent Debug Symbol Handling
- Debug Symbols: No Runtime Overhead
- Centralized Package Database
- Fuzzy Matching Debug Symbols
- The Language Syntax (Continued)
- String Literals
- Built-in Regex Support
- Full Control-Flow Support
- Floating-Point Number Support
- Compared to Open-Source Toolchains
- Transparent Debug Symbol Handling
- Debug Symbols: No Runtime Overhead
- Centralized Package Database
- Fuzzy Matching Debug Symbols
Ylang: Universal Language for eBPF, Stap+, GDB, and More (Part 2 of 4)
- The Language Syntax (Continued)
- Macros with Extensions
- Tracer and Tracee Spaces
- Probes
- Extended Variable Types
- The Language Syntax (Continued)
- Macros with Extensions
- Tracer and Tracee Spaces
- Probes
- Extended Variable Types
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
- What is Dynamic Tracing
- Why the “Y” Name
- Getting Started
- Various Backends and Runtimes
- Why a Unified Frontend Language
- The Language Syntax
Gateway Config's Version Control & Release Management in OpenResty Edge
- Create a page rule for the sample application
- Release the page rule
- Test
- Modify the page rule
- Release the modification
- Test the modification
- Revert the release
- Test of the release reverting
- Create a page rule for the sample application
- Release the page rule
- Test
- Modify the page rule
- Release the modification
- Test the modification
- Revert the release
- Test of the release reverting
