OpenResty XRay Nov 8, 2024

OpenResty XRay 更新日 Nov 8, 2024 読了時間 約5分

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

OpenResty XRay Nov 8, 2024

OpenResty XRay 更新日 Nov 8, 2024 読了時間 約7分

Memory and CPU usage statistics among Kong plugins online (using OpenResty XRay)

• CPU usage among all Kong plugins in a server process
• Memory usage among all Kong plugins in a server process
• Extra overhead for the servers

OpenResty XRay Nov 8, 2024

OpenResty XRay 更新日 Nov 8, 2024 読了時間 約5分

Troubleshooting the extra 200-ms request latency online

• The Problem
• The Analsysis Process
• Fully-automated analysis
• What is OpenResty XRay

OpenResty XRay Nov 8, 2024

OpenResty XRay 更新日 Nov 8, 2024 読了時間 約8分

Real-Time Request Counting against Nginx Processes via YSQL

• How to install the run-ysql tool
• Count total requests served in real time
• Filter out specific requests
• Using YSQL in the Web Console
• True non-invasive tracing

OpenResty XRay Nov 8, 2024

OpenResty XRay 更新日 Nov 8, 2024 読了時間 約6分

When Lua IPC Pipes Block OpenResty or Nginx's Event Loops

• The Problem
• Analyses
• Solutions
• Results

OpenResty XRay Nov 8, 2024

OpenResty XRay 更新日 Nov 8, 2024 読了時間 約8分

Optimize Memory Fragmentation due to Huge Nginx Configuration

• Challenges
• Analyses
• Solutions
• Results

OpenResty XRay Nov 8, 2024

OpenResty XRay 更新日 Nov 8, 2024 読了時間 約11分

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

OpenResty XRay Nov 8, 2024

OpenResty XRay 更新日 Nov 8, 2024 読了時間 約9分

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

OpenResty XRay Nov 8, 2024

OpenResty XRay 更新日 Nov 8, 2024 読了時間 約11分

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

OpenResty Open Source Nov 8, 2024

OpenResty Open Source 更新日 Nov 8, 2024 読了時間 約4分

Install OpenResty on Ubuntu 20.04 via apt-get

OpenResty Open Source Nov 8, 2024

OpenResty Open Source 更新日 Nov 8, 2024 読了時間 約5分

Streaming HTTP Response Output in OpenResty

OpenResty Open Source Nov 8, 2024

OpenResty Open Source 更新日 Nov 8, 2024 読了時間 約4分

Precompile Lua Modules into LuaJIT Bytecode to Speedup OpenResty Startup

OpenResty Open Source Nov 8, 2024

OpenResty Open Source 更新日 Nov 8, 2024 読了時間 約4分

Timing Lua Code Correctly in OpenResty

OpenResty Open Source Nov 8, 2024

OpenResty Open Source 更新日 Nov 8, 2024 読了時間 約3分

Lookup OpenResty Documentation on Terminal with restydoc

OpenResty Open Source Nov 8, 2024

OpenResty Open Source 更新日 Nov 8, 2024 読了時間 約4分

Share Data Across Requests Served by OpenResty

OpenResty Open Source Nov 8, 2024

OpenResty Open Source 更新日 Nov 8, 2024 読了時間 約4分

Install OpenResty on CentOS 8 via dnf

OpenResty Open Source Nov 8, 2024

OpenResty Open Source 更新日 Nov 8, 2024 読了時間 約4分

The resty Command-Line Utility Demo

OpenResty Open Source Nov 8, 2024

OpenResty Open Source 更新日 Nov 8, 2024 読了時間 約4分

Write Your Own Lua Modules for OpenResty Applications

OpenResty Open Source Nov 8, 2024

OpenResty Open Source 更新日 Nov 8, 2024 読了時間 約3分

Hello World HTTP Example in OpenResty

OpenResty XRay Nov 8, 2024

OpenResty XRay 更新日 Nov 8, 2024 読了時間 約19分

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 Nov 8, 2024

OpenResty XRay 更新日 Nov 8, 2024 読了時間 約10分

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 Nov 8, 2024

OpenResty XRay 更新日 Nov 8, 2024 読了時間 約13分

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 Nov 8, 2024

OpenResty XRay 更新日 Nov 8, 2024 読了時間 約11分

How OpenResty and Nginx Allocate and Manage Memory

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