OPENRESTY XRAY Nov 12, 2021
OPENRESTY XRAY Nov 12, 2021
Ylang: Universal Language for eBPF, Stap+, GDB, and More (Part 1)
* 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
* 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
* 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
* 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
* On The System Level * On The Application Level * For Traditional Nginx Servers
OPENRESTY XRAY Aug 24, 2022
OPENRESTY XRAY Aug 24, 2022
Resolving Bilibili’s major site incident with OpenResty XRay
* The incident * Process of resolution * Hardening after the incident * OpenResty XRay Services
OPENRESTY XRAY Jul 14, 2022
OPENRESTY XRAY Jul 14, 2022
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 Jun 11, 2022
OPENRESTY XRAY Jun 11, 2022
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 Jun 10, 2022
OPENRESTY XRAY Jun 10, 2022
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 EDGE Jun 7, 2022
OPENRESTY EDGE Jun 7, 2022
How to use custom dynamic metrics in OpenResty Edge
