Featured Articles

Photo by Yichun Zhang
dynamic-tracing
...
openresty-xray bilibili
8 mins read

How a Single "0" Took Down Bilibili — Every Server at 100% CPU, and Reboots Didn't Help

How a Single "0" Took Down Bilibili — Every Server at 100% CPU, and Reboots Didn't Help

Binary Vulnerability Scanning: Catch Backported Patches, Cut False Positives
security
...
vulnerability openresty-xray cve
10 mins read

Binary Vulnerability Scanning: Catch Backported Patches, Cut False Positives

Binary Vulnerability Scanning: Catch Backported Patches, Cut False Positives

Introduction to OpenResty XRay
openresty-xray
...
nginx
6 mins read

Introduction to OpenResty XRay

Introduction to OpenResty XRay

Nginx Reverse Proxy QPS Dropped 15x: A Missing upstream keepalive and an -O0 Debug Build
openresty-xray
...
case-study lua nginx off-cpu
4 mins read

Nginx Reverse Proxy QPS Dropped 15x: A Missing upstream keepalive and an -O0 Debug Build

Nginx Reverse Proxy QPS Dropped 15x: A Missing upstream keepalive and an -O0 Debug Build

Non-Invasive Java Profiler: Capture Method Arguments in Production Without a Java Agent
openresty-xray
...
java probe
4 mins read

Non-Invasive Java Profiler: Capture Method Arguments in Production Without a Java Agent

Non-Invasive Java Profiler: Capture Method Arguments in Production Without a Java Agent

Photo by Philip Brown
dynamic-tracing
...
openresty-xray
26 mins read

The Wonderland of Dynamic Tracing (Part 1 of 3)

The Wonderland of Dynamic Tracing (Part 1 of 3)

Photo by Jose G. Ortega Castro
nginx
...
openresty memory openresty-xray dynamic-tracing
13 mins read

How OpenResty and Nginx Shared Memory Zones Consume RAM

How OpenResty and Nginx Shared Memory Zones Consume RAM

Photo by Harrison Broadbent
nginx
...
openresty memory luajit openresty-xray dynamic-tracing
13 mins read

Nginx Memory Usage Explained: Where the RAM Actually Goes

Nginx Memory Usage Explained: Where the RAM Actually Goes

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Latest Articles

OpenResty XRay Aug 21, 2026

OpenResty XRay Updated Aug 21, 2026 14 mins read

Memory Leak Detection in Production: From RSS Curve to Source Line

openresty-xray memory tutorial
  • The Symptom: A Memory Curve That Only Goes Up
  • Memory Leak or Just High Memory Usage?
  • Four Leak Patterns with Real Root-Cause Chains
  • It Looks Like a Leak, but It Isn’t
  • How to Locate a Leak: Top-Down Layered Attribution
  • Why Traditional Tools Fall Short in Production
  • Frequently Asked Questions
  • The Symptom: A Memory Curve That Only Goes Up
  • Memory Leak or Just High Memory Usage?
  • Four Leak Patterns with Real Root-Cause Chains
  • It Looks Like a Leak, but It Isn’t
  • How to Locate a Leak: Top-Down Layered Attribution
  • Why Traditional Tools Fall Short in Production
  • Frequently Asked Questions

OpenResty XRay Aug 14, 2026

OpenResty XRay Updated Aug 14, 2026 11 mins read

Off-CPU Analysis: Four Root Causes Behind Low CPU Yet High Latency

openresty-xray off-cpu tutorial
  • What Is Off-CPU Time?
  • The Symptom: CPU Usage Won’t Climb, Yet Requests Are Queuing
  • Four Categories of Off-CPU Root Causes with Real-World Root-Cause Chains
  • How to Quantify Off-CPU Time
  • On-CPU + Off-CPU = Wall-Clock Time: The Bigger Picture and the Tool Ecosystem
  • FAQ
  • What Is Off-CPU Time?
  • The Symptom: CPU Usage Won’t Climb, Yet Requests Are Queuing
  • Four Categories of Off-CPU Root Causes with Real-World Root-Cause Chains
  • How to Quantify Off-CPU Time
  • On-CPU + Off-CPU = Wall-Clock Time: The Bigger Picture and the Tool Ecosystem
  • FAQ

OpenResety Edge Jul 17, 2026

OpenResety Edge Updated Jul 17, 2026 13 mins read

CDN for Live Streaming: Surviving Peak Events Without Peak-Event Bills

openresty-edge cdn live-streaming
  • Why live streams crash at peak: running day-to-day doesn’t mean surviving the peak
  • How a private CDN turns peak stability from probability into certainty
  • Live streaming CDN cost comparison: surviving the peak isn’t paying for the peak
  • The real cost of a private CDN: not the same as building from scratch
  • Beyond delivery: what a live streaming scenario needs from the same gateway layer
  • FAQ
  • Why live streams crash at peak: running day-to-day doesn’t mean surviving the peak
  • How a private CDN turns peak stability from probability into certainty
  • Live streaming CDN cost comparison: surviving the peak isn’t paying for the peak
  • The real cost of a private CDN: not the same as building from scratch
  • Beyond delivery: what a live streaming scenario needs from the same gateway layer
  • FAQ

OpenResety Edge Aug 4, 2026

OpenResety Edge Updated Aug 4, 2026 18 mins read

Building a Self-Hosted Live Streaming CDN for HLS with OpenResty Edge

tutorial openresty-edge cache proxy hls live-streaming
  • Why live HLS breaks a naive caching setup
  • Building it on OpenResty Edge: two page rules with opposite TTLs
  • The most critical step: the Use stale proxy cache action
  • A shield tier with gateway partitions: collapsing to one fetch network-wide
  • Verifying the configuration and load testing
  • FAQ
  • Why live HLS breaks a naive caching setup
  • Building it on OpenResty Edge: two page rules with opposite TTLs
  • The most critical step: the Use stale proxy cache action
  • A shield tier with gateway partitions: collapsing to one fetch network-wide
  • Verifying the configuration and load testing
  • FAQ

OpenResty Open Source Jul 13, 2026

OpenResty Open Source Updated Jul 13, 2026 9 mins read

Install OpenResty - Complete Setup Guide for All Platforms

nginx openresty tutorial install
  • Supported Platforms
  • Quick Start (Ubuntu / Debian)
  • Platform Installation Guides
  • ARM64 / Aarch64
  • Alpine Linux
  • macOS & Building from Source
  • Verify Your Installation
  • FAQ
  • Supported Platforms
  • Quick Start (Ubuntu / Debian)
  • Platform Installation Guides
  • ARM64 / Aarch64
  • Alpine Linux
  • macOS & Building from Source
  • Verify Your Installation
  • FAQ

OpenResety Edge Aug 13, 2026

OpenResety Edge Updated Aug 13, 2026 17 mins read

Do You Need a Service Mesh? When a Centralized Gateway Is Enough

tutorial openresty-edge gateway microservices
  • Do you need a service mesh? When a centralized gateway is the better fit
  • Four pain points of ungoverned east-west traffic
  • Service Mesh vs. centralized gateway: engineering trade-offs
  • Full lifecycle walkthrough: permissions → canary → rollback
  • Three-stage rollout path, real-world results, and FAQ
  • Do you need a service mesh? When a centralized gateway is the better fit
  • Four pain points of ungoverned east-west traffic
  • Service Mesh vs. centralized gateway: engineering trade-offs
  • Full lifecycle walkthrough: permissions → canary → rollback
  • Three-stage rollout path, real-world results, and FAQ

OpenResety Edge Aug 24, 2026

OpenResety Edge Updated Aug 24, 2026 2 mins read

OpenResty Edge Version 26.6.8 Now Available

openresty-edge releases
  • Core Highlights
  • Enhanced Features & Increased Flexibility
  • Improved Usability & Observability
  • Key Fixes and Stability Enhancements
  • How to Upgrade?
  • Core Highlights
  • Enhanced Features & Increased Flexibility
  • Improved Usability & Observability
  • Key Fixes and Stability Enhancements
  • How to Upgrade?

OPENRESTY Jul 30, 2026

OPENRESTY Updated Jul 30, 2026 12 mins read

XDP DDoS Mitigation in Production: Million-PPS Kernel-Native Defense, Built into OpenResty Edge

ddos
  • The impossible triangle of DDoS mitigation architectures
  • How OpenResty Edge delivers XDP DDoS mitigation for all three goals
  • Measured performance: 170k–180k PPS on an AWS t3.small, million-PPS in the lab
  • Automated DDoS response as a prerequisite, not a perk
  • Observability: real-time DDoS mitigation metrics
  • FAQ: XDP DDoS mitigation
  • The impossible triangle of DDoS mitigation architectures
  • How OpenResty Edge delivers XDP DDoS mitigation for all three goals
  • Measured performance: 170k–180k PPS on an AWS t3.small, million-PPS in the lab
  • Automated DDoS response as a prerequisite, not a perk
  • Observability: real-time DDoS mitigation metrics
  • FAQ: XDP DDoS mitigation

OpenResety Edge Jun 26, 2026

OpenResety Edge Updated Jun 26, 2026 8 mins read

OpenResty Edge Data Protection: From Scheduled Backups to Automatic Failover

openresty-edge db
  • First line: scheduled backups and off-host sync
  • Second line: primary–standby streaming replication
  • Third line: automatic failover cluster
  • Comparing the three approaches and selection guidance
  • First line: scheduled backups and off-host sync
  • Second line: primary–standby streaming replication
  • Third line: automatic failover cluster
  • Comparing the three approaches and selection guidance

OpenResety Edge Jun 26, 2026

OpenResety Edge Updated Jun 26, 2026 10 mins read

Automating Kubernetes Gateway Node Lifecycle with OpenResty Edge

openresty-edge kubernetes gateway overview
  • The gateway dilemma in the Kubernetes era: static control models vs. cloud-native reality
  • Capability one: automated lifecycle management for gateway nodes
  • Capability two: multiple K8s clusters and unified control
  • Capability three: a two-tier upstream system
  • Summary
  • The gateway dilemma in the Kubernetes era: static control models vs. cloud-native reality
  • Capability one: automated lifecycle management for gateway nodes
  • Capability two: multiple K8s clusters and unified control
  • Capability three: a two-tier upstream system
  • Summary

OPENRESTY Jul 7, 2026

OPENRESTY Updated Jul 7, 2026 9 mins read

lua-cjson Too Slow? jit.cjson Speeds Up JSON Encoding in OpenResty 18x

private-library json lua
  • Where Exactly Is the Performance Ceiling?
  • Common Workaround Strategies and Their Limitations
  • Why Custom Development or Hacking Existing Libraries is a Bad Idea
  • Seeking a More Direct Breakthrough
  • Infrastructure-Level Optimization: jit.cjson
  • Why the Official Solution is the Safer Bet
  • Minimal Adoption Cost
  • Where Exactly Is the Performance Ceiling?
  • Common Workaround Strategies and Their Limitations
  • Why Custom Development or Hacking Existing Libraries is a Bad Idea
  • Seeking a More Direct Breakthrough
  • Infrastructure-Level Optimization: jit.cjson
  • Why the Official Solution is the Safer Bet
  • Minimal Adoption Cost
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