OpenResty XRay Aug 28, 2026

OpenResty XRay Updated Aug 28, 2026 17 mins read

Flame Graphs: How to Read a CPU Flame Graph and Find the Code Burning Your CPU

tutorial flame-graph cpu profiling openresty-xray performance

• What is a flame graph: definition, axes, and the four rules
• How to read a flame graph: plateaus, towers, hair, and self vs total
• Three real production flame graphs: PHP preg_match, Go regexp.MustCompile, Erlang erts_pcre_exec
• From 100% CPU to the culprit line: a four-step workflow with a per-stack routing table
• How to get a flame graph for your stack
• Icicle graphs, flame charts, and other variants
• Can AI read flame graphs for you?

OpenResty XRay Aug 28, 2026

OpenResty XRay Updated Aug 28, 2026 17 mins read

P99 Latency: Why Averages Lie, and How to Diagnose the Slowest 1%

openresty-xray p99 latency performance flame-graph

• What is P99 latency?
• P50 vs P95 vs P99: what each percentile tells you
• Why average latency lies
• Why is P99 latency high? A root-cause spectrum
• How to diagnose high P99 latency
• How to reduce P99 latency: fix what you found
• Summary
• Frequently Asked Questions

OpenResty XRay Aug 28, 2026

OpenResty XRay Updated Aug 28, 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

OpenResty XRay Aug 28, 2026

OpenResty XRay Updated Aug 28, 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

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

OpenResty XRay Aug 3, 2026

OpenResty XRay Updated Aug 3, 2026 2 mins read

OpenResty XRay Version 26.7.15. Now Available

openresty-xray releases

• Key Highlights
• Other Important Updates

OpenResty XRay Aug 28, 2026

OpenResty XRay Updated Aug 28, 2026 5 mins read

OpenResty XRay AI Assistant: Making Every Piece of Analysis Data Speak

openresty-xray ai analyzer

• How Is It Different from Pasting a Report into ChatGPT?
• Three Typical Scenarios
• FAQ: Can AI Really Read a Flame Graph? How Reliable Is It?

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

OpenResty XRay Jul 7, 2026

OpenResty XRay Updated Jul 7, 2026 4 mins read

OpenResty Private Libraries: High-Performance Lua & Nginx Modules

private-library openresty nginx lua openresty-xray

• The Full Catalog
• What’s Inside, by Scenario
• How Licensing Works
• FAQ

OpenResty Open Source Jul 13, 2026

OpenResty Open Source Updated Jul 13, 2026 11 mins read

OpenResty Tutorial: 7-Step Hands-On Guide from Hello World to Production

nginx openresty tutorial lua

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

OpenResty Open Source Aug 24, 2026

OpenResty Open Source Updated Aug 24, 2026 3 mins read

OpenResty 1.31.1.1 Released

openresty releases

• Version highlights
• Full Changelog
• Feedback

OpenResty Open Source Aug 24, 2026

OpenResty Open Source Updated Aug 24, 2026 2 mins read

OpenResty 1.29.2.5 Released

openresty releases

• Version highlights
• Full Changelog
• Feedback

OpenResty Open Source Aug 24, 2026

OpenResty Open Source Updated Aug 24, 2026 1 min read

OpenResty 1.29.2.4 released

openresty releases

• Version highlights
• Full Change logs

OpenResety Edge Aug 28, 2026

OpenResety Edge Updated Aug 28, 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

OpenResty XRay Jun 26, 2026

OpenResty XRay Updated Jun 26, 2026 2 mins read

OpenResty XRay Version 26.5.11. Now Available

openresty-xray releases

• Key Highlights
• Other Important Updates

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?

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

OpenResety Edge Aug 26, 2026

OpenResety Edge Updated Aug 26, 2026 10 mins read

OpenResty Edge Database Backup and Failover: Why Replication Is Not a Backup

openresty-edge db

• First line of defense: scheduled database backups and off-host sync
• Second line of defense: does streaming replication protect against accidental deletion?
• Third line of defense: automatic database failover cluster
• Backup vs. replication vs. failover: which do you need?
• Frequently asked questions

OpenResety Edge Aug 28, 2026

OpenResety Edge Updated Aug 28, 2026 12 mins read

Kubernetes Gateway Lifecycle Management: Auto-Approve Nodes & Unify Multi-Cluster Control with OpenResty Edge

openresty-edge kubernetes gateway overview

• Why traditional gateway management breaks in Kubernetes
• How to automate Kubernetes gateway node onboarding and approval
• Managing multiple Kubernetes clusters from a single control plane
• Two-tier upstreams: mapping Kubernetes upstream ownership to teams
• Summary: choosing a gateway for Kubernetes