OpenResty 1.31.8.1 Released
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- Version highlights
- Full Changelog
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Featured Articles
OpenResty XRay reduce your CPU usage up to
90%
OpenResty XRay reduce your CPU usage up to 90%
Latest Articles
LuaJIT in OpenResty: How It Works and How luajit2 Differs
- Which Lua runtime OpenResty uses
- How Lua code runs inside Nginx workers
- How LuaJIT interprets and compiles code
- How luajit2 differs from upstream LuaJIT
- How LuaJIT-plus relates to the standard runtime
- LuaJIT vs luajit2: frequently asked questions
- Where to continue reading by problem
- Which Lua runtime OpenResty uses
- How Lua code runs inside Nginx workers
- How LuaJIT interprets and compiles code
- How luajit2 differs from upstream LuaJIT
- How LuaJIT-plus relates to the standard runtime
- LuaJIT vs luajit2: frequently asked questions
- Where to continue reading by problem
What Is OpenResty? From Nginx and LuaJIT to Real-World Use Cases
- What OpenResty Is Used For
- How OpenResty Works
- Do You Need to Know Lua?
- Is OpenResty a Web Server? How Does It Relate to Nginx?
- What OpenResty Is Made Of
- Who Uses OpenResty
- Who Maintains OpenResty
- FAQ
- What OpenResty Is Used For
- How OpenResty Works
- Do You Need to Know Lua?
- Is OpenResty a Web Server? How Does It Relate to Nginx?
- What OpenResty Is Made Of
- Who Uses OpenResty
- Who Maintains OpenResty
- FAQ
Multi-Provider DNS Redundancy: Stay Online When a DNS Provider Fails, Geo-Routing Intact
- Why multi-provider DNS often means giving up intelligent routing
- How OpenResty Edge adds DNS redundancy: primary for intelligent routing, secondary providers as fallback
- Which zones suit this multi-provider DNS setup
- Frequently asked questions
- Why multi-provider DNS often means giving up intelligent routing
- How OpenResty Edge adds DNS redundancy: primary for intelligent routing, secondary providers as fallback
- Which zones suit this multi-provider DNS setup
- Frequently asked questions
From AI Flame Graph Analysis to Verified Fixes: A Coding-Agent Optimization Loop with OpenResty XRay
- Prerequisite: OpenResty XRay must already be installed on the target machine
- Your coding agent isn’t short on intelligence—it’s short on runtime visibility
- Three optimization rounds: 336 → 4,457 → 26,028 → 29,968 RPS
- Lua + C, two perspectives: why you shouldn’t try to optimize writev
- FAQ
- Prerequisite: OpenResty XRay must already be installed on the target machine
- Your coding agent isn’t short on intelligence—it’s short on runtime visibility
- Three optimization rounds: 336 → 4,457 → 26,028 → 29,968 RPS
- Lua + C, two perspectives: why you shouldn’t try to optimize writev
- FAQ
OpenResty XRay Version 26.9.1. Now Available
- Key Highlights
- Other Important Updates
- Key Highlights
- Other Important Updates
Flame Graphs: How to Read a CPU Flame Graph and Find the Code Burning Your CPU
- 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?
- 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?
P99 Latency: Why Averages Lie, and How to Diagnose the Slowest 1%
- 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
- 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
Memory Leak Detection in Production: From RSS Curve to Source Line
- 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
Off-CPU Analysis: Four Root Causes Behind Low CPU Yet High Latency
- 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
OpenResty XRay Version 26.7.15. Now Available
- Key Highlights
- Other Important Updates
- Key Highlights
- Other Important Updates
OpenResty XRay AI Assistant: Making Every Piece of Analysis Data Speak
- 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?
- 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?
CDN for Live Streaming: Surviving Peak Events Without Peak-Event Bills
- 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
Building a Self-Hosted Live Streaming CDN for HLS with OpenResty Edge
- 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 Private Libraries: High-Performance Lua & Nginx Modules
- The Full Catalog
- What’s Inside, by Scenario
- How Licensing Works
- FAQ
- The Full Catalog
- What’s Inside, by Scenario
- How Licensing Works
- FAQ
Install OpenResty - Complete Setup Guide for All Platforms
- 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
OpenResty 1.31.1.1 Released
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- Version highlights
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OpenResty 1.29.2.5 Released
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OpenResty 1.29.2.4 released
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- Version highlights
- Full Change logs
