share dict Nginx + Lua http(s) ⼆次优化实践 ⼆次优化实践 - ⾼性能调优利器，⽕焰图 ⼆次优化实践 - 去掉不必要的共享内存交换 rewrite phase bodyfiler phase log phase init worker phase background timer client Lua table Nginx + Lua http(s) rewrite init worker phase background timer client share dict Nginx + Lua http(s) ⼆次优化实践 ➤ Nginx 性能很⾼，⽽⾼性能的代码有时候是不优雅的 ➤ reuse the temporary Lua table object ➤ use `ngx.var.http_****` to fetch specific header ，后⾯会有更好表现 ➤ PR：https://github.com/apache/skywalking-nginx-lua/pull/49 为什么要参与开源项⽬ “懂王下线，赌王上线” 懂王下线，赌王上线 [bug] SkyWalking-nginx-lua0.3.0 traceid repeat all the time: https://github.com/apa

engine in C++ Learned about SWIG Learned that Python is wrong for embedding (Global state), chose Lua 2008 - Created SWIG Starter Kit SWIG is great for binding to other languages, but requires a second @le�icus emptycrate.com/idocpp SWIG Can generate wrapper libraries for: C# D Go Guile Java Javascript Lua MzScheme/Racket OCaml 4 . 3Copyright Jason Turner @le�icus emptycrate.com/idocpp SWIG Can generate Jason Turner @le�icus emptycrate.com/idocpp SWIG I have personally used it for: C# Java Javascript Lua Python Ruby 4 . 5Copyright Jason Turner @le�icus emptycrate.com/idocpp What About Boost::Python

Native Support: Lua plugins • Few developers are familiar with Lua • Solution：Go plugin Envoy • C++ filter：difficult to get started • Lua filter：Few features, few developers can write Lua • Solution：WASM，not DAG，generate AST(Abstract Syntax Tree) • Generate Lua codes from AST • https://github.com/api7/jsonschema Step 3 • Apache APISIX watch and sync Lua code from etcd(like serverless plugin) More •

languages which are implemented in C and C++, we can run them on the web as well, for example Python and Lua. (read)Emscripten an LLVM-to-JavaScript compiler — 2011 We presented Emscripten, an LLVM-to-JavaScript languages which are implemented in C and C++, we can run them on the web as well, for example Python and Lua. What’s particularly neat about Emscripten is the asm.js approach that followed it. It has a clever

may still be learning how to write filters rules for Envoy. #IstioCon Easy to extend ● NGINX + Lua ● multi-language plugins #IstioCon How to implement it #IstioCon Apache APISIX Native Support

RocketMQ、gRPC、HTTP3、 MQTT、QUIC、TLS1.3 等 多协议 支持模块化 自适应限流 多协议深度扩展能力 多进程 WAF WebAssembly 兼容用户态协议栈 Lua 支持 核心和开放能力 适配 Istio，兼容 UDAP 协议 Zookeeper，Etcd Open Tracing, Jaeger Prometheus, StatsD 生态融合

FilterChains Router Service NET/IO PROTOCOL Cluster Router … Filter Pipeline Extension JavaScript Lua GoPlugin ScriptFilter File Istio xds rest api k8s configmap config file mobile openapi mgs15/21

Sidecar 资源占用  按需下发配置  配置本身的精简 资源占用降低了 60% 较低的学习/维护成本  APISIX 丰富的文档，快速上手  抽象出来的网关对象通俗易懂  源码基于 lua 易学易懂  二次开发相比 C++ 要简单许多 强大的扩展/定制化能力  配合CRD进行扩展，更灵活 更原生 不侵入Istio原有配置 降低用户迁移成本/减少冲突可 能 通过 controller

开放了自定义负载均衡的挂载点，其他网关都不支持 独创的插件编排/低代码 API 网关 Plugin Orchestration • Kong：支持 Go 编写的插件 • Envoy：支持 Lua、WASM 编写的 filter • Apache APISIX：为什么要“写”插件？ops、PM 也可以直接创造一个插件 • 解决方案：微插件、低代码，需要底层架构和插件足够灵活 有众多信赖的全球领军企业

Health checkers ● Transport sockets ● Retry policy ● Resource monitors ● Stats sink 扩展方式： ● C++ ● Lua(目前仅限于HTTP Traffic) ● Go extensions (beta, for Cilium)Envoy最新的扩展方式：Web Assembly Part 2：ServiceMesh灵魂拷问二：性能有了，架构怎么办？