限流来提高系统的限流能力。 Nacos 的 open API 都是基于 http 协议，可以很方便地使用 nginx 来做限流，不需要自身再开 发限流模块来支持各种限流策略。nginx 的基本使用以及 nginx+lua 模块安装网上资源很丰富，这 里就不再介绍。 Nacos 每个接口执行的代价不尽相同，⼀般来说写操作代价比读操作大，与此同时还有高频操作和 低频操作之分，SDK 调用的接口⼀般来说是高频接口，容易出现问题，所以在生产环境需要将这些 对写操作进行限流，可以有效防止热点写问题。对同⼀个数据的高频写会触 发 mysql 的行锁，从而导致 mysql 的多线程任务因等待行锁排队，最终导致 mysql 所有操作都 超时服务不可用。这里通过 nginx lua 模块获取 post 请求的参数，设置 limit_key 。 limit_req_zone $limit_key zone=limit_publish_config:10m rate=5r/s; set $tenant $arg_tenant; set $limit_key "$remote_addr+$dataId+$group+$tenant"; lua_need_request_body on; rewrite_by_lua ' ngx.req.read_body() local post_args = ngx.req.get_post_args() if post_args["dataId"]

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

Documentation, Release 4.6.0 Package, dependency and environment management for any language—Python, R, Ruby, Lua, Scala, Java, JavaScript, C/ C++, FORTRAN Conda is an open source package management system and environment (#4498) • improve empty repodata noarch warning and error messages (#4499) • don’t add python and lua as default specs for private envs (#4529, #4533) • let default_python be None (#4547, #4550) 5.50 2016-02-01 3.19.1: • resolve.py: properly escape periods in version numbers, #1926 • support for pinning Lua by default, #1934 • remove hard-coded test URLs, a module cio_test is now expected when CIO_TEST is

Documentation, Release 4.6.1 Package, dependency and environment management for any language—Python, R, Ruby, Lua, Scala, Java, JavaScript, C/ C++, FORTRAN Conda is an open source package management system and environment (#4498) • improve empty repodata noarch warning and error messages (#4499) • don’t add python and lua as default specs for private envs (#4529, #4533) • let default_python be None (#4547, #4550) 5.50 2016-02-01 3.19.1: • resolve.py: properly escape periods in version numbers, #1926 • support for pinning Lua by default, #1934 • remove hard-coded test URLs, a module cio_test is now expected when CIO_TEST is

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