的服务注册中心（service registry）类型的不同，会采用不同的配置方式。agent当前使用的具体service registry类型保存在 pilot-agent的registry变量里，在init函数中初始化为默认值Kubernetes。当前只处理以下三种情况： • Kubernetes • Consul • OtherPilot-Agent主要功能分析-生产Envoy配置 registry值 role istio需要从服务注册中心（service registry）获取微服务注册的情况。当前版本中istio可以对接的服务注册中心类型包括： 1."Mock" MockRegistry is a service registry that contains 2 hard-coded test services. 2. "Config" ConfigRegistry is a service registry that listens KubernetesRegistry is a service registry backed by K8s API server. 4."Consul" ConsulRegistry is a service registry backed by Consul. 5. "Eureka" EurekaRegistry is a service registry backed by Eureka. 6."CloudFoundry"

Variables. ● Error Handler. ● Job system. ● Resource Registry. ● Reads boot data. ● Listens to kernel message pump.Resource Registry Games are constructed with a wide variety of resources such materials, sounds, animations and many more. The resource registry acts as a place to store, manage and manipulate those resources. Resource Registry Renderer Physics System AI Audio compressed_textures behavior_trees audioResource Registry Resource Registry Level is streamed in Resource bundle / pack is unloaded resource_registry.get(“baz/bar/foo.wav”) resource_registry.get(“D271A15B- D4

趋势Service Mesh Meetup · BeiJing 平台体系 微博Service Mesh实践 - WeiboMesh �4 Java Server Java Client Registry Motan ➢ 服务治理理 ➢ 动态路路由 Vintage ➢ 注册中⼼心 Opendcp ➢ 智能弹性调度 Graphite ➢ 实时统计监控 平台微服务相关建设⽐比较完善 Meetup · BeiJing 改造成本 �8 微博Service Mesh实践 - WeiboMesh Server(php/java/..) golang/php/java Registry grpc/yar/motan ➢ 语⾔言特性 ➢ 历史积累 ➢ 业务侵⼊入较⼤大，client太重 ➢ 性能 ➢ 扩展性差 ➢ 推⼴广困难 Register Subscribe Mesh实践 - WeiboMesh Weibo Mesh Service A Client Weibo Mesh Service B container container Registry ClientService Mesh Meetup · BeiJing �16 微博Service Mesh实践 - WeiboMesh • 服务交互 • 服务发现 •

MSB(Consul) Service Registry Registration Registration Pilot Pull Services xDS Client Request Client Request Client RequestConsul Registry遇到的坑： 1.0版本的Consul Registry只能算PoC（原型验证），远未达到产品要求 CPU占用率超高不下 CPU占用率超高不下 (Pilot+Consul 占用冲高到 400%) • TIME_WAIT Sockets 太多导致FD耗光 Consul Registry优化 • 增加数据缓存，减少无谓的Consul Catalog API调用 • 将Polling改为Watch，大幅降低Consul服务数据变化后的同步时延 优化效果 • 200个服务的规模下，CPU占用率降低了一个数量级 • 服务数据变化同步时延从分钟级降低到秒级 Istio1.0中不支持多网络平面，当服务地址和Envoy地址分别位于两个网络上时，会导致转发请求时 发生死循环，导致socket耗尽，Envoy不停重启。 Pilot Service Registry Register service (IP :10.75.8.101) 10.75.8.101 10.75.8.0/24 192.168.10.0/24 192.168.10.63

• Thrift over Netty • 基于Java语法的DSL • Zookeeper • 胖客户端 • 基本服务治理功能 App OSP Server Service Registry Service Config Center 服务发现 服务注册 服务元数据下发 OSP client 服务路由 网络传输 服务元数据上报缺点 • 语言单一 • 升级困难 • 复 • Local Proxy负责服务治理与 远程通信 • Remote Proxy负责备份和非 主流流量 JavaApp Local Proxy OSP Server Service Registry Service Config Center Remote Proxy Cluster API Gateway 备用链路 服务发现 服务注册 配置下发 服务路由 网络传输 OSP over HTTP多语言服务端接入 • Registry Agent • sidecar • 注册代理 • 健康检查 • 服务端受限于Proxy支持的协 议（目前只支持HTTP 1.1） Local Proxy Web Server Service Registry API Gateway 健康检查 服务注册 Registry agent 服务发现 HTTP/JSON

value(any_value); json[f.name]["type"] = f.type; } return json; } Gathering type data Type registry: Contains type definitions Public API: .type->fields field.value() Implementing an RTTI runtime• runtime• Store all types • Defining Type 1 3 extern std::unordered_map type_registry; template void register_type(Field[], Method[]); struct Field; struct Method; struct std::string name; std::vector fields; std::vector methods; }; Implementing type registry• Type erasing a member variable • 1st instinct, base class with virtuals 1 4 class Field { public:

the MS VC++ runtime . . . . . . . . . . . . . . . . . . . . . . . . . 1341 35.3 _winreg —Windows registry access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1343 35.4 winsound —Sound-playing standard Python codecs (encoders and decoders) and provides access to the internal Python codec registry which manages the codec and error handling lookup process. It defines the following functions: encoding, it should return None. codecs.lookup(encoding) Looks up the codec info in the Python codec registry and returns a CodecInfo object as defined above. 首先将会在注册表缓存中查找编码，如果未找到，则会扫描注册的搜索函数列表。如果没有找到 CodecInfo

the MS VC++ runtime . . . . . . . . . . . . . . . . . . . . . . . . . 1341 35.3 _winreg —Windows registry access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1343 35.4 winsound —Sound-playing standard Python codecs (encoders and decoders) and provides access to the internal Python codec registry which manages the codec and error handling lookup process. It defines the following functions: encoding, it should return None. codecs.lookup(encoding) Looks up the codec info in the Python codec registry and returns a CodecInfo object as defined above. 首先将会在注册表缓存中查找编码，如果未找到，则会扫描注册的搜索函数列表。如果没有找到 CodecInfo

the MS VC++ runtime . . . . . . . . . . . . . . . . . . . . . . . . . 1341 35.3 _winreg —Windows registry access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1343 35.4 winsound —Sound-playing standard Python codecs (encoders and decoders) and provides access to the internal Python codec registry which manages the codec and error handling lookup process. It defines the following functions: encoding, it should return None. codecs.lookup(encoding) Looks up the codec info in the Python codec registry and returns a CodecInfo object as defined above. 首先将会在注册表缓存中查找编码，如果未找到，则会扫描注册的搜索函数列表。如果没有找到 CodecInfo

GitHub Actions for the continuous integration testing on Linux, storing them on GitHub Packages’s registry for reduced latency and cost when using Docker Hub. • Simplify the Linux GitHub actions workflows clause (#10313) Bug fixes • Remove preload_openssl for Win32 (#10298) • Add if exist to Windows registry hook (#10305) Contributors • @mingwandroid 4.4.27 4.9.0 (2020-10-19) Enhancements • Add osx-arm64 CI for docs commits (#8387, #8401, #8417) • Implement conda init --reverse to undo rc file and registry changes (#8400) • Improve handling of unicode systems (#8342, #8435) • Force the “COMSPEC” environment