envoy 功能介绍
L3/L4 filter architecture: At its core, Envoy is an L3/L4 network proxy. A pluggable filter chain mechanism allows filters to be written to perform different TCP proxy tasks and inserted into the main server. Filters have already been written to support various tasks such as raw TCP proxy,HTTP proxy, TLS client certificate authentication, etc.
HTTP L7 filter architecture: HTTP is such a critical component of modern application architectures that Envoy supports an additional HTTP L7 filter layer. HTTP filters can be plugged into the HTTP connection management subsystem that perform different tasks such as buffering, rate limiting,routing/forwarding, sniffing Amazon’s DynamoDB, etc.
First class HTTP/2 support: When operating in HTTP mode, Envoy supports both HTTP/1.1 and HTTP/2. Envoy can operate as a transparent HTTP/1.1 to HTTP/2 proxy in both directions. This means that any combination of HTTP/1.1 and HTTP/2 clients and target servers can be bridged. The recommended service to service configuration uses HTTP/2 between all Envoys to create a mesh of persistent connections that requests and responses can be multiplexed over. Envoy does not support SPDY as the protocol is being phased out.
HTTP L7 routing: When operating in HTTP mode, Envoy supports a routing subsystem that is capable of routing and redirecting requests based on path, authority, content type, runtime values, etc. This functionality is most useful when using Envoy as a front/edge proxy but is also leveraged when building a service to service mesh.
gRPC support: gRPC is an RPC framework from Google that uses HTTP/2 as the underlying multiplexed transport. Envoy supports all of the HTTP/2 features required to be used as the routing and load balancing substrate for gRPC requests and responses. The two systems are very complementary.
MongoDB L7 support: MongoDB is a popular database used in modern web applications. Envoysupports L7 sniffing, statistics production, and logging for MongoDB connections.
DynamoDB L7 support: DynamoDB is Amazon’s hosted key/value NOSQL datastore. Envoysupports L7 sniffing and statistics production for DynamoDB connections.
Service discovery: Service discovery is a critical component of service oriented architectures. Envoy supports multiple service discovery methods including asynchronous DNS resolution and REST based lookup via a service discovery service.
Health checking: The recommended way of building an Envoy mesh is to treat service discovery as an eventually consistent process. Envoy includes a health checking subsystem which can optionally perform active health checking of upstream service clusters. Envoy then uses the union of service discovery and health checking information to determine healthy load balancing targets. Envoy also supports passive health checking via an outlier detection subsystem.
Advanced load balancing: Load balancing among different components in a distributed system is a complex problem. Because Envoy is a self contained proxy instead of a library, it is able to implement advanced load balancing techniques in a single place and have them be accessible to any application. Currently Envoy includes support for automatic retries, circuit breaking, global rate limiting via an external rate limiting service, request shadowing, and outlier detection. Future support is planned for request racing.
Front/edge proxy support: Although Envoy is primarily designed as a service to service communication system, there is benefit in using the same software at the edge (observability, management, identical service discovery and load balancing algorithms, etc.). Envoy includes enough features to make it usable as an edge proxy for most modern web application use cases. This includes TLS termination, HTTP/1.1 and HTTP/2 support, as well as HTTP L7 routing.
Best in class observability: As stated above, the primary goal of Envoy is to make the network transparent. However, problems occur both at the network level and at the application level. Envoy includes robust statistics support for all subsystems. statsd (and compatible providers) is the currently supported statistics sink, though plugging in a different one would not be difficult. Statistics are also viewable via the administration port. Envoy also supports distributed tracing via thirdparty providers.
Dynamic configuration: Envoy optionally consumes a layered set of dynamic configuration APIs. Implementors can use these APIs to build complex centrally managed deployments if desired.
envoy 功能介绍的更多相关文章
- .NET平台开源项目速览(13)机器学习组件Accord.NET框架功能介绍
Accord.NET Framework是在AForge.NET项目的基础上封装和进一步开发而来.因为AForge.NET更注重与一些底层和广度,而Accord.NET Framework更注重与机器 ...
- 微信小程序产品定位及功能介绍
产品定位及功能介绍 微信小程序是一种全新的连接用户与服务的方式,它可以在微信内被便捷地获取和传播,同时具有出色的使用体验. 小程序注册 注册小程序帐号 在微信公众平台官网首页(mp.weixin.qq ...
- 带你走近AngularJS - 基本功能介绍
带你走近AngularJS系列: 带你走近AngularJS - 基本功能介绍 带你走近AngularJS - 体验指令实例 带你走近AngularJS - 创建自定义指令 ------------- ...
- MWeb 1.4 新功能介绍一:引入文件夹到 MWeb 中管理,支持 Octpress、Jekyll 等静态博客拖拽插入图片和实时预览
之前在 MWeb 中打开非文档库中的 Markdown 文档,如果文档中有引用到本机图片,是没办法在 MWeb 中显示出来和预览的.这是因为 Apple 规定在 Mac App Store(MAS) ...
- Joomla软件功能介绍与开源程序大比拼Joomla,wordpress,Drupal哪个好?
Joomla 软件功能介绍: Joomla!是一套在国外相当知名的内容管理系统 (Content Management System, CMS),它属于Portal(企业入口网站)类型,顾名思义 ...
- CentOS以及Oracle数据库发展历史及各版本新功能介绍, 便于构造环境时有个对应关系
CentOS版本历史 版本 CentOS版本号有两个部分,一个主要版本和一个次要版本,主要和次要版本号分别对应于RHEL的主要版本与更新包,CentOS采取从RHEL的源代码包来构建.例如CentOS ...
- python中列表、元组、字典内部功能介绍
一.列表(list) 常用功能的介绍:
- 网页引导:jQuery插件实现的页面功能介绍引导页效果
现在很多网站不仅是介绍,更多的是有一些功能,怎么样让客户快速的知道网站有哪些功能呢?这里pagewalkthrough.js插件能帮我们实现,它是一个轻量级的jQuery插件,它可以帮助我们创建一个遮 ...
- 原创开源项目HierarchyViewer for iOS 2.1 Beta新功能介绍
回顾 HierarchyViewer for iOS是我们发布的一个开源项目,采用GPL v3.0协议. HierarchyViewer for iOS可以帮助iOS应用的开发和测试人员,在没有源代码 ...
随机推荐
- Qt性能问题
使用Qt库开发通信上位机软件,如串口.CAN总线等,涉及到接收界面高速刷新,会使CPU消耗率过高(20%以上),可能还会卡顿. 具体原因不知道,突然想放弃Qt了 ps: 1.问题出在界面刷新,会占据C ...
- iOS开发小结 - 让你的APP后台运行
最近项目有个需求需要让app在后台一直运行计时着,找了一些资料,只能用比较无耻的做法了,播放一段没有声音的音频文件,这样你的APP就不会被系统杀掉~~ 我们只需要用到<AVFoundation/ ...
- unidbnavigator提示汉化
- 关于ENABLE_BITCODE
pod 'TSVoiceConverter' 如果,设置了工程target的ENABLE_BITCODE为NO.但是,在真机上运行时,仍然提示类似于如下错误: URGENT: all bitcode ...
- java中规范语句
1. 直接常量:A=a,a是数字,是定死的数字,简单说是常数 符号常量:A=a,a是定死的符号,
- windchill系统——开发_菜单栏添加选项(模型添加action)
目录:C:\ptc\Windchill_11.0\Windchill\codebase\config\actions 文件:custom-actionModels.xml和custom-actions ...
- RDP 协议组件 X.224 在协议流中发现一个错误并且中断了客户端连接
如果你的服务器有如下错误: “RDP 协议组件 X.224 在协议流中发现一个错误并且中断了客户端连接.” 可能的有2种: 1:你试试能否能继续远程登陆,有可能你的远程登陆组件出现问题. 2:有人攻击 ...
- Pandas排序
Pandas有两种排序方式,它们分别是 - 按标签 按实际值 下面来看看一个输出的例子. import pandas as pd import numpy as np unsorted_df=pd.D ...
- Angular 2 Architecture Overview
Module 简单来说模块(module)就是完成共同目的的代码块,export一些内容例如一个类.函数.或值变量. component就是一个基本的Angular块,一个component类其实也是 ...
- MySQL5.7版本开启二进制日志是log_bin、bin-log 还是 bin_log ?
已Mac系统为例,文件:/usr/local/mysql/support-files/my-default.cnf 是mysql的默认配置文件,你可以直接修改这个文件但是不推荐,你可以在/etc/my ...