Through the previous sharing, we learned about several core facilities of the microservices architecture, through which we can build a simple microservices architecture system. For example, through spring Cloud Eureka to build a highly available service registry and realize the registration and discovery of services;Load balance through the Spring cloud ribbon or feign, and fault-tolerant protection with spring cloud Hystrix to avoid a failure spread. After the microservices are set up, we will
An API gateway is a server that is the only portal to the system. From an object-oriented design perspective, it is similar to the appearance pattern. The API gateway encapsulates the system's internal architecture and provides a custom API for each client. It may also have
This essay goes on to learn a more important Component API Gateway service in MicroServices. When we finally have to provide external access to the micro-service architecture, we need a unified access portal, to hide our internal service URL details, which is a bit like the concept of the gateway in the LAN, this is the API
This is a creation in
Article, where the information may have evolved or changed.
Background
As we all know, Docker has made a profound change in the IT world these years,From development to testing to operations, there is a shadow of it everywhere.It also facilitates the micro-service architecture and moves forward.
In the latest version of Docker (CE 17.03), with swarm mode the maturity,In a simpler scenario, you can no longer need a special 基础设施管理服务编排, 服务发现 , 健康检查 , and 负载均衡 so on.
But
, any WAN is much slower than a LAN. This means that the network used by the mobile local client differs greatly from the performance characteristics of the server-side Web application's LAN. A server-side web app can send a large number of requests to the back-end service without impacting the user experience, but the mobile client can only send a small number of requests.• The number of service instances and their location (host + port) are dynamically changed.The service may change over time,
have much higher latencies. Of course, any WAN is much slower than a LAN. This means that the network used by the mobile local client differs greatly from the performance characteristics of the server-side Web application's LAN. A server-side web app can send a large number of requests to the back-end service without impacting the user experience, but the mobile client can only send a small number of requests.• The number of service instances and their location (host + port) are dynamically cha
API Gateway is a very important part of the microservices architecture, there are many different services provided to external use, API gateway can be a unified portal, can also be done on the gateway for protocol conversion, permission control and request statistics and lim
rather than databases. But at first the idea was inspired by Shenli's article, "Micro-SOA: Principles of Service design and practices", which was thought of in conjunction with other ideas. The idea is only a utility model at present, the specific use of the effect also needs further verification, but only for the small and medium-sized development team, in the early implementation of the micro-service can completely replace the API
mainly done by pre-type filters, which match the request path with the configured routing rules to find the destination address to be forwarded, while the part of the request forwarding is done by the route type filter to forward the routing address obtained by the pre type filter.
Therefore, the filter can be said to be Zuul implementation of the API gateway function of the most core components, each inco
1, prefaceAfter more than 10 days of efforts, the surging gateway has a rough prototype, the latter will continue to update and improve, please continue to pay attention to the development of the dynamicA new version of surging has also recently been updatedUpdate content:1. Extended Zookeeper Package2. Add Service Metadata3. Add an API GatewayOpen Source Address: https://github.com/dotnetcore/surging2. Sof
Another problem that needs to be considered in implementing the API gateway is partial failure. This problem occurs in distributed systems where a service invokes another service timeout or is not available. API gateway should not be blocked and wait indefinitely for downstream service status. However, how to handle th
, there is an easy to ignore, but one of Netflix's most powerful basic services, it is Zuul Gateway services. The Zuul gateway is primarily used for intelligent routing, while also supporting authentication, zone and content-aware routing, aggregating multiple underlying services into a unified external API. One of the highlights of the Zuul
What is Zuul?
Front door. API Gateway.zuul is a JVM based router and server side load balancer by Netflix.
Entrance to all requests.
As an edge service application, Zuul are built to enable dynamic routing, monitoring, resiliency and security. As a boundary application service, Zuul can realize dynamic routing , monitoring, elasticity and security.
Written in groovy.
Netflix uses Zuul for the following:Authentication 认证Insigh
About Orange
Orange is a openresty-based API Gateway. In addition to the basic functions of nginx, it can also be used for API monitoring, access control (authentication, WAF), traffic screening, access speed limit, AB test, dynamic shunt and so on. It has the following characteristics:
Provides a set of default Dashboard for dynamic management
Set up a Custom Domain Name for an API Gateway APIThe following procedure describes how to set up a custom domain name.To set-a custom domain name for the API Gateway API
Sign in to the API
from year, and sort them by value (small to high).listSystem.out.println (tr2011);Query 2:what is all the unique cities where the traders work?ListSYSTEM.OUT.PRINTLN (cities);Query 3:find all traders from Cambridge and sort them by name.ListSYSTEM.OUT.PRINTLN (traders);Query 4:return A string of all traders ' names sorted alphabetically.String traderstr = Transactions.stream (). Map (transaction-Transaction.gettrader (). GetName ()). Distinct (). Sorted (). Reduce ("", (n1, N2), N1 + N2);System
# About Kong# # BackgroundWhen we provide API or microservices, we usually use openresty nginx for traffic forwarding or adding some rules or functions, but as the number of services and references increase, complex network environment,Making maintenance difficult, not easy to scale, some features being duplicated in multiple services, we expect a tool to be centrally managed. ! [] (Images/kong_arch.png)# # IntroductionKong is the
The API gateway Ocelot uses Polly to handle some failures.
In the process of implementing the API Gateway, another issue that needs to be considered is part of failure. This problem occurs in distributed systems when one service calls another service and times out or is unavailable.
Spring Cloud ZuultheNetflix Zuulthe encapsulation is implementednew Spring boot project demo-springcloud-api-gateway, creating startup class Zuulapplication,@ Enablezuulproxy Start the configuration of the gateway agent, which is also a combination of annotations, enabling service registration discovery and fusesProject-Critical dependency Spring-cloud-starter-zu
1,orange Gateway
Orange is a openresty-based API Gateway. In addition to the basic functions of nginx, it can also be used for API monitoring, access control (authentication, WAF), traffic screening, access speed limit, AB test, dynamic shunt and so on. It has the following characteristics:Provides a set of defau
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.