spring api gateway example

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

service's Query method}To do this, of course, can run, but the maintenance of a large amount, the subsequent micro-services to add new methods, all need to manually add the appropriate method package at the gateway layer, and Spring cloud Zuul is a good solution to this problem, as follows:Zuul as gateway layer, itself is a micro-service, with other services ser

, 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,

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.

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

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

authentication, flow control, and shunt control. This section describes the following service management, and other features that will be introduced in the next few articlesService ManagementFor the service we need to manage the following actionsService machine: For the service deployment of the machine, we need the platform for management monitoring, if an exception occurs, through the API gateway to alar

: routes: ID: query_route uri:http: //example.org predicates: -Query=foo, Ba.If the request contains the foo query parameter whose value matches the BA, the route will match. RegExp, so bar and Baz match.3.10. remoteaddr Route predicate FactoryThe REMOTEADDR Route predicate factory uses a list of CIDR notation (IPV4 or IPV6) strings (The minimum value is 1), for example, 192.168.0.1/16 (where 192.168.0.1 is the IP addre

, 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

interface development and testing complexity of the micro-service application be reduced correspondingly.To enable validation of client requests in the API gateway, we will need to use another core feature of spring Cloud Zuul: Filters.Zuul allows developers to implement the interception and filtering of requests by defining filters on the

interface development and testing complexity of the micro-service application be reduced correspondingly.To enable validation of client requests in the API gateway, we will need to use another core feature of spring Cloud Zuul: Filters.Zuul allows developers to implement the interception and filtering of requests by defining filters on the