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How to handle HTTP requests in a microservice?
In this case, you can introduce asynchrony. The gateway service (with which UI interacts directly) can orchestrate the asynchronous processing (waits for complete events and so on), and when ready, it can communicate back to the UI. I have seen UI using SignalR in such cases, and the gateway service was an API which accepted socket connections.
Which is an example of a microservice service?
Microservices typically provide fine-grained APIs, which means that clients need to interact with multiple services. For example, as described above, a client needing the details for a product needs to fetch data from numerous services. Different clients need different data.
How is the rest protocol used in microservices?
Services needs to discover locations of service instances. One to one Mapping between services. Rest used HTTP which is general purpose protocol built on top of TCP/IP which adds enormous amount of overhead when using it to pass messages.
What makes microservices different from other API gateways?
Forces The granularity of APIs provided by microservices is often different than what a client needs. Microservices typically provide fine-grained APIs, which means that clients need to interact with multiple services. Different clients need different data.
How does a microservice work with other applications?
It might also integrate with other applications via either web services or a message broker. The application handles requests (HTTP requests and messages) by executing business logic; accessing a database; exchanging messages with other systems; and returning a HTML/JSON/XML response.
How does synchronous communication work in a microservice?
As shown in the above diagram, in synchronous communication a “chain” of requests is created between microservices while serving the client request. This is an anti-pattern. In asynchronous communication microservices use asynchronous messages or http polling to communicate with other microservices, but the client request is served right away.
How is the API gateway pattern used in microservice architecture?
The API Gateway pattern defines how clients access the services in a microservice architecture. The Client-side Discovery and Server-side Discovery patterns are used to route requests for a client to an available service instance in a microservice architecture.