Communication among microservices

  • How communication takes place between microservices?

    The most popular protocol for implementing synchronous microservice communication is HTTP.
    HTTP is a popular choice because servers for handling HTTP requests are widespread in nearly every language, as are libraries for making and decoding HTTP requests..

  • How microservices can communicate with each other?

    The most popular protocol for implementing synchronous microservice communication is HTTP.
    HTTP is a popular choice because servers for handling HTTP requests are widespread in nearly every language, as are libraries for making and decoding HTTP requests..

  • What are the advantages of using messaging when deploying microservices?

    Once you've built microservices without servers, deployments onto servers, or installed software of any kind, you can use message queues to provide reliable, scalable serverless notifications, inter-process communications, and visibility of serverless functions and PaaS..

  • What is the communication style of microservices?

    Implement service-to-service authentication
    This means that each microservice should verify the identity and permissions of the other microservices it communicates with, and only grant access to authorized ones.
    There are different ways to achieve this, such as using API keys, tokens, or mutual TLS..

  • What is the communication style of microservices?

    The most popular protocol for implementing synchronous microservice communication is HTTP.
    HTTP is a popular choice because servers for handling HTTP requests are widespread in nearly every language, as are libraries for making and decoding HTTP requests..

  • What type of communication is possible between microservices?

    Synchronous versus asynchronous messaging.
    There are two basic messaging patterns that microservices can use to communicate with other microservices.
    Synchronous communication.
    In this pattern, a service calls an API that another service exposes, using a protocol such as HTTP or gRPC..

  • Why do microservices communicate with each other?

    Microservices typically have their own databases or data stores.
    For data consistency, microservices communicate with their respective data stores when they need to read or write data.
    This approach ensures that each service can manage its data independently without interfering with other services.Jul 21, 2023.

  • Implement service-to-service authentication
    This means that each microservice should verify the identity and permissions of the other microservices it communicates with, and only grant access to authorized ones.
    There are different ways to achieve this, such as using API keys, tokens, or mutual TLS.
  • Overall, synchronous communication is suitable for cases where immediate responses are critical, and microservices need to be tightly coupled, while asynchronous communication is beneficial for cases where decoupling, scalability, and fault tolerance are important, and delayed responses are acceptable trade-offs.
1. HTTP Communication: Microservices often communicate through the HTTP protocol, which allows them to interact with each other using standard HTTP methods like 'GET, POST, PUT, and DELETE. ' This 'RESTful API' communication ensures decoupled services and platform independence.
There are two basic messaging patterns that microservices can use to communicate with other microservices.
  • Synchronous communication. In this pattern, a service calls an API that another service exposes, using a protocol such as HTTP or gRPC.
  • Asynchronous message passing.
In a distributed system, multiple microservices communicate with each other. One failed microservice must not cause cascading failures to other microservices and bring down the entire system. A microservice needs to handle failures gracefully, recovering the last state before the failure and restarting successfully.
The most common type is single-receiver communication with a synchronous protocol like HTTP/HTTPS when invoking a regular Web API HTTP service. Microservices also typically use messaging protocols for asynchronous communication between microservices.
The most common type is single-receiver communication with a synchronous protocol like HTTP/HTTPS when invoking a regular Web API HTTP service. Microservices also typically use messaging protocols for asynchronous communication between microservices.

Can one microservice call another microservice?

Yes, one microservice can call another, but first, you have to define whether a communication is synchronous or asynchronous.
For web application communication, the HTTP protocol has been the standard for many years, and that is no different for microservices.

How to do authentication in microservices?

authentication - Checking if the person is someone who he really claims to be; you do this by providing a username + password. authorization - Checking if the person has the right to access some resource.
This is usually done by giving a token generated by the authentication process, or something like that.
The AuthBearer does both.
First, it creates a token when the user asks it to; and, when the microservices give it a token, it checks for authorization.

How to make microservices communicate?

Make HTTP Calls Across Microservice Using RestTemplate.
Normally, microservices interact over HTTP.
To achieve that, we need to create RestTemplate bean and then use it to communicate across the microservices.
To do that, follow the steps below:

  • Step 1:
  • Create a RestTemplate bean in the ms-teacher and ms-student services.
    This is simply a ..

    • What are the alternatives to microservices?

    Alternatives to Microservices.
    An alternative approach is macroservices, using chunks of previously-proven parts of the monolith, but bring legacy problems.
    These include:

  • code that is hard to read
  • or it may be difficult to get a workable public API
  • and testing and scaling-up may be challenging.

    • How to establish the right communication flow between microservices?

    There are several factors to determine before the right communication flow between microservices can be established

    Those factors are: Microservices communication can be set up as a stateless or stateful process

    This means it is possible to configure the communication between microservices as a synchronous and asynchronous process

    What communication patterns can be leveraged in a microservice architecture?

    Another communication pattern we can leverage in a microservice architecture is message-based communication

    Unlike HTTP communication, the services involved do not directly communicate with each other

    Instead, the services push messages to a message broker that other services subscribe to

    What type of communication does a microservice use?

    A microservice-based application will often use a combination of these communication styles

    The most common type is single-receiver communication with a synchronous protocol like HTTP/HTTPS when invoking a regular Web API HTTP service

    Microservices also typically use messaging protocols for asynchronous communication between microservices


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