Microservice Design Pattern and Priniciples - PowerPoint PPT Presentation

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Microservice Design Pattern and Priniciples

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Title: Microservice Design Pattern and Priniciples


1
Design Principles and Patterns for Microservices
  • Design Principles for Microservice Architecture
  • Microservice Design Patterns

2
Microservices
  • Microservices, also referred to as microservice
    architecture is an architectural design that
    allows an application to be structured as a
    collection of smaller, self-contained services
    that are built around a business domain. Each
    service of microservice Architecture is
    self-contained and can implement only one
    specific business capability.

3
Design Principles for Microservice Architecture
  • The following are the design principles for
    Microservices
  • Services that are self-contained and autonomous
  • Scalability
  • Load Balancing in Real-Time
  • Auto-Provisioning
  • Decentralization
  • Resilient Services
  • Availability
  • DevOps integration ensures continuous delivery.
  • Continuous Monitoring and Seamless API
    Integration
  • Isolation from Setbacks

4
Microservice Design Patterns
  • Aggregator Pattern In the world of computing
    Aggregators is a program or website that stores
    and displays relevant elements of data. This is
    why Microservices patterns Aggregator is a basic
    website that calls different services to get the
    information required or to achieve the desired
    function. The source of output is split into a
    monolithic system broken down into microservices
    this approach is beneficial when combing data
    from various services. Both services have their
    own databases, and an aggregator with a unique
    transaction ID will take data from each
    microservice, use business logic, and finally
    publish it to an endpoint to rest.

5
  • Asynchronous Messaging Each of the services
    within this kind of Microservices Design Pattern
    is able to communicate with one another however
    they don't need to talk in a sequential
    manner. Therefore, look at three of the services
    which are Service A, B as well as Service C. A
    client's request may be sent directly via
    Services C or Service B simultaneously. They will
    route the request to the queue. Apart from that,
    the request may be directed to Service A and the
    reply is not required to be given to the same
    company that the request was made.

6
  • API Gateway API gateways have the capability of
    changing protocol requests between different
    types. Similarly, it can offload the
    microservice's authentication/authorization
    responsibilities. API Gateway also serves as a
    gateway to all microservices and creates specific
    APIs that are suited to various kinds of clients.
    Microservices utilize Service Discovery as a
    guide to decide on the best route to communicate
    with each other. Microservices communicate with
    each other through the use of a stateless server
    like an HTTP request/message bus.

7
  • Event Sourcing This design style creates events
    when the state of the application is
    changed. Furthermore, the events are stored in a
    series of events, which helps developers in
    determining what changes were made at the
    time. This means that it is possible to modify
    the state of your application to reflect previous
    changes. Changes in the state of your application
    will be seen on the display layer after the
    events have been published.

8
  • Command Query Responsibility Segregator The
    database-per-service model, or the shared model
    of a database for each service employed in all
    microservices designs. But, since access to data
    is restricted to one database in the model of a
    database per service and we cannot implement
    queries. In this scenario Command, segregator
    pattern Query Responsibility can be
    utilized. This application is split into two
    components based on this pattern which are
    Command and the Query. The command component will
    manage any request (such as create deletion,
    create, and delete) and the query portion will
    manage materialized views.

9
  • Shared Data or Database The Microservice API is
    able to access databases or shared data for each
    service. This means that each microservice will
    be assigned its own unique database ID which
    blocks other applications in the system from
    accessing the database. In addition, you can also
    select shared databases to connect more than one
    microservice's database to address the problem of
    denormalization. This can help with data
    collection for monolithic apps which have been
    split into microservices. But, databases must be
    limited to 3 microservices. Otherwise, scaling
    these services is difficult.
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