digital-restaurant | Event sourcing . | Microservice library

 by   idugalic Kotlin Version: 1.0.0 License: Apache-2.0

kandi X-RAY | digital-restaurant Summary

kandi X-RAY | digital-restaurant Summary

digital-restaurant is a Kotlin library typically used in Architecture, Microservice, Spring Boot, Docker, Kafka, RabbitMQ applications. digital-restaurant has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

'd-restaurant' is an example of an application that is built using Event Sourcing and CQRS. The application is written in Kotlin, and uses Spring Boot. It is built using Axon, which is end-to-end development and infrastructure platform for smoothly evolving event-driven microservices focused on CQRS and Event Sourcing patterns.
Support
    Quality
      Security
        License
          Reuse

            kandi-support Support

              digital-restaurant has a low active ecosystem.
              It has 279 star(s) with 80 fork(s). There are 21 watchers for this library.
              OutlinedDot
              It had no major release in the last 12 months.
              There are 0 open issues and 1 have been closed. On average issues are closed in 4 days. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of digital-restaurant is 1.0.0

            kandi-Quality Quality

              digital-restaurant has no bugs reported.

            kandi-Security Security

              digital-restaurant has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

            kandi-License License

              digital-restaurant is licensed under the Apache-2.0 License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              digital-restaurant releases are available to install and integrate.

            Top functions reviewed by kandi - BETA

            kandi's functional review helps you automatically verify the functionalities of the libraries and avoid rework.
            Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of digital-restaurant
            Get all kandi verified functions for this library.

            digital-restaurant Key Features

            No Key Features are available at this moment for digital-restaurant.

            digital-restaurant Examples and Code Snippets

            No Code Snippets are available at this moment for digital-restaurant.

            Community Discussions

            Trending Discussions on digital-restaurant

            QUESTION

            Return entity updated by axon command
            Asked 2019-Sep-10 at 16:10

            What is the best way to get the updated representation of an entity after mutating it with a command.

            For example, lets say I have a project like digital-restaurant and I want to be able to update a field on the restaurant and return it's current state to the client making the update (to retrieve any modifications by different processes).

            When a restaurant is created, it is easy to retrieve the current state (ie: the projection representation) after dispatching the create command by subscribing to a FindRestaurantQuery and waiting until a record is returned (see Restaurant CommandController)

            However, it isn't so simple to detect when the result of an UpdateCommand has been applied to the projection. For example, if we use the same trick and subscribe to the FindRestaurantQuery, we will be notified if the restaurant has been modified, but it may not be our command that triggered the modification (in the case where multiple processes are concurrently issuing update commands).

            There seems to be two obvious ways to detect when a given update command has been applied to the projection:

            1. Have a unique ID associated with every update command.
              • Subscribe to a query that is updated when the command ID has been applied to the projection.
              • Propagate the unique ID to the event that is applied by the aggregate
              • When the projection receives the event, it can notify the query listener with the current state
            2. Before dispatching an update command, query the existing state of the projection
              • Calculate the destination state given the contents of the update command

            In the case of (1): is there any situation (eg: batching / snapshotting) where the event carrying the unique ID may be skipped over somehow, preventing the query listener from being notified?

            Is there a more reliable / more idiomatic way to accomplish this use case?

            Axon 4 with Spring boot.

            ...

            ANSWER

            Answered 2019-Sep-10 at 16:10

            Although fully asynchronous designs may be preferable for a number of reasons, it is a common scenario that back-end teams are forced to provide synchronous REST API on top of asynchronous CQRS+ES back-ends.

            The part of the demo application that is trying to solve this problem is located here https://github.com/idugalic/digital-restaurant/tree/master/drestaurant-apps/drestaurant-monolith-rest

            The case you are mentioning is totally valid.

            I would go with the option 1.

            My only concern is that you have to introduce new unique ID associated with every update command attribute to the domain (events). This ID attribute does not have any Domain/Business value by my opinion. There is an Audit(who, when) attribute associated to every event already, and maybe you can use that to correlate commands and subscriptions. I believe that there is more value in this solution (identity is part of domain), if this is not to relaxing for your case. Please note that Queries have to be extended with Audit in this case (you will know who requested the Query)

            Source https://stackoverflow.com/questions/57873076

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            No vulnerabilities reported

            Install digital-restaurant

            You can download it from GitHub.

            Support

            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
            Find more information at:

            Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items

            Find more libraries
            CLONE
          • HTTPS

            https://github.com/idugalic/digital-restaurant.git

          • CLI

            gh repo clone idugalic/digital-restaurant

          • sshUrl

            git@github.com:idugalic/digital-restaurant.git

          • Stay Updated

            Subscribe to our newsletter for trending solutions and developer bootcamps

            Agree to Sign up and Terms & Conditions

            Share this Page

            share link