platform
MediatR
platform | MediatR | |
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64 | 53 | |
7,899 | 10,641 | |
0.4% | - | |
9.1 | 5.9 | |
4 days ago | 8 days ago | |
TypeScript | C# | |
GNU General Public License v3.0 or later | Apache License 2.0 |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
platform
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Simplifying Angular State Management Using NgRx SignalState
NgRx is the standard library for state management in Angular applications. With NgRx v14, many of the complex APIs following the Redux pattern have been greatly simplified. For example, ActionGroups make it easier to define new actions. However, the use of the Redux pattern is by no means easy and discourages many developers.
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Here's how NgRx selectors actually work internally
I ran into this question question on the NgRx GitHub discussion threads which asked:
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Using Angular Signals for Global State
In an application that I’m working on, before Angular 16 shipped, I was using a custom StoreService to hold global application state. I’ve tried libraries like NgRx and Akita to manage global state, but found them to be way too heavy-handed for what I wanted (not saying ANYTHING negative towards these libraries; not every tool is right for every job, and the authors of these libraries would probably be the first to tell you that). This custom StoreService was created using RxJS, and looked like this:
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Episode 23/27: NgRx 16.1 & Signal Store, Jest, Cypress, Nx
RFC Signal Store
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Fullstack Angular with Analog 🚀
If you liked this, click the ❤️ so other people will see it. Follow me on Twitter and subscribe to my YouTube Channel for content on Angular, Analog, NgRx, and more!
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A better architecture for your Angular projects
The store can be implemented using any technology. You can either use a library like NgRx or NGXS. Another solution is to create your own store using a BehaviorSubject.
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Navigation ID is not equal to the current router navigation id error
I'm using @ngrx/router-store in my Angularv5 app and I recently started running into a an error: Navigation ID X is not equal to the current navigation id Y (where X and Y are integers).
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Share mistakes you did with Angular and you want other devs not do it again
Not agree, NgRx and redux pattern helps a lot to keep the code clean, I do agree that maybe NgRx add many files and could become in boilperplate for simple staff, I think with signals this approach will change, there is already an open discussion about this https://github.com/ngrx/platform/discussions/3796
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How can I stop API requests from blocking rendering?
For code sample and how to architect these things : https://ngrx.io
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From NgRx ComponentStore to SignalStore: the key takeaways from my demo project
The NgRx team and Marko Stanimirović opened a new RFC (Request for Comments) for a signal-based state management solution, SignalStore. It has a similar approach to @ngrx/component-store. The initial prototype with the API documentation is available in the NgRx SignalStore playground repo.
MediatR
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The Monad Invasion - Part 2: Monads in Action!
You probably noticed that .SetName() returns a Either. You may have come across Unit in libraries like MediatR or Language-Ext. It's a simple construct representing a type with only one possible value. We use it as a placeholder for operations that do not return a value but may return another state. In our example, .SetName() is a Command that does not return a value but may fail. Therefore, the monad Either carries two possible states: Right (without value) or Left (with an Error).
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How small is the smallest .NET Hello World binary?
The widely used MediatR library[0] could be used to do that as well, just FYI.
[0]: https://github.com/jbogard/MediatR
- Cannot use disposed service
- Exception handling between controller and service
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CQRS: How to handle duplicate queries inside a CommandHandler
Hope this GH issue shed some light on why injecting handler inside another handler is not good https://github.com/jbogard/MediatR/issues/400
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Is MediatR the only real CQRS solution for .Net?
From: https://github.com/jbogard/MediatR
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Easiest way to build the fastest REST API in C# and .NET 7 using CQRS
I gave it a go and I was impressed how easy and fast it was to set it all up. Since I'm not a big fan of REPR pattern almost all my projects are using CQRS pattern with a help of MediatR ](https://github.com/jbogard/MediatR) I immediately started going over something similar that Fast Endpoints offer which is a command bus.
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MVVM Question: How do you manage the interaction between Model and ViewModel?
I'd use a dedicated event bus based on Reactive Extensions or MediatR to publish domain events from your domain services. This probably doesn't solve all your ViewModel update problems as is, maybe you need to revise the granularity (maybe you can have smaller ViewModels that refresh single property that exposes the Model) and lifespan (sometimes you can create a ViewModel, make it perform it's task and then discard it completely) of your ViewModels.
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Async Methods after setting a property.
If you're finding yourself in a situation where you need to turn this behavior into a pattern because there are a lot of View Models that need to execute async business logic in response to some changes, I'd go with something like MediatR or Reactive Extensions. The idea is, again, that some other, probably business-level, component listens to changes in a decoupled way (that means it doesn't subscribe directly to your View Model, but to an event bus instead). View Model publishes change events to the event bus, and business-component reacts to these events by executing the business logic.
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I don't get why I should use Redux
What people really want is to design the logic of an app independently from the component hierarchy. That means you need to store state somewhere other than the components and you need to dispatch events that are not attached to the component hierarchy. Also, a one way data flow has well known benefits as described by things like CQRS, RabbitMQ, and MediatR.
What are some alternatives?
ngrx-data-pagination
Mediator.Net - A simple mediator for .Net for sending command, publishing event and request response with pipelines supported
rtk-query - Data fetching and caching addon for Redux Toolkit
RabbitMQ - Open source RabbitMQ: core server and tier 1 (built-in) plugins
rx-query
Polly - Polly is a .NET resilience and transient-fault-handling library that allows developers to express policies such as Retry, Circuit Breaker, Timeout, Bulkhead Isolation, and Fallback in a fluent and thread-safe manner. From version 6.0.1, Polly targets .NET Standard 1.1 and 2.0+.
ngrx-forms - Enhance your forms in Angular applications with the power of ngrx
Brighter - A framework for building messaging apps with .NET and C#.
ngrx-immer - Immer wrappers around NgRx methods createReducer, on, and ComponentStore
ApiEndpoints - A project for supporting API Endpoints in ASP.NET Core web applications.
redux-devtools-extension - Redux DevTools extension.
FluentValidation - A popular .NET validation library for building strongly-typed validation rules.