The aforementioned libraries only solve for part of the equation and everything else is solved with that aforementioned spaghetti code. An optional domain layer for the reusable bits between the UI layer and the data layer.A data layer that includes repositories for fetching and caching and data sources that handle synchronizing and updating server state.A UI layer with views for the UI and state holder classes (like Controllers in MVC) that manage remote state and networking state.It demonstrates a common architectural pattern in Flutter: The previous figure is a modified version of Android's Architecture Component diagrams. Architecture in FlutterĪpplication architecture in Flutter is what we have been implementing manually for years using endless bowls of async-spaghetti code to quote TanStack's introduction. Tinkering and stepping outside your comfort zone is rewarding at any experience level. Another state management library introduced to help facilitate application architecture. My view of application architecture would still be stunted by my belief that Riverpod was just Provider 2.0, not too dissimilar from Scoped Model, Bloc, GetX, and all the libraries that preceded it. Had the team not made that initial decision, my approach to building Flutter applications would still be limited to the status quo. What is important about this long preamble isn't just what is coming in Riverpod. This article is definitely about Flutter, not React. That experience became the impetus for how I view the current & future state of Riverpod. In doing so, I devoted less time to solving architecture problems and was able to focus on solving business problems. In the following months I would use React Query heavily. One major difference was that platform-agnostic nature: any Promise could be considered a query. The concepts of TanStack Query are not new - they were introduced to the React community in part by Apollo GraphQL. While building out the MVP and researching some of the more recent advancements of React, I stumbled upon React Query (now TanStack Query) - a data-fetching library that handles fetching, caching, synchronizing and updating server state. ![]() I had just started building a greenfield application for a startup, and during our discovery phase, we decided to build the Minimum Viable Product in React instead of Flutter. Localized strings can be accessed through the S class instance like that: S.of(context).loadProducts.The year was 2021. The app uses flutter_localization and flutter_intl means for localization purposes instead of hardcoded strings right in the Dart codebase. What about patterns: in the app have been applied common OOP, Clean Architecture, Repository, BLoC patterns, as well as well-known S.O.L.I.D principles, and KISS, YAGNI, DRY practices for the clean code in conjunctions with dartfmt. And it allows eliminating redundant XxxBlocState and XxxBlocEvent classes because SingleBloc has a single event and should implement only single responsibility. Also, it has an extended state with separated data and error subjects (in the app source code you will get why it's needed). One special component of mine is SingleBloc which extends the original Bloc class and propagates the Single Responsibility Principle.
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