When a Flutter app works with hundreds or thousands of records, loading everything in a single API request is usually a bad idea. It increases response size, consumes more memory, slows JSON parsing, and makes the first screen load slower. Pagination solves this problem by loading data in smaller batches. For example, an app can […]
API error handling is one of the most important parts of building a reliable Flutter application. A basic API request may look like this: Technically, this catches an error. However, it does not provide a good production architecture. Your application still needs to understand: A better Flutter application converts low-level networking failures into predictable application […]
Dart makes asynchronous programming look simple: However, several different mechanisms are working behind that small piece of code. To understand Dart concurrency properly, you need to understand: The most important idea is this: Dart can handle many asynchronous operations concurrently even when Dart code inside a single isolate executes one operation at a time. Concurrency […]
Asynchronous programming is a core part of Dart and Flutter development. Whether you are calling an API, reading data from a database, listening to authentication changes, tracking location updates, or receiving real-time messages, you will frequently work with two important Dart types: and: Both represent asynchronous operations, but they solve different problems. The simplest difference […]
Fetching data from an API is one of the most common tasks in Flutter applications. Most responses are small enough that you can decode them without thinking about performance. However, the situation changes when an API returns a very large JSON response. Consider: This looks perfectly normal. The HTTP request is asynchronous, so you might […]
Dart isolates allow you to move CPU-intensive work away from your application’s main isolate. This can help keep a Flutter application’s animations, scrolling, and user interactions responsive while expensive calculations happen independently. Two important APIs you will encounter are: and: Both can execute Dart code in another isolate, but they are designed for different situations. […]
Flutter applications usually run Dart code on a single main isolate. For normal UI work, API calls, navigation, state management, and small calculations, this works perfectly well. Problems begin when your application performs expensive CPU-bound work on the main isolate. For example: If performHeavyCalculation() takes hundreds of milliseconds, the main isolate cannot process UI work […]
Modern applications need to know more than just what data currently looks like. They often need to answer questions such as: This is where audit logs become important. An audit log provides a historical record of important actions performed inside an application. When designed correctly, audit logging can improve security, debugging, compliance, accountability, and operational […]
When you write Flutter code, you usually think in terms of widgets: However, Flutter does much more behind the scenes before that Text appears as pixels on the screen. A simplified rendering pipeline looks like this: Understanding these stages is extremely useful when optimizing Flutter applications. For example, if an application is janky, the problem […]
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