dart-memory

Original：🇺🇸 English

Translated

Professional memory management for mobile applications, focusing on resource disposal, garbage collection pressure, and large asset handling.

3installs

Added on2026-03-10

NPX Install

npx skill4agent add dhruvanbhalara/skills dart-memory

Mobile devices have limited RAM. Efficient memory management is critical to prevent crashes and ensure a smooth user experience.

Explicit Disposal: Always close

StreamController

,

Timer

,

FocusNode

, and

ChangeNotifier

in the

dispose()

method.

Late Initialization: Use
```
late
```
to delay object creation until it's actually needed, reducing initial memory footprint.

Generational GC: Dart's GC is optimized for short-lived objects. However, creating thousands of objects in a single frame can still cause jank.
Object Re-use: Avoid creating new objects in
```
build()
```
or high-frequency loops. Reuse data structures where possible.
Large Collections: Clearing a large list (
```
list.clear()
```
) is better than re-assigning it to a new list if the list itself is long-lived.

Isolates: Use
```
Isolate.run()
```
for heavy computations (JSON parsing > 1MB, image processing). This keeps the main thread free and prevents UI freezes.
Image Memory: Use
```
cacheWidth
```
and
```
cacheHeight
```
in
```
Image.network
```
or
```
Image.asset
```
to avoid loading high-resolution images into memory at full size.
Memory Leaks: Use the DevTools Memory View to identify "leaking" objects that stay in the heap after their context (like a screen) is closed.

Pagination: Never load entire datasets into memory. Use server-side or local database pagination (Isar, SQLite).
Streaming: For large files or real-time data, use
```
Stream
```
to process data in chunks rather than buffering the entire content in memory.