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[🐛] Performance Issue: MessageList Component Re-render Behavior

Aperta
#2,873 16 commenti 2 reazioni 0 assegnatari Vedi su GitHub

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Valutazione

Difficoltà
4/5
Tempo stimato
3-5 giorni
Idoneità per principianti
25/100
Tipo di issue
Bug
Chiarezza
Da chiarire
Stato di attività
Ferma
Stack tecnologico
react-native, typescript
Ambito
frontend, mobile

Direzione di ricerca

Inizia da package/src/components/MessageList/MessageList.tsx intorno alla riga 658 e riproduci il comportamento segnalato usando come riferimento la registrazione allegata di DevTools Profiler. Confronta gli aggiornamenti dell’elenco e lo scorrimento, quindi determina il comportamento atteso del rerendering per gli elenchi grandi o aggiornati frequentemente. Done deve includere una diagnosi riproducibile e un risultato delle prestazioni chiaramente convalidato.

Scritto dal modello di indicizzazione a partire dal testo della issue.

Descrizione

Needs Triaging

Issue

Hello! 👋 In our React Native app, we are using the GetStream library and have encountered a performance issue with the MessageList component. It appears to rerender all the messages in the list on every change to the list data (e.g., adding new messages or updating existing ones). Additionally, during scrolling, we’ve observed that the entire list sometimes rerenders continuously, further impacting performance. This behavior leads to noticeable lag and reduced app performance, especially when working with a large dataset or frequent updates to the message list. We have tested the component using the default settings without overriding any internal components, but the issue persists.

We have noticed that the component seems to lack perf optimizations, such as the use of useMemo or useCallback. Could you provide any information about the expected performance of the MessageList component? Are there existing optimizations to address these issues, or are there plans to improve its performance in future updates?

Additionally, I am attaching a recording from the simulator showing an example of the application re-rendering where MessageList is used, with a visualization using the DevTools Profiler:
console.log for message Message YYY rendered X times is added here.

https://github.com/user-attachments/assets/23846116-cce6-4b0f-a535-2acac872e2ee

Any guidance or recommendations would be greatly appreciated. 🙇

Steps to reproduce

Steps to reproduce the behavior:

  1. Go to '...'
  2. Click on '....'
  3. Scroll down to '....'
  4. See error
    etc...
Expected behavior

Project Related Information

Customization

Click To Expand

# N/A
Offline support
  • I have enabled offline support.
  • The feature I'm having does not occur when offline support is disabled. (stripe out if not applicable)

Environment

Click To Expand

package.json:
# N/A

react-native info output:

 OUTPUT GOES HERE
  • Platform that you're experiencing the issue on:
    • iOS
    • Android
    • iOS but have not tested behavior on Android
    • Android but have not tested behavior on iOS
    • Both
  • stream-chat-react-native version you're using that has this issue:
    • e.g. 5.4.3
  • Device/Emulator info:
    • I am using a physical device
    • OS version: e.g. Android 10
    • Device/Emulator: e.g. iPhone 11
Additional context
Screenshots

Click To Expand


Lingua principale
TypeScript
Stelle
1.2k
Fork
378
Merge medio
1g 2h
PR unite (30g)
23

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