Reducing Load Times on Low-End Devices in RN - Mo Khazali - React Native London February 20223

Mo Khazali: Reducing Load Times on Low-End Devices in RN

There are over 24,000 distinct Android phone models - some have really awful hardware. This makes optimisation for Android apps particularly painful at times. In this talk, we’ll go over where some common performance pitfalls happen and how you can take some steps to improve your React Native app’s performance for low-end legacy devices.

[00:00:00] Introduction
[00:00:30] Background
[00:01:10] Example
[00:02:35] User Acquisition
[00:03:32] Performance
[00:04:20] Sustainability
[00:04:52] OS vs Hardware
[00:05:49] Deceiving New Phones
[00:07:23] Batching Requests to the Backend
[00:08:38] Optimising React Navigation
[00:10:59] Best Practices when Nesting
[00:12:38] Unmounting Expensive Elements after Navigating Away
[00:13:19] Used Focus Effect Hook
[00:14:38] A Hacked Solution...
[00:15:17] Contexts are inefficient
[00:16:42] Wizard Form Pattern
[00:18:43] Tools / Libraries on the Horizon
[00:22:28] Summary

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