Startup Performance

Miniapp startup is a critical part of the user experience. Long startup times lead to user churn and negatively impact retention.

What Is Miniapp Startup

Miniapp startup has two types:

Type	Definition	Characteristics
Cold start	First open, or re-open after the system has destroyed the miniapp	Requires the full startup flow; takes longer
Warm start	Miniapp is already running in the background and user returns	No reload needed; nearly instant

The startup performance optimization discussed in this section focuses on the cold start scenario.

The miniapp startup process begins when the user opens the miniapp and ends when the home page finishes rendering.

Scenario	Recommended Time
First open (with download)	< 3000ms
Subsequent opens (using local cache)	< 1500ms

The following phases in the miniapp startup flow are developer-controllable:

Direction	Goal	Details
Package size optimization	Reduce download size and speed up download	Package Size Optimization
Code injection optimization	Reduce code execution time	Code Injection Optimization
First screen render optimization	Speed up page content display	First Screen Render Optimization

For complete startup flow details, see Launch Process.