Mini Program--Independent Subcontracting & Subcontracting Pre-download

1. What is independent subcontracting

Independent subcontracting is essentially subcontracting, but it is relatively clear and can be run independently of the main package and other subcontracting

2. The difference between independent subcontracting and ordinary subcontracting

The main difference: whether it depends on the main package to run

• Ordinary subpackage depends on the main package
• Independent subpackage can run independently without downloading the main package

3. Application scenarios of independent subcontracting

Developers can configure certain pages with certain functional independence to independent as neededIn subcontracting.Here's why:

• When the applet restarts from the normal subpackage page, the main package needs to be downloaded first
• The independent subcontracting can run without relying on the main package, which can greatly improve the startup speed of the subcontracting page

4. Configuration method of independent subcontracting ("independent": true)

"subpackages": [{"root": "packageA","name": "p1","pages": ["pages/cat","pages/dog"]},{"root": "packageB","name": "p2","pages": ["pages/apple","pages/banana"],"independent": true}],

5. Citation principles

Independent subcontracting, common subcontracting and main subcontracting are isolated from each other and cannot reference each other's resources, for example:

• Main packageCannot referenceprivate resources of independent subcontracts
• Between independent subcontracts, cannot refer to each otherprivate resources
• Between independent subcontracting and common subcontracting, cannot refer to each otherprivate resources
• Special attention: public resources in the main package cannot be referenced in independent subcontracts

6.1 Subpackage pre-download refers to: when entering a certain page of the applet, The framework automatically pre-downloads the sub-packages that may be required, therebyImprove the startup speed when entering the subsequent subcontracting page

6.2 Configuring subpackage pre-download

The behavior of pre-downloading subpackages, will be triggered when entering the specified page, in app.json, use preloadRule section point to define the pre-download rules for sub-packages, example code:

 "preloadRule": {"pages/contact/contact":{"network": "all",//Indicates pre-downloading in the specified network mode, the optional values ​​are all (unlimited network) and WiFi (download only in WiFi mode)"packages": ["packageA"]//packages indicates which subpackages are pre-downloaded after entering the page//You can specify which subpackages are pre-downloaded by root or name}},

6.3 Restrictions on subpackage pre-download

Pages in the same subpackage have a common pre-download size limit of 2M