The software development of Internet companies is very different from traditional software development in terms of management mode. The technical department receives the needs of other departments of the company, and constantly iteratively updates and improves the entire platform function to meet the daily operation needs of platform products. In this process, the R&D team needs to carry out rapid delivery. The general cycle is one week. If it is faster, it may require a functional iterative update in two or three days.
Recently, I read some articles about mobile development, and many of them repeatedly talked about the concept of dynamic update. In fact, another way of saying it is hot update. Since many places are talking about it, as a "laying flat" developer, you must understand it further. Specific principles and models.
Dynamic mechanism and technical principles
The dynamic R&D model is a cloud-based mobile application development method, which mainly enables developers to quickly build and release multi-terminal mobile applications, realize agile iteration and hot update of business, and improve user experience and operational efficiency. The principle of implementing dynamic update can be divided into two parts: application update mechanism and resource update mechanism.
1. Application update mechanism
The application update mechanism refers to how to update the code logic and business functions of the application. Typically, an application update includes two parts: client-side code update and server-side data update.
1) Client code update
It refers to the update of the logic code and business function code of the application program, which is realized through the hot update mechanism of the application program. When the application is started, it will check whether there is a new version of the client code on the server. If so, it will download the new code and replace it through the hot update mechanism, so as to realize the update of the application.
The more common one is that when we use the WeChat applet, the version update will remind us to reopen it.
2) Server data update
Refers to the update of the data required by the application. Usually, the server-side data update is implemented through the data synchronization mechanism of the application. When the application is started, it will check whether there is new data on the server, and if there is, it will be updated through the data synchronization mechanism, so as to realize the update of the application.
2. Resource update mechanism
The resource update mechanism refers to how to update the resource files required by the application, such as pictures, audio, video, etc. Usually, the resource update mechanism is also implemented through the hot update mechanism of the application.
There are generally two ways to update resource files: incremental update and full update. Incremental update refers to updating only part of the resource files, such as updating only a certain picture or audio file, while full update refers to updating all resource files.
Glory of Kings is the incremental update mechanism used.
In practical applications, the advantages of incremental update are fast update speed and low network traffic, but the disadvantage is that developers need to manually maintain version management. The advantage of full update is that version management is simple, but the disadvantage is that the update speed is slow and the network traffic is large.
In short, the principle behind the dynamic update of the mobile terminal mainly involves the application program update mechanism and the resource update mechanism. In practical applications, it is necessary to select an appropriate update method according to specific business requirements and technical conditions to achieve efficient update and optimization of applications.
The value of dynamic update mode
The main value is reflected in the following aspects:
- Quickly respond to market demand: Quickly respond to market demand and user feedback, and improve product quality and user experience through continuous iteration and optimization.
- Reduce development costs: Realize hot updates of applications through remote updates, thereby reducing maintenance and development costs of applications.
- Improve application stability and security: Fix bugs and problems in applications in a timely manner through remote updates, thereby improving application stability and security.
- Adapt to different platforms and devices: HTML5 and applet containers can be used to adapt to different platforms and devices, thereby improving the accessibility and usability of the application.
It is also mentioned above that the dynamic R&D mode of the mobile terminal is a method of using HTML or small programs to realize the rapid development and update of mobile applications. The following will also talk about their specific situations.
HTML 5 mode
Everyone is too familiar with HTML5, so I won’t introduce it too much. It supports the development of web application programs on multiple devices and platforms, and provides developers with a simpler, more flexible and cross-platform development method. In the dynamic research and development mode of the mobile terminal, HTML5 is widely used, mainly in the following aspects:
- Cross-platform support: HTML5 can run on multiple platforms, including iOS, Android, and Windows, etc., which greatly improves the accessibility and usability of applications.
- Ease of use: HTML5 development tools and technologies are relatively easy to master and understand, and open source tool libraries and frameworks can be used during the development process to improve efficiency.
- Hot update: HTML5 applications can implement hot update of the application through remote updates, so that users' needs and feedback can be quickly responded to, and the maintenance cost of the application can be reduced at the same time.
However, HTML5 also has some disadvantages, such as poor performance and low security, which may affect the user experience and security performance of applications.
applet mode
Everyone is familiar with mini-programs, but you may wonder that mini-programs can only run in super apps such as WeChat and Alipay, and have little to do with our own apps, but in fact, we can also quickly run mini-programs in our own apps , For example, it can be realized by integrating the FinClip SDK , and then the applet can be directly uploaded and unloaded through a management background.
The above technology is also called applet container, which is a technology that embeds applets into native applications. It can use a special runtime environment to execute applet code, and at the same time provide a call interface with native capabilities, so that applets can access Camera, positioning, address book and other functions of the device.
- Cross-platform support: Applet containers can run on multiple platforms, including iOS, Android, and Windows, which greatly improves the accessibility and usability of applications.
- Lightweight application: The applet container can provide a fast and efficient application development method, and can also reduce the size and resource occupation of the application, thereby improving the performance and response speed of the application.
- Hot update: The applet container can realize the hot update of the application through remote update, so that it can quickly respond to the user's needs and feedback, and reduce the maintenance cost of the application.
The shortcomings of the applet container are mainly in the development aspect. It is necessary to master certain front-end technology and applet development specifications. Limited by the applet development specifications and platform restrictions, some advanced features and functions may not be realized, but the introduction of applets in your own App This problem can then be circumvented.
In short, the dynamic R&D model has important value and role in the development of mobile applications, which can help enterprises quickly respond to market demand, reduce development costs, improve application stability and security, and adapt to different platforms and devices.
As a developer, it is also of certain value to master the technologies and methods of the dynamic R&D model. Understanding at least one technical principle can improve one's technical level and competitiveness.