Code tuning methods and techniques in mall development

With the rise and development of Internet e-commerce, shopping malls have become a very popular way of shopping. In order to meet people's needs, more and more companies are trying to develop their own mall websites or APPs. However, during the mall development process, developers often face some code optimization problems. This article will introduce some code tuning methods and techniques in mall development.

1. Front-end code optimization

In mall development, front-end code optimization is a very important part. The following are some commonly used front-end code optimization methods:

1.1 Reduce HTTP requests

In mall development, each HTTP request will generate additional overhead and affect the performance of the website. Therefore, reducing HTTP requests is a very important step. You can reduce HTTP requests in the following ways:

Merge CSS and JS files to reduce the number of HTTP requests.
Use CSS Sprites technology to merge multiple small pictures into one large picture to reduce the number of HTTP requests.
Use image lazy loading technology to load images in the visible area of ​​the page first, and then load images in the lower area to reduce the number of HTTP requests.

1.2 Compressed files

In mall development, the size of the file will affect the performance of the website. Therefore, compressing files is a very necessary step. Files can be compressed in the following ways:

Use Gzip compression technology to compress the files before sending them to the browser to reduce transmission time and size.
Use JS compression tool to remove spaces, comments and other useless characters in JS files to reduce the size of JS files.
Use CSS compression tools to remove spaces, comments and other useless characters in CSS files to reduce the size of CSS files.

1.3 Reduce DOM operations

In mall development, the number of DOM operations will affect the performance of the website. Therefore, reducing DOM operations is a very important step. DOM operations can be reduced in the following ways:

Gather DOM operations together to avoid operating the same DOM element multiple times.
Use event delegation technology to delegate events to parent elements to avoid event binding for each child element.
Use innerHTML instead of DOM operations to insert multiple elements at one time and reduce the number of DOM operations.

2. Back-end code optimization

In mall development, the optimization of back-end code is also very important. The following are some commonly used back-end code optimization methods:

2.1 Reduce the number of database queries

In mall development, the number of database queries will affect the performance of the website. Therefore, reducing the number of database queries is a very important step. You can reduce the number of database queries in the following ways:

Use caching to cache frequently used data to avoid repeated queries.
Use batch query to query multiple data at one time to reduce the number of queries.

2.2 Code Optimization

In mall development, code optimization is also very important. The following are some common code optimization methods:

Use asynchronous programming to avoid blocking.
Use object pool to avoid frequent creation and destruction of objects.
Use lazy loading to load modules on demand.

2.3 Network Optimization

In mall development, network optimization is also very important. The following are some commonly used network optimization methods:

Use CDN acceleration to store static files on the CDN to speed up access.
Use HTTP2.0 protocol to reduce the number of HTTP requests and increase transmission speed.

In short, optimizing the code is very important during the mall development process. By optimizing the code, you can reduce the number of HTTP requests, compress file size, reduce the number of DOM operations, cache query results, etc., and improve the performance of the mall website. At the same time, asynchronous programming can also be used to ensure code concurrency and avoid blocking. Some common code tuning methods and techniques introduced above can help developers better develop malls and improve the performance of mall websites.

The above is the detailed content of Code tuning methods and techniques in mall development. For more information, please follow other related articles on the PHP Chinese website!