I can think of several situations where nginx modules must be used for development:
1 http access
2 High requirements for link management
3 High concurrency
Are there other situations?
In addition, I feel that as long as modules with high performance requirements are basically modified to open source, am I narrow-minded? When it comes to changing to open source, everyone has planned it for a long time, and how many people are just trying their best? Or is it better to learn now and sell now, and the company is willing to train more people?
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
If there are existing modules that can be done easily, try to use them directly. If you develop it yourself, subsequent version maintenance will be relatively expensive.
It would be a better result if the improvement submission could be merged into the upstream official.
In addition, unless you have considered various solutions and feel that you must develop a new module, it is likely that someone has already met the same requirement.
You can refer to the following Tengine, an extension of nginx made by the Taobao team.