What is the development trend of node programming development technology?

The fact that node technology has become a mainstream development tool in the field of web front-end can be said to be a beautiful misunderstanding in itself. When this technology was originally developed and used, it mainly appeared to solve back-end problems. Today, Shahe Java course training institution will come together to learn about the development history and future development trends of node technology.

a) Node8 enters the LTS era

The big change for Node.js is that it enters the Node8 era. It is a stable long-term support version (LTS). In addition to performance improvements, there are Here are a few key points.

Async/Await support. In fact, it can be supported through flag in Node.jsv7.6, and it will be implemented directly in node8. Through the Async function, you can better control the asynchronous process and stay away from CallbackHell. In the Async function, you can call Promise through await, and the generator wrapped by co. It can be said that it is a perfect Async function forward, and it is also perfectly compatible with various legacy codes backward. It is not an exaggeration to call it the ultimate asynchronous solution.

ES6 module support. Through the rapid development of vue/react, webpack, babel and typescript, es6 modules have been widely popularized and applied. In Node.jsv8.5, this experimental version feature can be turned on through --experimental-modules. Of course, if you want to use ES6 modules in earlier versions of Node.js, you can use the @std/esm module.

HTTP2 support. It has been enabled by default in Node.jsv8.8. HTTP2 features such as server-side push and multi-channel reuse can better facilitate browsers and are a powerful tool for performance optimization.

b) Enterprise-level Web development

In addition to the widely used mainstream Web framework Koa, Fastify has always been a strong competitor of the basic framework. The author Matteo Collina is the core developer of Node.js and the head of Stream. Performance optimization expert. Fastify is based on Schema optimization and has extremely obvious performance improvements. Uncle Lang thinks this is enterprise-level web development, and he introduced us to 3 well-known frameworks here.

b1)Egg.js

Alibaba’s open source enterprise-level Node.js framework Egg has released 2.0, based on Koa2.x, and the asynchronous solution is directly based on AsyncFunction. The framework layer optimization does not include the improvements brought by Node8, but brings about a performance improvement of about 30%.

Egg adopts the "microkernel plug-in upper-layer framework" model, which has significantly improved customization, ecology, and rapid development. In addition, it is worth noting that stability and security are also excellent.

b2)Nest

Nest is an enterprise-level web framework based on TypeScript and Express.

Many people joke that Nest is developed like Java. Indeed, Nest uses TypeScript as the underlying language. TypeScript is a superset of ES6 and supports type, object-oriented, and Decorator (similar to Annotation in Java). ) and other support. In terms of writing, maintaining the habits of Java developers can attract more people to get started quickly.

TypeScript support is the top priority for almost all NodeWeb frameworks currently. Nest was a well-known project in 2017 and is worth mentioning.

b3) ThinkJS

ThinkJS is a Node.js Web framework that embraces the future. It is committed to integrating project best practices and standardizing projects to make enterprise-level team development simpler and more efficient. .

Adhering to the design principle of simplicity and ease of use, while maintaining excellent performance and minimal code, it focuses on development experience and ease of use, providing strong support for WEB application development.

ThinkJS is a well-established domestic web framework. The v3 version was released in October 2017. It is based on the Koa kernel and has better improvements in performance and development experience.

Overall, Node.js is becoming increasingly mature in the field of enterprise web development, and both microservices and API middle layers have been implemented very well. In 2017, the only regret is that Node.js does not perform very well on servless, and there is little practice in related frameworks.

c) The indispensable Api middle layer

The front-end is becoming more and more complex, and the back-end is service-oriented. Today's front-end faces more challenges. A typical scenario is that in a service-oriented architecture, the headache faced by the front-end is heterogeneous APIs. When jointly debugging the front-end and back-end, multiple back-ends blame each other, which either slows down the online progress or makes the front-end performance extremely slow. . If the progress is slow, look to the front end, and if the performance is poor, look to the front end. But should the front end really take the blame?

The Api middle layer application of Node.js solves this problem very well. When you don't want to change the backend, you can just do the frontend yourself, which is more flexible and adaptable.

Transparent transmission interface. For intranet or non-security interfaces, the middle layer transparent transmission can be used.

The aggregation interface is very convenient for processing heterogeneous APIs. If the model can be sorted out, it will be easier to adapt to changes.

The Mock interface provides front-end development efficiency through the Mock interface, and has an extremely obvious effect on process optimization. For example, yapi developed by Qunar is specifically designed to solve this problem.

In addition, if you want to do something technology-driven on the front end, SSR (Server Side Rendering) and PWA (Progressive Web Application) are also very good choices.

d) New fields (deep learning, blockchain, etc.)