Review

1. 2023-10-10 22:36

一、Introduction #

Error handling is a way to find bugs and solve them as quickly as humanly possible. The errors in Node.js can be either operation or programmer errors.

有两种错误

• 编程错误：程序员写出的错误（语法错误、引用错误、类型错误）
• 业务错误：外部因素导致服务不能正常运行（超时、服务端异常、输入错误）

Error handling techniques #

There are four fundamental strategies to report errors in Node.js:

1. Throw
2. try…catch blocks
3. Callbacks
4. Promises or Async/await
5. Event emitters(events)
6. Middleware
7. unhandledRejection, uncaughtException

Reference #

• Node.js Error Handling Made Easy: Best Practices On Just About Everything You Need to Know
• Error handling in Node.js