Go practice -- use JWT (JSON web token) in golang

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I wrote about golang How to use cookie The blog of ：
actual combat –go Use in cookie

Today, let's give you a brief introduction golang How to use token, Of course, we should rely on it github Excellent open source library on .

First , To figure out a problem ,token、cookie、session The difference between .

##token、cookie、session The difference between

Cookie
Cookie Always save in the client , Press the storage location in the client , Divisible memory Cookie And the hard disk Cookie.

Memory Cookie Maintained by the browser , Save in memory , The browser closes and disappears , Its existence is short . Hard disk Cookie Save it on your hard drive , There is an expiration time , Unless the user manually cleans or runs out of time , Hard disk Cookie It won't be deleted , Its existence is long term . therefore , According to existence time , It can be classified as non-persistent Cookie And persistent Cookie.

cookie It's a very specific thing , It refers to a kind of data that can be stored permanently in the browser , It's just a data storage function implemented by browser .

cookie Generated by the server , Send it to the browser , Browser handle cookie With key-value Save form to a text file in a directory , The next time you request the same website, you will send the cookie Send to the server . because cookie It's on the client side , So browsers add some restrictions to make sure cookie Will not be used maliciously , It doesn't take up too much disk space at the same time , So for each domain cookie The quantity is limited .

Session

session from