GET request and POST request

1. Get is to get data from the server, and post is to send data to the server.
2. Get is to add the parameter data queue to the URL referred to by the Action attribute of the submission form. The values correspond to each field in the form one by one and can be seen in the URL. Post uses the http post mechanism to place fields in the form and their content in the HTML header and send them to the URL address referred to by the Action attribute. You cannot see this process.
3. For the get method, the server uses request. querystring to obtain the value of the variable. For the POST method, the server uses request. Form to obtain the submitted data.
4. The data volume transmitted by get is small and cannot exceed 2 kb. The amount of data transmitted by post is large, which is generally not restricted by default. Theoretically, the maximum size of IIS4 is 80 KB, and that of iis5 is 100kb.
5. Low get security and high post security.

6. Size Limit
There is no data size limit on get and post theoretically, but the browser itself has a limit on the URL length. IE is 2083b, Firefox and chrome are 4098b. No matter how much data is post, the browser will crash. In addition, the log size on the server may be limited.
7 .!!! Note that the get method is used by default when the form does not write the method attribute.