How does “304 Not Modified” work exactly?
How are “304 Not Modified” responses generated? How does a browser determine whether the response to an HTTP request is 304? Is it … Read more
http
What is HTTP “Host” header?
Given that the TCP connection is already established when the HTTP request is sent, the IP address and port are implicitly known — … Read more
Correct way to delete cookies server-side
For my authentication process I create a unique token when a user logs in and put that into a cookie which is used … Read more
URL matrix parameters vs. query parameters
I’m wondering whether to use matrix or query parameters in my URLs. I found an older discussion to that topic not satisfying. Examples … Read more
Which HTTP status code means “Not Ready Yet, Try Again Later”? [closed]
Closed. This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be … Read more
Difference between Pragma and Cache-Control headers?
I read about Pragma header on Wikipedia which says: “The Pragma: no-cache header field is an HTTP/1.0 header intended for use in requests. … Read more
Do I need a content-type header for HTTP GET requests?
As far as I understood there are two places where to set the content type: The client sets a content type for the … Read more
Is REST DELETE really idempotent?
DELETE is supposed to be idempotent. If I DELETE http://example.com/account/123 it’s going to delete the account. If I do it again would I … Read more
Why is it said that “HTTP is a stateless protocol”?
HTTP has HTTP Cookies. Cookies allow the server to track the user state, the number of connections, last connection, etc. HTTP has persistent … Read more
What is q=0.5 in Accept* HTTP headers?
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-us,en;q=0.5 Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7 What do these ‘q=%f’ mean? 3 Answers 3