When I am doing a test of comparison between Stateful and Stateless BSP application ( mentioned in blog Stateless and Stateful – Different behavior in application side ), I meet with a strange issue.
The conclusion is stateful BSP application will handle request sequentially. Suppose in client I send two request A and B to server. Request A takes 3 seconds to finish and B 2 seconds.
The request is sent via jQuery API.
It means for stateful application, I will observe the following timeline in Chrome network tab:
(1) the start time of both request are almost the same, since I send out two request in client code almost at the same time.
(2) even though the second request itself takes 2 seconds to finish, the total processing time for it is 3 seconds waiting for A to finish first + 2 seconds = 5 seconds in the end.
the testing request for stateful application looks as below this time:
Through comparison I get to know that the session cookie
sap-contextid is not sent together with request triggered by ES6 Fetch API.
Then in Fetch documentation I find out that I need to add option credentials: “include”.
