After logging in to Duoduo app, because Duoduo did not set the account exit button, it could not exit normally. At this time, we can exit the account through the settings of the mobile phone itself.
abstract
1, a very early company, a company may only have one server, and slowly the number of servers began to increase. Every server must register and log in, and then log out one by one when exiting. The user experience is very poor! As you can imagine, logging in to Douban FM, Douban reading, Douban movie, Douban diary ... will really make people collapse.
2.* * * Enjoy cookies "is the way for * * * to enjoy the above courses. I think it's better to call it "* * * Enjoy the conversation". Essentially, a cookie is just a medium for storing a session id, which can also be placed in the url of each request. It is said that this road is unsafe, so I didn't delve into it. Which great god can recommend relevant information, and I will make it up later.
3, SSO-Token mode Because * * * enjoys the session in an unsafe way, we no longer use the session-id as the identity. We also generate an identifier called SSO-Token (or Ticket). This identifier is unique to the whole server group, and all server groups can verify this token.