Many jcl statements contain specific values designed to direct and control the execution of the statement. What are these fields called?

708

What is queue() in jquery? Use of queue() in jquery?

428

Which language is used in the power query?

1

Define Initial Context?

573

How do you define social class?

591

What is work centre category?

514

function modules are also external subroutines. State true or false. : abap modularization

586

4 down vote favorite share [g+] share [fb] share [tw] I am developing my site using server side sessions using redis as backend for saving the session. Now the issue which is bothering me is of user leaving the website without logging out. I mean user simply closes the browser which causes the cookie to be deleted. Now session of that user still exists on the server and will not be used again as new login requires creating a new session due to security reasons. To avoid the case where hacker steals the old cookie and use it after user login again with same old session id. In essence user leaves the website without explicitly logging out and his session will be deleted after certain time limit of inaccessibility. I am thinking time limit of 30-60 minutes. Also with every new request from user his cookie will also be updated to keep track of when the user last time accessed the site. But nowadays, people let site remain open for long time without accessing it. For example users open facebook and gmail in new tabs and forget about them for 2-3 hours and still they are not asked to login again. Is letting a 2-3 hours old cooke access the session secure? My concern is someone steals user cookie and use it 2-3 hours later. Thinking on this topic has also forced me to question how facebook manages security if user can use a session where they are not accessing it for long periods of time and still they remain logged in. Or is it not secure for me to keep logged in when am not accessing the site session for longer period of time? It can be the case also there is some pinging mechanism using which sites keep track of user having their site open in a browser and when browser closes they are notified and can work accordingly. My website is a social network and needs all those security and usage features which a social network may need. I am new to web security and web development in general and may be the case where my above questions may seem a little basic. If you feel that is the case kindly point to some good reference where I can read and find answers to my question.

1730

Explain the difference between dispatchaction and lookupdispatchaction in struts?

2000

Is there a way to jump out of a function or functions?

620

What is hashtable and explain features of hashtable?

548

You want ot make catalogue link appear for a user. How would you do that?

439

What is stream api in java8?

522

What's the way to read sql that is generated by Tableau Desktop?

204

What are the __date__ and __time__ preprocessor commands?

559