https://answers.axonivy.com/questions/2440/javadoc-of-idatacach-with-lifetime-parameter<p>Hi Ivyteam, </p> <p>According to the javadoc: <img alt="alt text" src="http://answers.axonivy.com/upfiles/IDataCache_NC0V36q.PNG"></p> <p>I try to store the value by using IDatacach with <strong>lifetime's value is 0</strong>. Then I expected that it will be expired after 1 minute. But unfortunately, <strong>it seems to be infinite time</strong> in IvyCach, even I call it again after 5 minutes.</p> <p>After Hau Tran's TA guy dig into the ivy source code. He found that, there is one condition to check like that <strong><em>if (lifetime &gt; 0)</em></strong> in the method processGroup and processEntry of DataCacheInvalidationJob class.</p> <p>Now, you see that the java doc make me consufed about the lifetime's explanation.</p> <p>I am looking forward to hearing any ideas from you :)</p> <p>Vuong Vu</p>enFri, 17 Feb 2017 14:35:41 -0500https://answers.axonivy.com/questions/2440/javadoc-of-idatacach-with-lifetime-parameter/2453<p>To expire the cache after one minute I would pass '60' as lifetime (in seconds). </p> <p>However the fact that the value zero (0) behaves like -1 is for legacy reasons. For a long time the cache was accidentally wrong implemented (lifetime &gt; 0). So many implementations in the field already rely on the fact that 0 is also cached forever. And we'll not change the implementation to keep these old projects happy.</p> <p>In my opinion it also makes no sense to use a cache which is only valid for less than a second.</p>Reguel WermelingerFri, 17 Feb 2017 14:35:41 -0500https://answers.axonivy.com/questions/2440/javadoc-of-idatacach-with-lifetime-parameter/2453