Comments on: ThreadLocals are EVIL!!!

By: veraronge

veraronge — Wed, 21 Jan 2009 20:59:25 +0000

Using internet is simple as hell. But I can tell y ou right now, it can be very hard, if you are the first time user.
So, first thing I suggest – open the Explorer, and type in the address you like.
You’ll get there really fast, it depends on your connection speed.
Good luck.

By: Colin Saxton

Colin Saxton — Tue, 13 Nov 2007 03:55:51 +0000

“I don’t think I follow though. Doesn’t the documentation state that the ThreadLocal variable is released automatically when the thread is finished?”

The thing is that threads on a server may just be returned to a thread pool so the thread never finishes and the thread locals just linger until they are reset by another request or the server is shutdown.

By: Narcanti » Blog Archive » Deeper into Hibernate

Narcanti » Blog Archive » Deeper into Hibernate — Fri, 08 Sep 2006 10:02:49 +0000

[...] In den Methoden, um die Session oder die Ttransaction zu schließen kommt ein wichtiger Aspekt hinzu: Toni machte mich auf den Artikel “ThreadLocals are EVIL!!!”aufmerksam, in dem berichtet wird, dass ThreadLocals zu MemoryLeaks führen können, da manchmal am Ende eines Threads die im ThreadLocal gespeicherten Objekte nicht gelöscht werden und sich daher akkumulieren können. Daher muss beim Schließen der Session der ThreadLocal auf jeden fall durch threadLocal.set(null) geleert werden. [...]

By: alyce

alyce — Fri, 21 Jul 2006 09:28:27 +0000

Thenks, good work!

By: francis

francis — Mon, 17 Jul 2006 18:34:07 +0000

ice Site. Could use more of these instead of the many trash blogs on the web.

By: margrett

margrett — Mon, 17 Jul 2006 06:54:10 +0000

Revenue share

By: william

william — Sun, 16 Jul 2006 19:59:21 +0000

Rega viry, deratere fac caser terfe.

By: Nightly Builds » ThreadLocal is like malloc

Nightly Builds » ThreadLocal is like malloc — Thu, 13 Jul 2006 07:56:15 +0000

[...] Billy Newport’s Blog Alef Arendsen’s blog Again, its perfectly ok to use ThreadLocal in your applications, but follow the initialization and cleanup rule stated above. [...]

By: Alef Arendsen

Alef Arendsen — Thu, 05 Jan 2006 00:46:09 +0000

Hi Aviad,

it’s not that if you don’t release it yourself it’ll never happen. In certain situations however this is the case. ThreadLocals are implemented using a weak hashmap and when for example the value of an entry in the map refers to the key in the map there are situations the entire entry isn’t removed.

regards,
Alef

By: Aviad Ben Dov

Aviad Ben Dov — Thu, 22 Dec 2005 18:30:47 +0000

I don’t think I follow though. Doesn’t the documentation state that the ThreadLocal variable is released automatically when the thread is finished?