"Systems are sneaky,anyone who tells you they are dumb boxes that just do what they have been instructed to do, is a year short on experience. So you need your box of tricks to be able to sneak up on them and catch them doing the naughty."
"ThreadLocals are garbage collected when the thread is garbage collected. However, if the thread is a member of a thread pool, then the values may never be garbage collected, leading to a memory leak. "
