Deeplist, not sure what you're problem is but I rarely see you respond to anyone with anything but a smart*** comment. You seem to have some social issues that need to be resolved.
I just asked if you knew what a DDoS attack was. He didn't say anything about traffic spikes other than the DDoS attack that he's currently getting hit by. If you have the means to null route them effectively, the traffic wouldn't even REACH the server. So, how would that affect the RAM consumption? The only "smartass comment" around here appears to be the one that YOU made regarding social issues that need to be resolved.