CPU cache. A CPU cache is a hardware cache used by the central processing unit (CPU) of a computer to reduce the average cost (time or energy) to access data from the main memory. A cache is a smaller, faster memory, closer to a processor core, which stores copies of the data from frequently used main memory locations. Most CPUs have different independent caches, including instruction and data caches, where the data cache is usually organized as a hierarchy of more cache levels (L1, L2, etc.).
USPS Tracking is a way for you to make sure that your most important packages make it to their final destinations. The US Postal Service can tell you the date, time and zip code where your item was delivered, giving you peace of mind.
USPS tracking problems can occur when say the tracking number cannot be found, or there is a total outage where USPS.com has gone offline. Other issues encountered could be to do with forwarding and priority mail, deliveries of packages etc. Whatever reason you have a problem with USPS share with Is Down Right Now. The USPS (United States Postal Service) now has over 617,000 workers with over 211,000 vehicles working to get you delivery to you.