Explain the Features of MemCached?

Features of Memcached are following:-

It is open source.
It is very scalable; just add boxes with memory to spare.
Memcached runs as a standalone service. So, if you take your application down, the cached data will remain in memory as long as the service runs.
Memcached server is a big hash table.
It reduces the database load.
It is very efficient for websites with high database load.
The cache nodes are very ignorant: which means they have no knowledge about other nodes participating. This handles the management and configuration of such a system extremely easy.
It is distributed under BSD (Berkeley Software Distribution) license.
It is a client server application over UDP or TCP.