Title: There are stores numbered 1-n, and each store has a permanent merchandise value of v
Operation 1: One day has passed The xth store adds a goods with a value of val
Operation 2: T
Tag: Mars
NOSQL application essay contest, win iPhone6 and Mars!
Big data contains big profits. For some companies with a huge amount of data, the use of highly scalable non-relational databases has often surpassed relational databases, and this new type of data