For data of a certain game stored in client do not change
often, the hash method is used to index data, which can bring
a quick search for static data. A two-level hash mapping
function is designed in the database model, which defines a
bucket structure to package data files and uses filename in
the database model as keyword, later obtains the data storage
address by a second hash. We define a naming rule in the
database model with a three-level format, e.g.
“catalog_class_meaning”. Blows are details of the hash
mechanism used in the system.