Optional
blockingOptional
dataUsed for "database" commands to enforce type checking.
Private
loggerMaximum number of parameters allowed. -1 for no maximum.
Minimum number of parameters require.
Optional
pubUsed when PUB/SUB is in effect.
Optional
signSign is used in commands with a compliment command. The only current example is INCR/DECR. Sign is 1 for INCR and -1 for DECR
Optional
txUsed in transactions to enqueue a command.
Every command must implement the execute method.
Available since 1.0.1.
MSET key value [key value ...]
Sets the given keys to their respective values. MSET replaces existing values with new values, just as regular SET. See (not implemented) MSetNxCommand | MSETNX if you don't want to overwrite existing values.
MSET is atomic, so all given keys are set at once. It is not possible for clients to see that some of the keys were updated while others are unchanged.
Return value
Simple string reply: always OK since MSET can't fail.