update modifies the expiration time of a job in the heap.

Add inserts a string element in the consistent hash.

Close stops handler

Close stops asynchronous goroutines and close connection

Close stops current node of cluster

Close graceful shutdown database

Del delete data to the db, but instead of writing it back to memtable, it writes to pendingWrites first

Exec executes command on cluster

Exec executes command parameter `cmdLine` contains command and its arguments, for example: "set key value"

Exec executes command within one database

Get returns an element close to where name hashes to in the circle.

GetN returns the N closest distinct elements to the name input in the circle.

GetTwo returns the two closest distinct elements to the name input in the circle.

Len returns the number of jobs in the heap.

Len returns the length of the uints array.

Less reports whether the job with index i should sort before the job with index j.

Less returns true if element i is less than element j.

MakeSyntaxErrReply creates syntax error