tuple_object.bsize()
tuple_object
If t is a tuple instance, t:bsize() will return the number of bytes
in the tuple. With both the memtx storage engine and the vinyl storage
engine the default maximum is one megabyte
(memtx_max_tuple_size or
vinyl_max_tuple_size). Every field
has one or more "length" bytes preceding the actual contents, so
bsize() returns a value which is slightly greater than the sum of the
lengths of the contents.
The value does not include the size of "struct tuple" (for the current size of this structure look in the tuple.h file in Tarantool's source code).
Returns
number of bytes
Return type
number
In the following example, a tuple named t is created which has three
fields, and for each field it takes one byte to store the length and
three bytes to store the contents, and then there is one more byte to
store a count of the number of fields, so bsize() returns 3*(1+3)+1.
This is the same as the size of the string that
msgpack.encode({'aaa','bbb','ccc'})
would return.
tarantool> t = box.tuple.new{'aaa', 'bbb', 'ccc'}---...tarantool> t:bsize()---- 13...