Write Request Unit (WRU)
All writes in DynamoDB are strongly consistent
Measuring the write capacity usage
All writes are measured in terms of 1 KB chunks. Unit for measuring writes is referred to as the Write Request Unit (WRU).
1 WRU = 1 write of 1 KB or less
You may use the expression below to calculate the WRU usage for a write.
Round_UP(size of write data)x(1 WRU)
Go through the example below for clarity.
