How to choose right key to reach the best performace of get() method.
If we suppose that suitation:
we want to save student_number(long) and teacher_number(long) into CB.
both number are in [1,10000].
To make the key unique, we should add some prefix or postfix with the number.
then we will have 2 choices:
choice A: let the key as 'student_prefix_' + student_number, 'teacher_prefix_' + teacher_number;
choice B: let the key as student_number + '_student_postfix', teacher_number + '_teacher_postfix';
which choice can get better performance for get() function? and why ?