General Query - Which order gets Exceuted first BUY or SELL

shivdas_b

hi,
assume If i punch BUY and SELL order at the exact same time,
1. which one will get executed first
2. why?

as per my observations SELL order requires less validation checks as compare to BUY so SELL will get executed first.
and this is what causing few problems in my algo.

your clarification will help a lot. @rakeshr @sujith @Kailash ,
thanks in advance.