Agar hum "Facebook" application ki baat kre to is application k millions of users hain aur agar humney "byte data type" ki jagah "long data type" use ki jab k "byte data type" humari requirement ko fullfil kr rhi hai to aap millions of users ko (8byte = long data type) se multiply kr len to jitne "GB(Gigabyte)" space aye ga woh memory humey extra required hogi apney us variable ko store krwane k liye. Humari jitni bhi applications fail hoti hain woh isi wajah se fail hoti hain kyun k hum ne apni application ko optimize nahi kiya hota.
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