How to Write GoLang code with considering performance (Optimized)

1. Use reference type for passing Slice

You can reduce 16bytes memory(don’t re-assign length(8byte),capacity(8byte)

Do not use Append, if you already know length which wants to use

Append() function spends 8*24 bytes memory when you call every time

1. a Slice spend memory 8*24 bytes

a Pointer to Buffer

length

capacity

1. Recap

Let’s see how much we can reduce spending memory.

16bytes + len(collections)*24bytes