Initialize vector with capacity 128 to avoid reallocs

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "meta-memcache-socket"
-version = "0.1.1"
+version = "0.1.2"
 edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

src/impl_build_cmd.rs

@@ -30,7 +30,7 @@ pub fn impl_build_cmd(
     }
 
     // Build the command
-    let mut buf: Vec<u8> = Vec::new();
+    let mut buf: Vec<u8> = Vec::with_capacity(128);
 
     // Add CMD
     buf.extend_from_slice(cmd);