feat: database backend selection at runtime

src/utils.rs

@@ -29,17 +29,6 @@ pub fn increment(old: Option<&[u8]>) -> Option<Vec<u8>> {
     Some(number.to_be_bytes().to_vec())
 }
 
-#[cfg(feature = "rocksdb")]
-pub fn increment_rocksdb(
-    _new_key: &[u8],
-    old: Option<&[u8]>,
-    _operands: &mut rocksdb::MergeOperands,
-) -> Option<Vec<u8>> {
-    dbg!(_new_key);
-    dbg!(old);
-    increment(old)
-}
-
 pub fn generate_keypair() -> Vec<u8> {
     let mut value = random_string(8).as_bytes().to_vec();
     value.push(0xff);