redis_rocksdb 0.3.9

rust implement structure kv(key/value) embedded database, storage by rocksdb
Documentation 
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use crate::{Bytes, KeyValue, RedisRocksdb, RrError};

impl KeyValue for RedisRocksdb {
	fn get<K: Bytes, V: Bytes>(&self, key: &K) -> Result<Option<Vec<u8>>, RrError> {
		let v = self.db.get(key.as_ref())?;
		match v {
			None => Ok(None),
			Some(v) => Ok(Some(v.to_vec())),
		}
	}

	fn put<K: Bytes, V: Bytes>(&mut self, key: &K, value: &V) -> Result<(), RrError> {
		match self.db.put(key.as_ref(), value.as_ref()) {
			Ok(t) => Ok(t),
			Err(e) => Err(RrError::from(e)),
		}
	}
}