HTAP-СУБД с предсказуемым поведением под нагрузкой

// MVCC transaction manager (AngaraBase)
pub struct TransactionManager {
    mvcc_store: Arc<MvccStore>,
    undo_log: UndoLog,
    raft_node: RaftNode,
}

impl TransactionManager {
    pub async fn begin_txn(
        &self,
        isolation: IsolationLevel,
    ) -> Result<Transaction> {
        let ts = self.mvcc_store
            .next_timestamp().await?;
        Ok(Transaction::new(ts, isolation))
    }
}