Struct TransactionSnapshot 

pub struct TransactionSnapshot {
    pub txn_id: u64,
    pub snapshot_id: u64,
}

Transaction metadata captured when a transaction begins.

A snapshot contains two key pieces of information:

• txn_id: The unique ID of this transaction (used for writes)
• snapshot_id: The highest committed transaction ID at the time this transaction started

The snapshot_id determines which rows are visible: rows created by transactions with IDs ≤ snapshot_id are visible, while rows created by later transactions are not. This implements snapshot isolation.

Fields

txn_id: u64

The unique ID assigned to this transaction.

snapshot_id: u64

The highest committed transaction ID when this transaction began.

Trait Implementations

impl Clone for TransactionSnapshot

fn clone(&self) -> TransactionSnapshot

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for TransactionSnapshot

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Copy for TransactionSnapshot