Enum nebari::tree::PersistenceMode

pub enum PersistenceMode {
    Transactional(TransactionId),
    Sync,
    Flush,
}

Controls the persistence guarantees of write operations.

Variants

Transactional(TransactionId)

Transactional writes are always fully synchronized, which means that data written is persisted to the best of the abilities provided by the operating system hosting Nebari. Additionally, the written data is tagged as belonging to this Transactionid.

Sync

Data written is persisted to the best of the abilities provided by the operating system hosting Nebari.

Flush

Data written is not buffered by Nebari, but may still be in operating-system level caches. In the event of a power loss or sudden application failure, the data written may not be available when the tree is reopened. Nebari will automatically recover to the last write that was fully synchronized to disk, but writing using this persistence mode moves the control of synchronization from Nebari to the operating system.

Implementations

impl PersistenceMode

pub const fn transaction_id(&self) -> Option<TransactionId>

Returns the transaction ID for writes performed with this mode, if applicable.

pub const fn should_synchronize(&self) -> bool

Returns true if writes should be fully synchronized before control is returned to the caller.

Trait Implementations

impl Clone for PersistenceMode

fn clone(&self) -> PersistenceMode

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for PersistenceMode

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

Formats the value using the given formatter.

impl From<Option<TransactionId>> for PersistenceMode

fn from(maybe_transactional: Option<TransactionId>) -> Self

Performs the conversion.

impl From<TransactionId> for PersistenceMode

fn from(id: TransactionId) -> Self

Performs the conversion.

impl PartialEq<PersistenceMode> for PersistenceMode

fn eq(&self, other: &PersistenceMode) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &PersistenceMode) -> bool

This method tests for !=.

impl Copy for PersistenceMode

impl Eq for PersistenceMode

impl StructuralEq for PersistenceMode

impl StructuralPartialEq for PersistenceMode