Enum PostgresWriteMethod 

pub enum PostgresWriteMethod {
    Insert,
    Copy,
}

How rows are shipped to PostgreSQL in append mode.

Variants

Insert

Multi-row INSERT INTO … VALUES … — the default. Works with every write mode and the exactly-once transaction path.

Copy

COPY … FROM STDIN (FORMAT text) bulk load — typically 5–10× faster than multi-row INSERT for bulk append (issue #308).

Append-only: COPY has no ON CONFLICT, so combining write_method: copy with write_mode: upsert|delete is rejected at config load. The exactly-once path (write_batch_idempotent) always uses the INSERT/transaction path regardless of this setting — the watermark token must commit atomically with the page’s data.

Error semantics are all-or-nothing per batch, the same as a failed multi-row INSERT: one bad row fails the whole COPY and the DLQ router’s on_batch_error policy applies.

Trait Implementations

impl Clone for PostgresWriteMethod

fn clone(&self) -> PostgresWriteMethod

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for PostgresWriteMethod

impl Debug for PostgresWriteMethod

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

Formats the value using the given formatter.

impl Default for PostgresWriteMethod

fn default() -> PostgresWriteMethod

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for PostgresWriteMethod

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for PostgresWriteMethod

impl JsonSchema for PostgresWriteMethod

fn schema_name() -> Cow<'static, str>

The name of the generated JSON Schema.

fn schema_id() -> Cow<'static, str>

Returns a string that uniquely identifies the schema produced by this type.

fn json_schema(generator: &mut SchemaGenerator) -> Schema

Generates a JSON Schema for this type.

fn inline_schema() -> bool

Whether JSON Schemas generated for this type should be included directly in parent schemas, rather than being re-used where possible using the $ref keyword.

impl PartialEq for PostgresWriteMethod

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for PostgresWriteMethod

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for PostgresWriteMethod