Module types 

Structs

AttributeDefinition

Attribute definition — declares an attribute’s type.

CapacityDetail

Per-resource capacity detail.

ConsumedCapacity

ConsumedCapacity returned when ReturnConsumedCapacity is set.

ConversionError

Error returned when converting between AttributeValue and Rust types.

GlobalSecondaryIndex

Global Secondary Index definition.

ItemCollectionMetrics

ItemCollectionMetrics returned when ReturnItemCollectionMetrics: SIZE is set and the table has local secondary indexes.

KeySchemaElement

Key schema element — defines a key attribute.

LocalSecondaryIndex

Local Secondary Index definition.

OnDemandThroughput

On-demand (PAY_PER_REQUEST) throughput ceilings (stored but not enforced).

Projection

GSI projection type.

ProvisionedThroughput

Provisioned throughput settings (stored but not enforced).

SseSpecification

SSE specification for server-side encryption settings.

Tag

DynamoDB Tag (key-value pair attached to a resource).

Enums

AttributeValue

DynamoDB AttributeValue — the core type system.

KeyType

Key type: HASH (partition key) or RANGE (sort key).

ProjectionType

Projection type enum.

ScalarAttributeType

Scalar attribute types that can be used as keys.

Constants

MAX_ITEM_SIZE

Maximum item size in bytes (400 KB).

TRANSACTIONAL_CAPACITY_FACTOR

The transactional capacity multiplier. TransactWriteItems and TransactGetItems cost twice the equivalent single-item operation, so each item’s rounded-up units are doubled (the rounding happens per item, before the multiplier, to match AWS at the KB/4KB boundary).

Functions

consumed_capacity

Build a ConsumedCapacity for a simple table operation.

consumed_capacity_with_indexes

Build a ConsumedCapacity with per-GSI breakdown for INDEXES mode.

consumed_capacity_with_secondary_indexes

Build a ConsumedCapacity with per-GSI and per-LSI breakdown for INDEXES mode.

item_size

Calculate the total size of a DynamoDB item in bytes.

normalize_dynamo_number

Normalize a DynamoDB number string to its canonical form.

normalize_number_for_sort

Normalize a DynamoDB number string into a comparable string that sorts correctly in SQLite TEXT collation.

read_capacity_units

Calculate read capacity units assuming strongly consistent reads (1 RCU per 4KB, rounded up). Used when ConsistentRead is true or when the read type is not specified.

read_capacity_units_with_consistency

Calculate read capacity units accounting for consistency mode.

transactional_read_capacity

Build a ConsumedCapacity for one table in a transactional read (TransactGetItems). units is the table total and already includes the transactional 2x factor. Under INDEXES the Table detail reports ReadCapacityUnits alongside CapacityUnits, matching AWS.

transactional_write_capacity

Build a ConsumedCapacity for one table in a transactional write (TransactWriteItems). units is the table total and already includes the transactional 2x factor. Under INDEXES the Table detail reports WriteCapacityUnits alongside CapacityUnits, matching AWS.

validate_dynamo_number

Validate a DynamoDB number string against DynamoDB’s constraints:

write_capacity_units

Calculate write capacity units (1 WCU = 1KB, rounded up).

Type Aliases

Item

A DynamoDB item: a map of attribute names to values.