dynamodb

Stores key/value pairs as a single document in a DynamoDB table. The key is stored as a string value and used as the table hash key. The value is stored as a binary value using the data_key field name.

# Common config fields, showing default values
dynamodb:
table: ""
hash_key: ""
data_key: ""
region: eu-west-1

A prefix can be specified to allow multiple cache types to share a single DynamoDB table. An optional TTL duration (ttl) and field (ttl_key) can be specified if the backing table has TTL enabled.

Strong read consistency can be enabled using the consistent_read configuration field.

Credentials

By default Benthos will use a shared credentials file when connecting to AWS services. It's also possible to set them explicitly at the component level, allowing you to transfer data across accounts. You can find out more in this document.

Fields

table

The table to store items in.

Type: string
Default: ""

hash_key

The key of the table column to store item keys within.

Type: string
Default: ""

data_key

The key of the table column to store item values within.

Type: string
Default: ""

consistent_read

Whether to use strongly consistent reads on Get commands.

Type: bool
Default: false

ttl

An optional TTL to set for items, calculated from the moment the item is cached.

Type: string
Default: ""

ttl_key

The column key to place the TTL value within.

Type: string
Default: ""

region

The AWS region to target.

Type: string
Default: "eu-west-1"

endpoint

Allows you to specify a custom endpoint for the AWS API.

Type: string
Default: ""

credentials

Optional manual configuration of AWS credentials to use. More information can be found in this document.

Type: object
Default: {"id":"","profile":"","role":"","role_external_id":"","secret":"","token":""}

credentials.profile

A profile from ~/.aws/credentials to use.

Type: string
Default: ""

credentials.id

The ID of credentials to use.

Type: string
Default: ""

credentials.secret

The secret for the credentials being used.

Type: string
Default: ""

credentials.token

The token for the credentials being used, required when using short term credentials.

Type: string
Default: ""

credentials.role

A role ARN to assume.

Type: string
Default: ""

credentials.role_external_id

An external ID to provide when assuming a role.

Type: string
Default: ""

max_retries

The maximum number of retries before giving up on the request. If set to zero there is no discrete limit.

Type: number
Default: 3

backoff

Control time intervals between retry attempts.

Type: object
Default: {"initial_interval":"1s","max_elapsed_time":"30s","max_interval":"5s"}

backoff.initial_interval

The initial period to wait between retry attempts.

Type: string
Default: "1s"

backoff.max_interval

The maximum period to wait between retry attempts.

Type: string
Default: "5s"

backoff.max_elapsed_time

The maximum period to wait before retry attempts are abandoned. If zero then no limit is used.

Type: string
Default: "30s"