Dynamin

Dynamin can minimize(i.e. set to 1) the read and write capacity units of Amazon DynamoDB tables and its indexes.

Installation

$ npm install -g dynamin

Usage

Before using dynamin, you need to set AWS credentials and region in some ways:

• ~/.aws/credentials
• ~/.aws/config
• Environment variables
  • AWS_ACCESS_KEY_ID
  • AWS_SECRET_ACCESS_KEY
  • AWS_DEFAULT_REGION

$ dynamin --help
Options:
  --help         Show help                                             [boolean]
  --version      Show version number                                   [boolean]
  -t, --table    Table name                                             [string]
  --tags         Lists of tags (keys and values)                         [array]
  --restore      Restores capacity units                               [boolean]
  -r, --region   AWS region                                             [string]
  -p, --profile  Profile name in your credential file                   [string]

Example

Minimize a table.

$ dynamin -t users

Minimize tables tagged with the specified keys and values.
Dynamin follows the tag filter syntax of Resource Groups Tagging API.
So the following minimizes tables tagged with (stage=dev or stage=test) and (type=web).

$ dynamin --tags key=stage,values=dev,test key=type,values=web

Capacity unit values will be stored in a JSON file located in ~/.config/configstore/dynamin.json.
You can restore the values by the following command.

$ dynamin --restore