https://github.com/e0ipso/keyv-dynamodb

Dynamo DB storage for the Keyv project
https://github.com/e0ipso/keyv-dynamodb

Last synced: 3 months ago
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Dynamo DB storage for the Keyv project

• Host: GitHub
• URL: https://github.com/e0ipso/keyv-dynamodb
• Owner: e0ipso
• License: gpl-2.0
• Created: 2018-03-20T23:27:46.000Z (almost 7 years ago)
• Default Branch: master
• Last Pushed: 2021-10-31T20:43:34.000Z (about 3 years ago)
• Last Synced: 2024-05-21T12:35:47.765Z (7 months ago)
• Language: JavaScript
• Size: 99.6 KB
• Stars: 7
• Watchers: 3
• Forks: 0
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        




keyv-dynamodb

    


    





Dynamo DB storage for the Keyv project







Install

Why?

Usage

Contributors

License



·   

Install



yarn add @keyv/dynamodb

Create the DynamoDB table using the aws CLI tool. Alternatively you can use

the web dashboard to create the table, just make sure to create the expected

fields. It is important to keep the field names as provided in the example. You

will need to provision the DynamoDB capacities

based on your expected usage. Execute in a terminal:



# 1. Create the DynamoDb table.

# Add profile or key/secret information if necessary.

aws dynamodb create-table \

    --table-name KeyvStore \

    --attribute-definitions \

        AttributeName=Cid,AttributeType=S \

    --key-schema AttributeName=Cid,KeyType=HASH \

    --provisioned-throughput ReadCapacityUnits=1,WriteCapacityUnits=1

# 2. Enable the TTL attribute. You may need to wait for the table to finish the

# creation process.

# Add profile or key/secret information if necessary.

aws dynamodb update-time-to-live \

    --table-name KeyvStore \

    --time-to-live-specification Enabled=true,AttributeName=Expiration

Why?

This project is interesting when used with the got HTTP

client (or directly using

cacheable-request) inside of a Serverless

project. Traditional cache solutions like ElastiCache with Redis will force you

to deploy inside of a VPC. This has negative implications with regards to

performance (via Lambda cold-starts) and scalability (via limited subnet size).

This will allow you to have an application cache backend that doesn't require a

VPC, since DynamoDB connections from Lambda do not require to deploy into a VPC.

You can also use this project as a stand-alone arbitrary cache back-end, without

got or

cacheable-request).

Usage

const KeyvDynamoDb = require('@keyv/dynamodb');


const keyvDynamoDb = new KeyvDynamoDb({

  tableName: 'KeyvStore',

  clientOptions: {

    // Any options here will be passed to the DynamoDB client.

    region: 'eu-central-1',

  },

});

keyvDynamoDb.on('error', handleConnectionError);



Or you can manually create a storage adapter instance and pass it to Keyv:

const Keyv = require('keyv');

const KeyvDynamoDb = require('@keyv/dynamodb');


const keyvDynamoDb = new KeyvDynamoDb({

  tableName: 'KeyvStore',

  clientOptions: {

    // Any options here will be passed to the DynamoDB client.

    region: 'eu-central-1',

  },

});

const keyv = new Keyv({ store: keyvDynamoDb });



Contributors


Contributors




  



Mateu Aguiló Bosch





License

keyv-dynamodb is GPL-2.0 licensed.