A Node and AWS Lambda/SNS powered system for sending web notifications with payloads.
Amazon SNS is able to send push notifications to both iOS and Android devices, but not web clients. Sending these notifications is not simple as the payload requires individual encryption for each client.
Pushkin listens to SNS topics, receiving push notifications as they are sent to iOS and Android devices. It then multiplies that message by the number of web clients subscribed, batches them up (currently into batches of 200) and fires Lambda instances for each batch, allowing us to send numerous notifications simultaneously.
It uses Redis to store subscription data and the web-push library to encrypt messages being sent.
- Node 6.0 (5+ may be fine, not tested)
- Redis (or AWS Elasticache)
Clone the repo, then run
npm install
to install all dependencies. It uses the Serverless framework to simplify deploying lambdas. More installation instructions are needed but code can be deployed by running:
sls dash deploy
Tests can be run with:
npm run test
This started off as an experiment and ballooned outwards, so the code is quite messy and the documentation is currently sparse. Sorry. I intend to fix both of those issues when I have time to do so.