Dratini is a push notification handler works on a spot instance. Normally, push notification server is resident API, but, like daily notification job, most of time it stands by and costs meaninglessly.
You can reduce the cost if the handler works only at the moment. Dratini cannot serve request like normal push notification handler. However, it will send bulk push notifications in parallel with background workers based on goroutine.
go get -u github.com/timakin/dratini
This project uses Go Modules, so if you've already installed Go (>= 1.11) and enables the flag GO111MODULE=on, you can automatically install the dependencies.
To run dratini, you must provide configuration path via -c option (See CONFIGURATION.md about details), and path (or url) written notification request JSON via -t option (See PUSH_REQUEST.md about detail parameters).
$ cd $GOPATH/src/github.com/timakin/dratini
$ go build -o app
$ app -c /path/to/config.toml -t /path/or/url/to/notifications.json
Licensed under the MIT License.