Go swim is a simple program that checks tide predictions before sending alerts with the best time to swim.

I go for a swim in the ocean everyday. For a while I wouldn't check the tides and would sometimes end up taking a pretty terrible swim at a very shallow beach. Lately I've been checking the tides manually, but I thought it would be fun to automate the process.

The program is run in a Lambda function, triggered every morning by an EventBridge scheduler. It reaches out to the Canadian Hydrographic Service API to get local tide predictions for the day. It then filters results into windows of time where the tide is above 2.25M. Finally, it sends a notification to my phone with ntfy.sh.

Deployment is done via terraform, and the code is written in Go. ie GO Swim!