I am currently rewriting some recurring background tasks as AWS Lambda functions. Instead of running underutilised servers with a few cronjobs, Lambda allows me to focus more on the solving the specific task and not having to care about servers.

I have been using a lambda to sync my Splitwise budget to a Google Spreadsheet for quite some time now (which I am hoping to refactor a bit and open source). The lambda requires API keys for Splitwise, Open Exchange Rates and Google Docs.

In order to make configuration management easier, I wrote a small class that downloads a configuration file from a specified AWS S3 bucket and parses it using ConfigParser:

You can see it in action in a lambda I wrote for relaying SNS messages to Telegram and/or Slack chat.