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Hunting Bugs with Puppeteer and AWS Lambda - Online Meetup

Hunting Bugs with Puppeteer and AWS Lambda

Sarah Wachs, Software Developer at Searchmetrics

One of the worst bugs to have is the one that is hard to reproduce but has very serious consequences. We were recently faced with one such bug after we added a new caching layer to our application.

The quest to reproduce this bug finally ended when we decided to move away from manual testing. We moved to a more automated approach using AWS Lambda functions and puppeteer to scale up our testing efforts. With our swarm of Lambda functions we were finally able to identify the root cause, evaluate our fix and create a regression test.

I will share our approach and what we learned on the way.


Sarah Wachs is a Software Developer at Searchmetrics with a focus on frontend development. In her free time she is active in the Tech communities in Berlin, e.g. organising events with Women Who Code. She likes to try new cooking recipes and new technologies and languages, most recently Rust.