AWS User Group UK Meetup #38

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We are delighted to welcome back Yan Cui (@theburningmonk) this month for his talk on "Building observability into a Serverless architecture". Our second talk will be announced shortly.


• 18:30: Arrival, Registration and Networking

• 19:00: Talks start

• 20:30: Food and drinks provided due to the generosity of our Sponsors!

Talk 1:

"Building observability into a Serverless architecture"

Description: Serverless introduces a number of challenges to existing tools for observability, we need to adapt our practices to fit this new paradigm. In this talk we will see how you can implement log aggregation, tracing and correlation IDs for a serverless application. In this talk, we will discuss how you can build observability into a serverless application, whilst touching on: how to implement log aggregation; the need for structured logging and sampling debug logs in production; how to capture and forward correlation IDs through both synchronous (API Gateway) as well as asynchronous (SNS, Kinesis, S3, etc.) invocations; and how to capture performance traces to help debug performance issues.

Yan is an experienced engineer who has worked with AWS for nearly 10 years. He has recently been featured in an article on the "Top 7 AWS experts you should be following in 2019" ( He has been an architect and lead developer with a variety of industries ranging from investment banks, e-commerce to mobile gaming. In the last 2 years he has worked extensively with AWS Lambda in production, and he has been very active in sharing his experiences and the lessons he has learnt, some of his work has even made their way into the Serverless Well-Architected whitepaper published by AWS.

Yan is a regular speaker at user groups and conferences internationally, and he is also the author of Production-Ready Serverless and a co-author of F# Deep Dives. In his spare time he keeps an active blog at where he shares his thoughts on topics such as AWS, serverless, functional programming and chaos engineering.

Talk 2: Coming Shortly

Remember to follow us @AWSUserGroupUK ( for the latest updates and you can find videos of our past meetups here (

A massive thank you to our Sponsors.
• Deloitte
• eSynergySolutions
• PagerDuty