Observing all the Serverless Things • Peter Elger & Guilherme Dalla Rosa • GOTO 2022

This presentation was recorded at GOTO EDA Day 2022. #GOTOcon #GOTOeda #GOTOldn http://gotoldn.com Peter Elger - Co-Founder and CEO of fourTheorem Guilherme Dalla Rosa - Serverless Engineer at fourTheorem ABSTRACT Have you ever thought that your Lambda functions could fail without you even noticing? If the answer is YES, that’s probably because you already “got burned" by playing with the cloud, where errors and failures are always around the corner. Unfortunately, we can’t prevent all types of failures, but what we can do is try to spot them as soon as possible and react quickly. In order to do that, we need good observability for our serverless applications and therefore we need to become familiar with services like CloudWatch. If you have tried CloudWatch already, you probably know how powerful but also complex it can be. In this talk, we will approach the topic of observability for serverless applications on AWS. We will discuss best practices and how to be effective with CloudWatch. We will also present our open source tool-kit for observability 'SLIC Watch' which automates away most of the pain of setting up dashboards and alarms in CloudWatch, making it easier to achieve great levels of observability. [...] TIMECODES 00:00 Intro 03:35 Serverless HPC FTW 05:54 A typical case study 07:29 Observability in the cloud 08:14 Can we test our ovservability? 08:55 Alerts flow 09:33 Making sense of alerts 10:23 Initial hypothesis 11:32 Gathering evidence 12:22 Checking timeouts 13:55 Inspecting DynamoDB capacity 14:46 Tracing errors 15:47 HTTP 502 16:50 Lambda CloudWatch logs 17:40 Conclusions 19:51 Before & after 20:25 What we have learned so far 21:09 AWS native observability = CloudWatch 22:08 Alternatives outside AWS 23:21 CloudWatch out of the box 24:32 Getting the best out of CloudWatch 26:33 Best practices 27:00 CloudFormation for CloudWatch alarms 27:18 Can we automate this? 28:10 Intro to SLIC Watch 28:50 How SLIC Watch works 29:48 Before & after SLIC Watch 32:35 Configuration 33:32 How to get started with SLIC Watch 34:51 What if I'm not using serverless framework? 35:18 Roadmap 35:33 Wrap-up 36:10 Outro Read the full abstract here: https://gotoldn.com/2022-eda-aws-day/sessions/2117/observing-all-the-serverless-things RECOMMENDED BOOKS Peter Elger & Eoin Shanaghy • AI as a Service • https://amzn.to/3IqRXrh Clements, Buus, Collina & Elger • Node Cookbook • https://amzn.to/3m2whdy Mario Casciaro & Luciano Mammino • Node.js Design Patterns • https://amzn.to/3KyJLYF Adam Bellemare • Building Event-Driven Microservices • https://amzn.to/3WfNKfM Peter Sbarski • Serverless Architectures on AWS • https://amzn.to/3hJzEUM Michael Stack • Event-Driven Architecture in Golang • https://amzn.to/3G5e8ST Ford, Richards, Sadalage & Dehghani • Software Architecture: The Hard Parts • https://amzn.to/3v4pKQS Gerardus Blokdyk • Event-Driven Architecture EDA • https://amzn.to/3FOfUHE https://twitter.com/GOTOcon https://www.linkedin.com/company/goto- https://www.instagram.com/goto_con https://www.facebook.com/GOTOConferences #EventDrivenArchitecture #EDA #SoftwareArchitecture #AWS #Serverless #EventDriven #Observability #Cloud #CloudNative #DynamoDB #CloudWatch #SLIC #SLICWatch #PeterElger #GuilhermeDallaRosa CHANNEL MEMBERSHIP BONUS Join this channel to get early access to videos & other perks: https://www.youtube.com/channel/UCs_tLP3AiwYKwdUHpltJPuA/join Looking for a unique learning experience? Attend the next GOTO conference near you! Get your ticket at https://gotopia.tech Sign up for updates and specials at https://gotopia.tech/newsletter SUBSCRIBE TO OUR CHANNEL - new videos posted almost daily. https://www.youtube.com/user/GotoConferences/?sub_confirmation=1