Update 06/04/2023: It’s been 3 years since I originally wrote this blog post and I want to share some updates to my thinking because this blog post was referenced in a recent PR for the serverless-esbuild project. Thanks, Fredrick for messaging me about this. Let me start by saying that the risks I outlined in …
Should you pack the AWS SDK in your deployment artefact? Read More »
Hi, welcome to another weekly update! Let’s welcome back Blue Matador as this month’s sponsor! Blue Matador is monitoring alert automation for AWS and Kubernetes environments. Our proactive alerts take the time and toil out of monitoring. Trying to understand baselines and thresholds, and configuring alerts, especially in black boxes like Lambda and K8s, requires …
Update 17/09/2019: based on feedback, I added a few more alternatives that do not require you to deploy additional Lambda functions to the e2e-test stage. Scroll to the end to find out more. Being event-driven is a key characteristic of a serverless architecture. Often our Lambda functions would publish events to SNS topics or Kinesis …
How to include SNS and Kinesis in your e2e tests Read More »
The use of ephemeral environments is one of the most impactful practices that has co-evolved with serverless. It simplifies your development workflow, makes testing easier, and allows team members to work on multiple features simultaneously. And it doesn’t add any extra cost!
In this post, we will discuss two ways you can use ephemeral environments when working with serverless technologies.
Hi, welcome to another weekly update! I’ve been busy since the last time we were here, and I have lots of cool updates to share with you. New blog posts How to use the power of CloudFormation custom resources for great good. In this post, I described an approach for invoking a Lambda function as …
Disclaimer: if you’re new to CloudFormation custom resources, then I recommend you start by reading this excellent post by Alex Debrie first. Custom resources bring a whole new dimension to CloudFormation and enable some fascinating use cases. For example: provision DataDog dashboards as part of your CloudFormation stack run a load test every time you …
How to use the power of CloudFormation custom resources for great good Read More »
Hi, welcome to another weekly update :-) Let’s welcome Snap.hr as this month’s sponsor! Snap.hr is a transparent job hunting platform built for developers by developers. On Snap.hr, 3rd party recruiters are banned, and companies are always up front about the role and salary. Snap puts developers in the driving seat, so you never feel hassled …
Recently, I have been helping a client implement an event-sourced system. In the process, I put together a very simple demo app to illustrate how one could build such a system using Lambda and DynamoDB. The source code is available on GitHub here. Before you go ahead and read all about the demo app, I …
A simple event-sourcing example with snapshots using Lambda and DynamoDB Read More »
Hi, welcome to another weekly update :-) New posts Getting the most out of CloudWatch Logs. In this post, I took a deep dive into the CloudWatch Logs service, looking at how it works, its features (including metric filters and CloudWatch Logs Insights) as well as limitations. How to do blue-green deployment for Step Functions. …
A client asked me the other day: “What happens to the running executions when I update a state machine?” Sadly, the answer is likely that existing executions would break if you have changed the input/output of the Lambda functions they call. The solution is to use specific versions or aliases of the functions instead. But …
How to do blue-green deployment for Step Functions Read More »
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