I’m absolutely thrilled to tell you about an exciting new feature for the lumigo-cli, the ability to analyze Lambda cold starts. With the new analyze-lambda-cold-starts command, you can analyze cold starts for: all functions in all regions all functions in a single region a single function You can specify how far back you want the …
I’m a long-time user of the Serverless framework and a big fan of its plugin system. It offers tremendous flexibility and there exists a rich ecosystem of community-driven plugins. It’s easily the Serverless framework’s greatest strength and the reason why I keep going back to it. However, I have observed a common pattern where customers …
Where Serverless plugin stops and platform starts Read More »
When you deploy an API to API Gateway, throttling is enabled by default in the stage configurations. By default, every method inherits its throttling settings from the stage. Having built-in throttling enabled by default is great. However, the default method limits – 10k req/s with a burst of 5000 concurrent requests – matches your account …
The API Gateway security risk you need to pay attention to Read More »
Caching is still important for serverless architectures. Just because AWS Lambda auto-scales by traffic, it doesn’t mean we can forget about caching. In this post, let’s break down by caching is still relevant for serverless and where we can apply caching in a serverless architecture. Caching is still VERY relevant. Yes, Lambda auto-scales by traffic. …
All you need to know about caching for serverless applications Read More »
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 »
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 »
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 »
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