Welcome 👋️

I’m Mark Wolfe a Software Developer based in Melbourne, Australia.

What you should consider when storing datasets in s3

As an Amazon Web Services (AWS) developer, I am often asked what is the best way to organise datasets in S3. A dataset could comprise data exported by business systems, or data emitted by AWS services, such as CloudFront logs, or CloudTrail logs. Far too often I have seen datasets just dumped into one massive S3 bucket, and left for someone else to tidy up later, however with a little consideration, and empathy for those dealing with this in the future, we can do better than this....

Using a Monorepo to publish Lean Go Packages with Workspaces

As a developer who works with Go in my day-to-day development, I constantly struggle with third party packages or tools which bring in a lot of dependencies. This is especially true when you’re trying to keep your project dependencies up to date, while dependabot, and other security software, is screaming about vulnerabilities in dependencies of dependencies. This is especially a problem with two common packages I use: Any HTTP adaptor package, which ships with integrations for multiple server packages, such as Gin, Echo, and others....

Getting started with AI for developers

As a software developer, I have seen a lot of changes over the years, however few have been as drastic as the rise of artificial intelligence. There are a growing list of tools and services using this technology to help developers with day to day tasks, and speed up their work, however few of these tools help them understand how this technology works, and what it can do. So I wanted to share some of my own tips on how to get started with AI....

Avoid accidental exposure of authenticated Amazon API Gateway resources

I have been working with Amazon API Gateway for a while and one thing I noticed is there are a few options for authentication, which can be confusing to developers, and lead to security issues. This post will cover one of the common security pitfalls with API Gateway and how to mitigate it. If your using AWS_IAM authentication on an API Gateway, then make sure you set the default authorizer for all API resources....

RIP AWS Go Lambda Runtime

Amazon Web Services (AWS) is deprecating the go1.x runtime on Lambda, this is currently scheduled for December 31, 2023. Customers need to migrate their Go based lambda functions to the al2.provided runtime, which uses Amazon Linux 2 as the execution environment. I think this is a bad thing for a couple of reasons: There is no automated migration path from existing Go Lambda functions to the new custom runtime. Customers will need to manually refactor and migrate each function to this new runtime, which this is time-consuming and error-prone....

Stop using IAM User Credentials with Terraform Cloud

I recently started using Terraform Cloud but discovered that the getting started tutorial which describes how to integrate it with Amazon Web Services (AWS) suggested using IAM user credentials. This is not ideal as these credentials are long-lived and can lead to security issues. What is the problem with IAM User Credentials? IAM User Credentials are long lived, meaning once compromised they allow access for a long time They are static, so if leaked it is difficult to revoke access immediately But there are better alternatives, the one I recommend is OpenID Connect (OIDC), which if you dig deep into the Terraform Cloud docs is a supported approach....

Automated Cloud Security Remediation

Recently I have been looking into automated security remediation to understand its impacts, positive and negative. As I am a user of AWS, as well other cloud services, I was particularly interested in how it helped maintain security in these environments. As with anything, it is good to understand what problem it is trying to solve and why it exists in the first place. So firstly what does automated security remediation for a cloud service do?...

My Development Environment

I was inspired by others to document the tools I use working as a software developer professionally, and hacking on side projects out side of work. One thing to note is in my day job I work on an Apple Mac, but my personal machine is a Linux laptop running PopOS. I find using Linux as a desktop works as most software I use is web based or supported on linux....

Diving into AWS Billing Data

Billing is an integral part of day to day AWS account operation, and to most it seems like a chore, however there is a lot to be learnt interacting with AWS Billing data. So why would you ever want to dive into AWS Billing data in the first place? It is pretty easy for both novices, and experience developers to rack up a sizable bill in AWS, part of the learning experience is figuring out how this happened....

GitHub Actions supply chain attacks

There has been a lot of press about supply chain attacks recently, these type of attacks are nothing new and understanding them is really important for developers using services such as GitHub Actions, given Continuos integration (CI) tools are a critical part of supply chain used in software projects. A supply chain attack targets less secure parts of the development process, this could be the tools and services you depend on, or the docker containers you host your software in....