Welcome to sjramblings.io
Personal blog about Technology, AWS, and software development. Sharing insights, tutorials, and experiences from the world of software engineering.
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AWS Finally Launches Nested Virtualisation on EC2: Better Late Than Never
If you’ve ever needed to run a hypervisor inside an EC2 instance, you know the pain. For years, the answer from AWS was simple: buy a bare metal instance. That meant paying for an i3.metal or m5.metal just to get access to hardware virtualisation extensions. Need to test a Firecracker microVM setup? Bare metal. Want to run KVM for a security sandbox? Bare metal. Running nested Hyper-V for a Windows lab? You guessed it.
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Building Your Own AI Agent Stack. What I Learned From 10 Open Source Projects
I spent the last week falling down a rabbit hole. Not the productive kind where you emerge with a working solution and a sense of accomplishment. The kind where you save ten GitHub repos in a single week and then sit back and realise they’re all telling you the same thing.
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Build vs. Buy Just Flipped. Most Teams Haven't Noticed Yet.
The Decision You’ve Been Making on Autopilot Every AWS practitioner has a version of this conversation at least once a quarter. Someone on the team suggests building something custom. Someone else points out there’s a managed service or SaaS product that does it already. The room does the mental maths: engineering time, ongoing maintenance, opportunity cost. Nine times out of ten, you buy.
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Your Inference Bill Is Going Up. Even as Costs Go Down.
The Number That Should Worry You AWS raised GPU Capacity Block prices by 15% on a Saturday in January. No blog post. No announcement. Just a quiet update to the pricing page that said prices were “scheduled to be updated” without mentioning which direction.
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