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When designing software systems, there is always a trade-off for each architectural decision you make. Traditionally, achieving HA (High Availability) in your services came at a great cost, which directly translates to a huge monetary investment. However, most cloud vendors offer an instance pricing model that fits variable workloads, like Amazon EC2 Spot Instances, Google Cloud Preemptible VMs or Azure Low-Priority VMs. That’s what we could call “Cheap Instances”.

What is a Cheap Instance?

At MindDoc, we use preemptible VMs that are automatically auto balanced by Google in our Kubernetes cluster based on CPU load and memory usage, which are 80% cheaper than a regular VM. …

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Darío Blanco

CTO at MindDoc (Schoen Digital Labs)

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