I landed a "devops" role as a junior

I landed a "devops" role as a junior

30K\~ DAU, I have full ownership over an infra under AWS/multiple on premise servers.

we use ECS, terraform, instead of ansible I use a deploy.sh that i give to my boxes with terraform, no graceful deploys. we have our own orchestrator (K8S like) for stateful containers that we have to spin up and down very often (median 1 min of uptime per container) with unsafe code coming from AI/users.

I took the place of someone who left that company and explained me nothing, we are 2 devs, nobody understands how this entire infra works expect me. have been adding observability a lot using cloudwatch, multiple alerts so I page myself at the right times, it's stable but we need to scale to at least 5x (an objective the hierarchy gave me). it currently costs 3.5k/month in aws/on premise servers.

btw it's not a classical rest api where you run stateless apis and that's it.

I just discovered how redis worked under a distributed system like this, it's quite good :) I have been a postgresql guy but redis has been a saver for our threat model.

I often read here that you should put everything : EKS + K8S, ansible, terraform, make HA, grafana etc.. but since I manage this entire infra I have been resilient to all of this. If I refactor everything right now they have nobody to do the backend (which is also what I do here) -> "startup" role where one guy has multiple roles.

for the terraform it's all AI, I have been doing a lot of modifications and have cr