Practical articles on AI, DevOps, Cloud, Linux, and infrastructure engineering.
We have a few hundred shell scripts in production. The patterns that make them survive contact with reality, and the ones we've stopped writing.
Filesystem choice, mount options, IO schedulers — the per-host tweaks that actually moved disk performance for our database and storage workloads.
How processes actually live and die on Linux, the tools that show what's happening, and the patterns we use for monitoring service health.
A practical Linux hardening checklist for production hosts. The settings that earn their place via real production reasons, not the cargo-cult version.
A condensed checklist of the systemd unit-file patterns we now use everywhere, with the production reasons each one matters.
A systematic approach to debugging Linux network issues. The tools that earn their place and the order I use them in.
A practical Linux performance tuning playbook for production servers. The kernel parameters, disk and network tweaks that earn their place, and the ones that turned out to be folklore.
A practical guide to writing and managing systemd services for production. The unit file features that earn their place, plus the operational workflows.
We use CloudFront + Lambda@Edge for specific patterns. The wins, the production gotchas, and where we hit Lambda@Edge's limits.
Postgres, DynamoDB, Redis, Elasticsearch, Snowflake. We use all five for different workloads. The decision criteria, not the marketing comparison.
We've executed real disaster recoveries twice. The plan that survived contact with reality, and what was wrong about the plans we had before that.
VPCs, subnets, route tables, gateways. The mental model that finally made cloud networking click after I stopped trying to map it 1:1 to physical networks.
