I’m Ruslan Tolkachev — a Staff Systems Engineer with over 15 years of enterprise production experience in databases and the systems built around them.

Every database works fine at hello world. The engineering starts when it needs to scale.

That’s where I’ve spent my career — data modeling, query performance, tuning, replication, consistency, transactions, storage engines. But a database that runs well is only half the story. The other half is everything around it — provisioning, deployment, observability, SLOs, disaster recovery, and the operational maturity to tie it all together. MySQL and PostgreSQL are my core, but I also work extensively with Kafka, Elasticsearch, and Redis — and wrapping it all in the operational discipline that keeps it running when it matters most.

I don’t just build systems — I build the teams that own them. Architecture decisions mean nothing without people who understand them, operate them, and make them better over time. And in the age of AI, the difference compounds — a strong engineer with the right tools doesn’t just produce more, they produce logarithmically more. Building great teams has never mattered this much.

What you’ll find on this blog:

• Scaling databases beyond hello world — modeling, performance, and operational patterns
• Resilient infrastructure end to end — from provisioning to disaster recovery
• AI + engineering teams — how the multiplier effect changes everything
• 15 years of enterprise production — what works, what breaks, and why