Blog

Insights on database engineering, infrastructure, and learning

Platform

Why We Built GritLabs

After 10 years managing 15,000+ databases across 11 datacenters, I was tired of watching talented engineers struggle with the gap between theory and real infrastructure. This is the story of why we built a platform where you learn by doing - on real servers, guided by AI.

March 15, 20268 min read
PostgreSQL

PostgreSQL Streaming Replication: What Every DBA Should Know

Streaming replication is the backbone of PostgreSQL high availability. This post covers WAL shipping, replication slots, synchronous vs asynchronous modes, and the most common pitfalls we see from students in our labs.

March 8, 202610 min read
Learning

7 Learning Modes: One Lab, Seven Ways to Master It

Every GritLabs lab can be run in seven distinct modes - Guided, Challenge, Chaos, Speedrun, Sandbox, Pair, and AI Lab. Each mode develops a different skill. Here is how they work and when to use each one.

February 28, 20269 min read