Today you ship the production database tier for the infrastructure stack you’ve been assembling. This is one of the highest-stakes sessions in the series because every architectural decision here has a direct, measurable cost when something goes wrong at 2 AM.
Today’s agenda:
Deploy a primary-replica database cluster with real replication mechanics
Build a backup pipeline that actually verifies its own restores
Stand up a monitoring layer that measures what it claims to measure
Wire in a performance tuning advisor that reads real query plans
Connect everything to a production-grade control plane dashboard
Last session (Day 148) you configured load balancing, SSL, and CDN at the edge. Today you go one tier deeper — the database. Tomorrow (Day 150) you deploy the application on top of what you build here.
Think of this week as building a three-tier sandwich: Day 148 = the crust (edge/CDN), Day 149 = the filling (database), Day 150 = the top layer (application). The crust protects, the filling is what users are actually paying for, and the top layer is what they touch. If today’s tier goes down, everything above it goes with it.
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