Databases Advanced
Partition Tradeoff Commander
Choose explicit consistency or availability behavior for concrete network-partition scenarios.
- Time
- 7-10 minutes
- Concept
- CAP theorem and partition-time tradeoffs
Practice path · 8 games
Database Reliability
Reason about partitions, replica lag, recovery objectives, deadlocks, isolation, and safe schema evolution.
For learners preparing to operate stateful production systems.
Start this path01
02
Databases Advanced
Replica Consistency Router
Route reads across primary and replicas while respecting lag, freshness contracts, failover, and workload isolation.
- Time
- 8-12 minutes
- Concept
- Read replicas and consistency-aware routing
03
Databases Advanced
Database Engine & Capacity Lab
Connect durability, MVCC, plan evidence, and connection budgets.
- Time
- 10-12 minutes
- Concept
- database engine capacity
04
Databases Advanced
Database Failover & Contention War Room
Recover pool, lock, replication, and failover incidents without losing business truth.
- Time
- 10-12 minutes
- Concept
- database failover and contention
05
Databases Intermediate
Recovery Objective Drill
Translate RPO and RTO into backup, point-in-time recovery, restore testing, and isolation decisions.
- Time
- 7-10 minutes
- Concept
- Database backup and restore objectives
06
Databases Advanced
Deadlock Detective
Read waits-for cycles, choose safe victims, retry complete transactions, and prevent recurring deadlocks.
- Time
- 7-11 minutes
- Concept
- Database deadlocks and lock ordering
07
Databases Advanced
Transaction Isolation Arena
Defend database invariants from concurrent requests by choosing transactions, locks, constraints, snapshot reads, and optimistic concurrency.
- Time
- 7-10 minutes
- Concept
- Database transactions, isolation anomalies, locks, and invariant protection
08
Databases Intermediate
Schema Migration Runbook
Choose safe zero-downtime database migration steps for expanding schemas, backfilling data, rolling out indexes, enforcing constraints, and recovering from failures.
- Time
- 6-9 minutes
- Concept
- Zero-downtime schema migration planning and expand-contract releases