Free Course — No signup required

Database Internals
in 5 Days

B-trees, write-ahead logging, MVCC, query planning, and storage engines — how databases actually work under the hood.

5 lessons
Self-paced
~60 min/day
Free forever
No account needed
Start Day 1 — Free → See what's covered
What you'll learn

Database Internals in 5 Days

Free 5-day database internals course. B-trees, WAL, MVCC, query planning, and storage engines.

  • Understand B-tree and LSM-tree index structures
  • Explain write-ahead logging and crash recovery
  • Understand MVCC and how isolation levels work
  • Read and interpret query execution plans
  • Compare InnoDB, RocksDB, and WiredTiger storage engines
  • Identify and fix common performance bottlenecks
B-trees
& LSM trees
MVCC
isolation
5
lessons
$0
cost
5-Day Curriculum

Every lesson has a real exercise.
No theory without practice.

01
B-Trees & Index Structures
B-tree layout, node splits, height, clustered vs secondary indexes
B-treeclustered indexnode splits
→
02
Write-Ahead Logging
WAL purpose, LSN, redo/undo logs, checkpoint, crash recovery sequence
WALLSNcheckpoint
→
03
MVCC & Transactions
Snapshot isolation, read views, version chains, vacuum, deadlock detection
MVCCsnapshot isolationvacuum
→
04
Query Planning & Optimization
Parse/plan/execute pipeline, cost model, join strategies, EXPLAIN output
EXPLAINcost modeljoin types
→
05
Storage Engines
InnoDB internals, RocksDB LSM, WiredTiger, pluggable engine architecture
InnoDBRocksDBLSM-tree
→
Get notified

Get the full course in your inbox

Optional. Each lesson delivered daily + updates when we add new content.

Free forever. Unsubscribe anytime. No spam.

Your instructor
B
Bo Peng
Founder, Precision AI Academy

Kaggle Top 200 data scientist. Trained 400+ professionals across universities and federal agencies. Built production systems at scale. This course is practical first — every lesson has working examples and an exercise you can finish in under an hour.

Want to go deeper in 2 days?

Our in-person AI bootcamp covers advanced topics, hands-on labs, and production deployment. Five cities. $1,490.

Reserve Your Seat →