04 · Concept
Serializable isolation
Every check passed. How did user 42 send ₹1,20,000 against a ₹1 lakh limit?
0%complete
- 60-second storyOne idea per card. Tap through it like stories.(done)
- Quick checkTap an answer, get instant feedback.(done)
- Go deeper2 build-up diagrams and 4 “you’re the candidate” moments.(done)
- Full breakdownThe complete breakdown, every number and figure.(done)
Questions this topic answers
- Every check passed. How did user 42 send ₹1,20,000 against a ₹1 lakh limit?
- A read-only report printed a total no one-at-a-time order could produce. How?
- Same guarantee, same benchmark. Why did locking manage under half the throughput?
- How does PostgreSQL stop write skew without ever making a reader wait?