Transactions & Concurrency
ACID, schedules, serializability and locking — what happens when two people write at the same moment.
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What commit and rollback do
Foundation
- Not triedWhat commit and rollback doFoundation
- Not triedWhat is a transaction?Foundation
- Not triedWhy a transfer needs a transactionFoundation
- Not triedNaming the anomalyCore
- Not triedTwo transactions waiting for each otherCore
- Not triedWhat a transaction does not promiseCore
- Not triedWhich ACID property was broken?Core
- Not triedWhy the database writes everything twiceCore
- Not triedLocking a row, or checking a versionChallenge
- Not triedThe service that stops answering under loadChallenge
- Not triedThe transaction that stayed open for a minuteChallenge
- Not triedTwo people spend the same balanceChallenge
- Not triedWhich isolation level does whatChallenge