12 decks, 264 cards, one rule: write the answer before you turn the card over.

Recognising an answer feels like knowing it. Producing one is the part that holds up under questioning.

• 264 cardsEverything, shuffledAll 12 decks interleaved — the honest test

  StudyPrint
• 16 cardsReact 19Actions, Server Components, and the 19.2 additions

  StudyPrintExportHide
• 12 cardsCAP theoremPartitions, trade-offs, and PACELC

  StudyPrintExportHide
• 12 cardsACIDTransactions, isolation levels, and MVCC

  StudyPrintExportHide
• 16 cardsSOLIDDesign principles, and where they cost more than they pay

  StudyPrintExportHide
• 24 cardsAuth and sessionsSessions, tokens, OAuth and OTP flows, with the browser details interviewers probe.

  StudyPrintExportHide
• 24 cardsIdempotency, retries and webhooksSafe repeats, at-least-once delivery, and the patterns that keep money and SIMs consistent.

  StudyPrintExportHide
• 32 cardsKafkaPartitions, consumer groups, and what to say in the interview

  StudyPrintExportHide
• 24 cardsNext.js App RouterRouting, rendering and file conventions in the App Router, weighted to 15→16.3.

  StudyPrintExportHide
• 24 cardsNext.js caching and data fetchingThe caching layers, the use cache model, and fetching patterns from 15 to 16.3.

  StudyPrintExportHide
• 24 cardsReact in PracticePatterns and conventions for senior React work

  StudyPrintExportHide
• 24 cardsTypeScript 5.8-7.0Releases, dates, breaking changes and what's next

  StudyPrintExportHide
• 32 cardsTypeScript in practiceType-system mechanics and applied React/Next.js typing

  StudyPrintExportHide