How to use the Spring Boot Interview Flashcards
- 1. Choose topicsPick one topic or all of them, a round size, and whether to skip cards you already know.
- 2. Flip and gradeRead the question, answer aloud, then reveal the answer and mark it known or still learning.
- 3. Review your resultsMissed cards come back later in the round. At the end see your score by topic and download the cards to revise.
What the deck covers
The deck covers Spring Boot 3, the version most current projects and interviews use, from what the main annotation does to the N+1 query problem. The 22 cards are grouped into 9 topics: Basics, Core, Config, REST, Data, Ops, Testing, Security, Microservices. Answers are short on purpose: one or two sentences you can say out loud, which you then back up with an example from your own projects.
A card from the deck
Q: What is the N+1 query problem?
A: Loading a list and then lazily loading a relation for each item runs 1 + N queries. Fix it with JOIN FETCH, an @EntityGraph or batch fetching.
Interviewers like this one because it shows real experience: explain how you'd spot it in logs and which fix you'd choose.
How to study with it
- Know the layer annotations by drawing your project's controller → service → repository flow.
- Be ready to explain why @Transactional doesn't work on a self-invoked method.
- In the Spring Boot deck, cards you mark "still learning" come back three cards later in the same round, and the results screen lists them so you can download a revision sheet.
More questions from this deck
Other Spring Boot questions you'll meet include:
- What does @SpringBootApplication combine?
- What is dependency injection?
- @Component vs @Service vs @Repository vs @Controller?
- How do you return a 201 with a body?
- What does JpaRepository give you?
Frequently asked questions
Does it cover microservices?
One card introduces Spring Cloud; the rest focus on a single service.
Spring Boot 2 or 3?
Spring Boot 3, though most answers apply to 2 as well.
Are the Spring Boot interview flashcards free?
Yes. You can flip through every card of the Spring Boot interview flashcards without signing up. When you open your results for the first time, we ask once for your name and WhatsApp number; after that the Spring Boot interview flashcards and every other Uncodemy tool open straight away.