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Spring AI Interview Questions (2026): ChatClient, RAG, Tool Calling and MCP

39 Spring AI interview questions with direct answers and code for Spring AI 2.0: ChatClient, advisors, chat memory, structured output, RAG, tool calling and MCP.

NewOct 30, 202626 min read

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AI & LLMs

Build an MCP Server in Java with Spring AI 2 (Step by Step)

Build a real MCP server in Java with Spring AI 2.0 and @McpTool: stdio vs Streamable HTTP, testing with curl and the Inspector, connecting Claude, a Spring AI client and security.

NewOct 30, 202619 min read

Java & Spring

Spring Boot 4 New Features: What's New in Boot 4 and Spring Framework 7 (+ Interview Questions)

Every Spring Boot 4 change that matters: API versioning, HTTP service clients, @Retryable, JSpecify, Jackson 3, modular starters, a 3.5 to 4.x migration checklist and 15 interview questions.

NewOct 30, 202621 min read

Data Engineering

Kafka Interview Questions and Answers (2026): Kafka 4, KRaft and Exactly-Once

50+ Kafka interview questions with direct answers: partitions, acks and ISR, KRaft vs ZooKeeper, exactly-once, KIP-848 rebalancing, share groups and Spring Kafka.

NewOct 30, 202624 min read

Data Engineering

Kafka Consumer Groups, Partitions and Rebalancing Explained (Kafka 4, KIP-848)

How Kafka consumer groups split partitions, what an offset commit stores, what triggers a rebalance, eager vs cooperative vs KIP-848, and how to measure lag. Real output from a Kafka 4.4 broker.

NewOct 30, 202620 min read

Data Engineering

Spring Boot Kafka Example: Producer, Consumer, Retries and Dead-Letter Topic (Spring Boot 4)

A runnable Spring Boot 4 Kafka example: KafkaTemplate with keys, @KafkaListener with manual ack, idempotent consumer, @RetryableTopic retries, a dead-letter topic and a Testcontainers test.

NewOct 30, 202618 min read

Data Engineering

Kafka Scenario-Based Interview Questions: Duplicates, Ordering, Lag and Data Loss

24 real-time Kafka scenarios as interviewers ask them, each answered with what is happening, how to diagnose it, the fix and the trade-off.

NewOct 30, 202622 min read

Java & Spring

Java 21 to 25 Features Interview Questions (2026): Virtual Threads, Records, Pattern Matching

Interview questions on Java 21 to 25 features with answers and real output: records, sealed classes, pattern matching, virtual threads, scoped values and what is still preview.

NewOct 30, 202625 min read

Engineering notes, AI guides & tech news

Spring AI Interview Questions (2026): ChatClient, RAG, Tool Calling and MCP

Latest articles

Spring AI RAG Tutorial: Chat with Your Documents Using PGVector

Build an MCP Server in Java with Spring AI 2 (Step by Step)

Spring Boot 4 New Features: What's New in Boot 4 and Spring Framework 7 (+ Interview Questions)

Kafka Interview Questions and Answers (2026): Kafka 4, KRaft and Exactly-Once

Kafka Consumer Groups, Partitions and Rebalancing Explained (Kafka 4, KIP-848)

Spring Boot Kafka Example: Producer, Consumer, Retries and Dead-Letter Topic (Spring Boot 4)

Kafka Scenario-Based Interview Questions: Duplicates, Ordering, Lag and Data Loss

Java 21 to 25 Features Interview Questions (2026): Virtual Threads, Records, Pattern Matching

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