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1. weathermanweathermanPublic

   A weather forecaster that integrates with Open Weather API and serves multiple users by solving rate limiting.

   Java 3

2. vincivinciPublic

   A microservice-based shopping webapp that uses API-first approach, Spring Boot 3, Kafka 3, Schema Registry, Liquibase, Flyway, gRPC, GraphQL, DGS, etc. with Docker Compose and Kubernetes deployment.

   Java 13 1

3. spring-boot-testcontainersspring-boot-testcontainersPublic

   A project that uses Testcontainers for integration-testing communications between a Spring Boot app and external services such as Postgres, Kafka, and Schema Registry.

   Java

4. raft-consensusraft-consensusPublic

   A simple visualization of Raft Consensus Algorithm that is used by Apache Kafka Raft (KDraft) aka Kafka without Zookeeper. Revised and simplified from https://raft.github.io.

   2

5. touchertoucherPublic

   A travelcard system simulation that processes touch data and produces aggregation output such as successful trips, unprocessable data, and trip summary.

   Java

6. kafka-connect-playgroundkafka-connect-playgroundPublic

   A playground for Kafka Connect. Inspired by "Kafka - The Definitive Guide" by Neha Narkhede, Gwen Shapira, and Todd Palino.