Author name: strider

Overview Distributed tracing for AdventureTube microservices using Micrometer Tracing + Brave + Zipkin. Zero Java code changes — Spring Boot […]

Date: 2026-02-27 Context After converting auth-service from Servlet (Spring MVC) to WebFlux, 80-90% of the code is reactive/async. But 10-20%

Overview Migrating Spring Security from the Servlet stack (Tomcat) to the Reactive stack (WebFlux/Netty) is the hardest part of a

Routing rule: All writes (create/update/delete) go through Auth Service. All reads go through Web Service. Geospatial Service is internal only.

Branch: feature/circuit-breaker (merged to main) Commit: 241481b Date: 2026-02-26 Library: Resilience4j 2.2.0 via Spring Cloud Circuit Breaker 3.2.0 Problem Auth-service

Problem When auth-service called member-service and got a 4xx error (e.g. USER_NOT_FOUND on second delete), the circuit breaker treated it

Goal: Route all geo writes through Auth Service, enforce content ownership via JWT email matching, and return SSE streams for

1. Backend — Implemented (2026-03-09) Status: COMPLETED — All Tests Passing Merged to main via commit 99ea583 (branch feature/kafka-job-status-sse). 42

Overview The adventureTubeData MongoDB collection is the core geospatial dataset powering both iOS and Web clients. It contains 39 documents

1. Why Kafka Over Other Message Brokers AdventureTube uses Apache Kafka for asynchronous messaging between microservices. Here’s why Kafka was