Photo credit I was working on a Spring Data Neo4j example application for a community user’s question, and I kept running into the error below when I defined bidirectional relationship in the domain classes. 2023-08-10T13:00:17.341-05:00 ERROR 98493 --- [nio-8080-exec-1] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed: org.springframework.dao.TransientDataAccessResourceException: Server at 408637a4.databases.neo4j.io:7687 is no longer available; Error code 'N/A'] with root cause org.

Photo credit As I was incorporating Kafka to my microservices project, I ran across some trouble updating an entity in Neo4j using Spring Data Neo4j. My data set contains books, authors, book reviews, and users. Based on a new review getting entered into the system, I want to create that review, and then update the related Book entity with an incremented review count and calculate a new average rating. The new review entity was being created with no issues, but I was struggling to get the update to the related Book entity working.

Photo credit I was working on a Spring Data Neo4j microservice application to add a write method for saving a new book review to the database, when I came across the error message below. org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'reactiveTransactionManager' available: No matching TransactionManager bean found for qualifier 'reactiveTransactionManager' - neither qualifier match nor bean name match! The stacktrace was long and ugly, and I had come across this error before…​but I could not remember how I had solved it.