intermittent connectivity issues w/ Sandbox

[whatSocks]

Guidelines

• Neo4j version: Sandbox Recommendations - 3.5.117, Enterprise

• Neo4j Mode: Sandbox Recommendations

• Driver version: 4.0.0

• Operating system: Mac OS Catalina

• Steps to reproduce

• Expected behavior

• Connect to the Recommendations (movies, genres, actors etc) sandbox using the driver

• make about 5 queries for movies and movies by genre (loading a page with movies by genre)

• receive results

• Actual behavior

• Connect to the Recommendations (movies, genres, actors etc) sandbox using the driver

• make about 5 queries for movies and genres

• receive some results, other times receive

  neo4j.exceptions.ServiceUnavailable: Failed to read from defunct connection IPv4Address(('34.227.92.130', 34260)) (IPv4Address(('34.227.92.130', 34260)))

[martin-neotech]

@whatSocks Hi could you please add a code snippet.

It is normal in network applications that a connection could die and then you have to catch the error and do another query.

Please read this article. https://medium.com/neo4j/try-and-then-retry-there-can-be-failure-30bf336383da