Unexpected heap growth during sustained write transactions despite stable page cache usage
The goal is to understand why Neo4j exhibits a steady increase in on‑heap memory while the off‑heap page cache size stays constant during sustained write‑heavy transactions. The environment uses the default dbms.memory.pagecache.size setting (≈50 % of RAM) and exposes JMX metrics such as neo4j.memory.heap.used and neo4j.pagecache.memory.used for observation.
neo4j