Introduction This post will examine how the Datomic on-premise peer library handles and responds to network failures. The version tested is 1.0.7075, released 2023-12-18. Datomic uses the Apache Tomcat JDBC Connection Pool for SQL connection management. PostgreSQL is used as the underlying storage in this test. More specifically we will be testing: com.datomic/peer 1.0.7075 ; Released 2023-12-18 org.apache.tomcat/tomcat-jdbc 7.0.109 (bundled by datomic-pro) org.postgresql/postgresql 42.5.1 OpenJDK 64-Bit Server VM Temurin-22+36 (build 22+36, mixed mode, sharing) We will be using nftables to simulate network errors. ...