mariadb-connector-r2dbc-usage

MariaDB-specific behavior of MariaDB Connector/R2DBC (the org.mariadb:r2dbc-mariadb reactive driver implementing the R2DBC SPI) for application code — that the URL scheme is r2dbc:mariadb://user:pw@host:port/db and factories come from ConnectionFactories.get(url) or a MariadbConnectionConfiguration builder; that placeholders are positional ? bound 0-indexed or named :name; that NOTHING runs until the Publisher returned by Statement.execute() is subscribed, and a Result can be consumed exactly once; that bindNull(index, Class) needs an explicit type; that autocommit defaults to true and useServerPrepStmts to false; that transactions return Mono<Void> that must itself be subscribed; that pooling is not built in and needs r2dbc-pool; and that errors arrive as onError signals (R2dbcException), not thrown exceptions. Use when writing or reviewing Java code that talks to MariaDB reactively via R2DBC.