Constant lmdb_rs::core::EnvNoMetaSync

pub const EnvNoMetaSync: EnvFlags = EnvFlags{bits: ffi::MDB_NOMETASYNC,}

Flush system buffers to disk only once per transaction, omit the metadata flush. Defer that until the system flushes files to disk, or next non-MDB_RDONLY commit or mdb_env_sync(). This optimization maintains database integrity, but a system crash may undo the last committed transaction. I.e. it preserves the ACI (atomicity, consistency, isolation) but not D (durability) database property. This flag may be changed at any time using mdb_env_set_flags().