No you don't. But depending on the ORM, some of them batch writes unless you explicitly tell them not to, but will flush when you close the connection. So some programmers will just close the connection because they don't understand the difference or because they've learned that closing the connection guarantees that the data is written.
> So some programmers will just close the connection because they don't understand the difference or because they've learned that closing the connection guarantees that the data is written.
To be fair, this problem isn't limited to databases. Filesystems, even HDDs/SSDs, have been known to readily ignore flush() calls in order to achieve better benchmark results.
