# Let the DBI cache your handles

- ## Sometimes it's not easy to hold all your handles

  - e.g., library code to lookup values from the database

- ## The prepare_cached() method gives you a client side statement handle cache:

  sub lookup_foo {
  my ($dbh, $id) = @_;
  $sth = $dbh->prepare_cached("select foo from table where id=?");
  return $dbh->selectrow_array($sth, $id);
  }

- ## Can avoid the need for global statement handle variables

  - which can cause problems in some situations, see later

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