=head1 NAME

RocksDB::BloomFilterPolicy - rocksdb::BloomFilterPolicy object

=head1 SYNOPSIS

  use RocksDB;

  my $bits_per_key = 10;
  my $policy = RocksDB::BloomFilterPolicy->new($bits_per_key);
  my $db = RocksDB->new('/path/to/db', { filter_policy => $policy });

=head1 DESCRIPTION

B<RocksDB::BloomFilterPolicy> is a rocksdb::BloomFilterPolicy object.

=head1 CONSTRUCTOR

=head2 C<< RocksDB::BloomFilterPolicy->new($bits_per_key :Int) :RocksDB::BloomFilterPolicy >>

Return a new filter policy that uses a bloom filter with approximately
the specified number of bits per key.  A good value for $bits_per_key
is 10, which yields a filter with ~ 1% false positive rate.

Note: if you are using a custom comparator that ignores some parts
of the keys being compared, you must not use this class
and must provide your own FilterPolicy that also ignores the
corresponding parts of the keys.  For example, if the comparator
ignores trailing spaces, it would be incorrect to use a
FilterPolicy (like this class) that does not ignore
trailing spaces in keys.

=head1 SEE ALSO

L<RocksDB>, L<RocksDB::FilterPolicy>

=head1 AUTHOR

Jiro Nishiguchi E<lt>jiro@cpan.orgE<gt>

=cut