#### `spider_max_connections`

- Description: Maximum number of connections from Spider to a remote MariaDB servers. Defaults to `0`, which is no limit.
- Command-line: `--spider-max-connections`
- Scope: Global
- Dynamic: Yes
- Data Type: `numeric`
- Default Session Value: `0`
- Range: `0` to `99999`
- Introduced: MariaDB 10.3.3

#### `master_verify_checksum`

- Description: Verify binlog checksums when reading events from the binlog on the master.
- Commandline: `--master-verify-checksum=[0|1]`
- Scope: Global
- Access Type: Can be changed dynamically
- Data Type: `bool`
- Default Value: `OFF (0)`

#### `ft_min_word_len`

- Description: Minimum length for a word to be included in the MyISAM full-text index. If this variable is changed, the full-text index must be rebuilt in order for the new value to take effect. The quickest way to do this is by issuing a `REPAIR TABLE table_name QUICK` statement. See innodb_ft_min_token_size for the InnoDB equivalent.
- Commandline: `--ft-min-word-len=#`
- Scope: Global
- Dynamic: No
- Data Type: `numeric`
- Default Value: `4`
- Minimum Value: `1`

### `handlersocket_epoll`

- Description: Specify whether to use epoll for I/O multiplexing.
- Commandline: `--handlersocket-epoll="value"`
- Scope: Global
- Dynamic: No
- Type: number
- Valid values:
  - Min: `0`
  - Max: `1`
- Default Value: `1`