New in version 5.1.2.
Groonga can manage configuration items in each database. These configuration items are persistent. It means that these configuration items are usable after a Groonga process exits.
Configuration is one of these ways. You can change some Groonga behaviors per database by configuration.
A configuration item consists of key and value. Both of key and value are string. The max key size is 4KiB. The max value size is 4091B (= 4KiB - 5B).
You can set a configuration item by config_set.
You can get a configuration item by config_get.
You can delete a configuration item by config_delete.
You can confirm all configuration items by dump.