repository

type Repository interface {
	// Postgre
	AddMember(username, group, guildID string) error
	RemoveMember(username, group, guildID string) error
	CheckIsMember(username, group, guildID string) error
	GetRandomMember(group, guildID string) (string, error)
	GetMembers(group, guildID string) ([]string, error)

	// Redis
	SetCache(username []string, group, guildID string) error
	IsMember(username, group, guildID string) (bool, error)
	RandomMember(group, guildID string) (string, error)
}