lpers->isDev() && 80 < mb_strlen( $key, 'UTF-8' ) ) {
			throw new \Exception( 'You are using a cache key that is too large, shorten your key and try again: [' . esc_html( $key ) . ']' );
		}

		return $key;
	}

	/**
	 * Clears all of our cache.
	 *
	 * @since 4.1.5
	 *
	 * @return void
	 */
	public function clear() {
		if ( $this->prefix ) {
			$this->clearPrefix( '' );

			return;
		}

		// If we find the activation redirect, we'll need to reset it after clearing.
		$activationRedirect = $this->get( 'activation_redirect' );

		aioseo()->core->db->truncate( $this->table )->run();

		$this->clearStatic();

		if ( $activationRedirect ) {
			$this->update( 'activation_redirect', $activationRedirect, 30 );
		}

		// Bust the tableExists and columnExists cache.
		aioseo()->internalOptions->database->installedTables = '';
	}

	/**
	 * Clears all of our cache under a certain prefix.
	 *
	 * @since 4.1.5
	 *
	 * @param  string $prefix A prefix to clear or empty to clear everything.
	 * @return void
	 */
	public function clearPrefix( $prefix ) {
		$prefix = $this->prepareKey( $prefix );

		aioseo()->core->db->delete( $this->table )
			->whereRaw( "`key` LIKE '$prefix%'" )
			->run();

		$this->clearStaticPrefix( $prefix );
	}

	/**
	 * Clears all of our static in-memory cache of a prefix.
	 *
	 * @since 4.1.5
	 *
	 * @param  string $prefix A prefix to clear.
	 * @return void
	 */
	private function clearStaticPrefix( $prefix ) {
		$prefix = $this->prepareKey( $prefix );
		foreach ( array_keys( self::$cache ) as $key ) {
			if ( 0 === strpos( $key, $prefix ) ) {
				unset( self::$cache[ $key ] );
			}
		}
	}

	/**
	 * Clears all of our static in-memory cache.
	 *
	 * @since 4.1.5
	 *
	 * @param  string $key A key to clear.
	 * @return void
	 */
	private function clearStatic( $key = null ) {
		if ( empty( $key ) ) {
			self::$cache = [];

			return;
		}

		unset( self::$cache[ $this->prepareKey( $key ) ] );
	}

	/**
	 * Clears all of our static in-memory cache or the cache for a single given key.
	 *
	 * @since 4.7.1
	 *
	 * @param  string $key   A key to clear (optional).
	 * @param  string $value A value to update (optional).
	 * @return void
	 */
	private function updateStatic( $key = null, $value = null ) {
		if ( empty( $key ) ) {
			$this->clearStatic( $key );

			return;
		}

		self::$cache[ $this->prepareKey( $key ) ] = $value;
	}

	/**
	 * Returns the cache table name.
	 *
	 * @since 4.1.5
	 *
	 * @return string
	 */
	public function getTableName() {
		return $this->table;
	}
}