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CommandHashStrategyInterface.php
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<?php /* * This file is part of the Predis package. * * (c) Daniele Alessandri <suppakilla@gmail.com> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Predis\Cluster; use Predis\Command\CommandInterface; /** * Interface for classes defining the strategy used to calculate an hash * out of keys extracted from supported commands. * * This is mostly useful to support clustering via client-side sharding. * * @author Daniele Alessandri <suppakilla@gmail.com> */ interface CommandHashStrategyInterface { /** * Returns the hash for the given command using the specified algorithm, or null * if the command cannot be hashed. * * @param CommandInterface $command Command to be hashed. * @return int */ public function getHash(CommandInterface $command); /** * Returns the hash for the given key using the specified algorithm. * * @param string $key Key to be hashed. * @return string */ public function getKeyHash($key); }
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