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1 efrain 1 
<?php
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namespace Aws\DynamoDb;
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/**
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 * The session connection provides the underlying logic for interacting with
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 * Amazon DynamoDB and performs all of the reading and writing operations.
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 */
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interface SessionConnectionInterface
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{
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    /**
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     * Reads session data from DynamoDB
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     *
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     * @param string $id Session ID
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     *
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     * @return array
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     */
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    public function read($id);
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    /**
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     * Writes session data to DynamoDB
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     *
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     * @param string $id        Session ID
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     * @param string $data      Serialized session data
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     * @param bool   $isChanged Whether or not the data has changed
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     *
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     * @return bool
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     */
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    public function write($id, $data, $isChanged);
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    /**
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     * Deletes session record from DynamoDB
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     *
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     * @param string $id Session ID
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     *
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     * @return bool
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     */
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    public function delete($id);
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    /**
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     * Performs garbage collection on the sessions stored in the DynamoDB
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     *
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     * @return bool
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     */
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    public function deleteExpired();
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}