每天laravel-20160625|RedisStore
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<?php namespace Illuminate\Cache; use Illuminate\Contracts\Cache\Store; use Illuminate\Redis\Database as Redis; // a namespace to enough class RedisStore extends TaggableStore implements Store {// a Store about use in Redis /** * The Redis database connection. * * @var \Illuminate\Redis\Database */ protected $redis;// The Redis database connection,it is a connection instance // a instance about redis /** * A string that should be prepended to keys. * * @var string */ protected $prefix;// a prefix key, it is a string that should be prepended to keys. /** * The Redis connection that should be used. * * @var string */ protected $connection;// a connection to redis, // The Redis connection that should be used. /** * Create a new Redis store. * * @param \Illuminate\Redis\Database $redis * @param string $prefix * @param string $connection * @return void */ public function __construct(Redis $redis, $prefix = ‘‘, $connection = ‘default‘) { $this->redis = $redis; $this->setPrefix($prefix); $this->connection = $connection; }// Create a new Redis store. // set a big data, new a instance, set a prefix, a connection way or a type /** * Retrieve an item from the cache by key. * * @param string|array $key * @return mixed */ public function get($key) { if (! is_null($value = $this->connection()->get($this->prefix.$key))) { return is_numeric($value) ? $value : unserialize($value); } }// Retrieve an item from the cache by key. // get value by key. /** * Retrieve multiple items from the cache by key. * get many items by key. from the cache * Items not found in the cache will have a null value. * can‘t found , so back a null value. * @param array $keys * @return array */ public function many(array $keys) { $return = [];// a store array $prefixedKeys = array_map(function ($key) { return $this->prefix.$key; }, $keys);// get keys by key and prefix from the array_map method. $values = $this->connection()->mget($prefixedKeys);// get a value by keys array foreach ($values as $index => $value) { $return[$keys[$index]] = is_numeric($value) ? $value : unserialize($value); }// reset $values to $return , check is a number return $return; }// get a lots of value from cache by keys. /** * Store an item in the cache for a given number of minutes. * * @param string $key * @param mixed $value * @param int $minutes * @return void */ public function put($key, $value, $minutes)// Store an item in the cache for a given number of minutes { $value = is_numeric($value) ? $value : serialize($value);// set number or string $minutes = max(1, $minutes);// set minutes not a second $this->connection()->setex($this->prefix.$key, $minutes * 60, $value);// use a api function }// put a values to cache minutes /** * Store multiple items in the cache for a given number of minutes. * * @param array $values * @param int $minutes * @return void */ public function putMany(array $values, $minutes)// Store multiple items in the cache for a given number of minutes. { $this->connection()->multi();// set multi method foreach ($values as $key => $value) { $this->put($key, $value, $minutes);// use a put method } $this->connection()->exec();// to done } /** * Increment the value of an item in the cache. * * @param string $key * @param mixed $value * @return int */ public function increment($key, $value = 1)// Increment the value of an item in the cache. { return $this->connection()->incrby($this->prefix.$key, $value); }// use api to increment /** * Decrement the value of an item in the cache. * * @param string $key * @param mixed $value * @return int */ public function decrement($key, $value = 1)// Decrement the value of an item in the cache. { return $this->connection()->decrby($this->prefix.$key, $value);// a de crby is a api } /** * Store an item in the cache indefinitely. * * @param string $key * @param mixed $value * @return void */ public function forever($key, $value)// Store an item in the cache indefinitely. { $value = is_numeric($value) ? $value : serialize($value);// $value is check $this->connection()->set($this->prefix.$key, $value);// set a keys and values } /** * Remove an item from the cache. * * @param string $key * @return bool */ public function forget($key) { return (bool) $this->connection()->del($this->prefix.$key); }// Remove an item from the cache. use a api method del /** * Remove all items from the cache. * * @return void */ public function flush() { $this->connection()->flushdb();// use api }// Remove all items from the cache. /** * Begin executing a new tags operation. * * @param array|mixed $names * @return \Illuminate\Cache\RedisTaggedCache */ public function tags($names)// begin executing a new tags { return new RedisTaggedCache($this, new TagSet($this, is_array($names) ? $names : func_get_args())); }// a new tags /** * Get the Redis connection instance. * * @return \Predis\ClientInterface */ public function connection()// Get the redis connection instance. { return $this->redis->connection($this->connection);// this is a connection to connection redis } /** * Set the connection name to be used. * * @param string $connection * @return void */ public function setConnection($connection) { $this->connection = $connection; }// Set the connection name to be used. a big set /** * Get the Redis database instance. * * @return \Illuminate\Redis\Database */ public function getRedis() { return $this->redis; }// Get the Redis database instance. // a big __get /** * Get the cache key prefix. * * @return string */ public function getPrefix() { return $this->prefix; }// Get the cache key prefix. /** * Set the cache key prefix. * * @param string $prefix * @return void */ public function setPrefix($prefix) { $this->prefix = ! empty($prefix) ? $prefix.‘:‘ : ‘‘; }// Set the cache key prefix. }
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