[Cache] Add LRU + max-lifetime capabilities to ArrayCache
This commit is contained in:
parent
b350c80fc3
commit
48a5d5e8a9
@ -15,10 +15,15 @@ use Psr\Cache\CacheItemInterface;
|
||||
use Psr\Log\LoggerAwareInterface;
|
||||
use Psr\Log\LoggerAwareTrait;
|
||||
use Symfony\Component\Cache\CacheItem;
|
||||
use Symfony\Component\Cache\Exception\InvalidArgumentException;
|
||||
use Symfony\Component\Cache\ResettableInterface;
|
||||
use Symfony\Contracts\Cache\CacheInterface;
|
||||
|
||||
/**
|
||||
* An in-memory cache storage.
|
||||
*
|
||||
* Acts as a least-recently-used (LRU) storage when configured with a maximum number of items.
|
||||
*
|
||||
* @author Nicolas Grekas <p@tchwork.com>
|
||||
*/
|
||||
class ArrayAdapter implements AdapterInterface, CacheInterface, LoggerAwareInterface, ResettableInterface
|
||||
@ -29,13 +34,25 @@ class ArrayAdapter implements AdapterInterface, CacheInterface, LoggerAwareInter
|
||||
private $values = [];
|
||||
private $expiries = [];
|
||||
private $createCacheItem;
|
||||
private $maxLifetime;
|
||||
private $maxItems;
|
||||
|
||||
/**
|
||||
* @param bool $storeSerialized Disabling serialization can lead to cache corruptions when storing mutable values but increases performance otherwise
|
||||
*/
|
||||
public function __construct(int $defaultLifetime = 0, bool $storeSerialized = true)
|
||||
public function __construct(int $defaultLifetime = 0, bool $storeSerialized = true, int $maxLifetime = 0, int $maxItems = 0)
|
||||
{
|
||||
if (0 > $maxLifetime) {
|
||||
throw new InvalidArgumentException(sprintf('Argument $maxLifetime must be a positive integer, %d passed.', $maxLifetime));
|
||||
}
|
||||
|
||||
if (0 > $maxItems) {
|
||||
throw new InvalidArgumentException(sprintf('Argument $maxItems must be a positive integer, %d passed.', $maxItems));
|
||||
}
|
||||
|
||||
$this->storeSerialized = $storeSerialized;
|
||||
$this->maxLifetime = $maxLifetime;
|
||||
$this->maxItems = $maxItems;
|
||||
$this->createCacheItem = \Closure::bind(
|
||||
static function ($key, $value, $isHit) use ($defaultLifetime) {
|
||||
$item = new CacheItem();
|
||||
@ -84,6 +101,13 @@ class ArrayAdapter implements AdapterInterface, CacheInterface, LoggerAwareInter
|
||||
public function hasItem($key)
|
||||
{
|
||||
if (\is_string($key) && isset($this->expiries[$key]) && $this->expiries[$key] > microtime(true)) {
|
||||
if ($this->maxItems) {
|
||||
// Move the item last in the storage
|
||||
$value = $this->values[$key];
|
||||
unset($this->values[$key]);
|
||||
$this->values[$key] = $value;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
CacheItem::validateKey($key);
|
||||
@ -97,7 +121,12 @@ class ArrayAdapter implements AdapterInterface, CacheInterface, LoggerAwareInter
|
||||
public function getItem($key)
|
||||
{
|
||||
if (!$isHit = $this->hasItem($key)) {
|
||||
$this->values[$key] = $value = null;
|
||||
$value = null;
|
||||
|
||||
if (!$this->maxItems) {
|
||||
// Track misses in non-LRU mode only
|
||||
$this->values[$key] = null;
|
||||
}
|
||||
} else {
|
||||
$value = $this->storeSerialized ? $this->unfreeze($key, $isHit) : $this->values[$key];
|
||||
}
|
||||
@ -164,7 +193,9 @@ class ArrayAdapter implements AdapterInterface, CacheInterface, LoggerAwareInter
|
||||
$value = $item["\0*\0value"];
|
||||
$expiry = $item["\0*\0expiry"];
|
||||
|
||||
if (null !== $expiry && $expiry <= microtime(true)) {
|
||||
$now = microtime(true);
|
||||
|
||||
if (null !== $expiry && $expiry <= $now) {
|
||||
$this->deleteItem($key);
|
||||
|
||||
return true;
|
||||
@ -173,7 +204,23 @@ class ArrayAdapter implements AdapterInterface, CacheInterface, LoggerAwareInter
|
||||
return false;
|
||||
}
|
||||
if (null === $expiry && 0 < $item["\0*\0defaultLifetime"]) {
|
||||
$expiry = microtime(true) + $item["\0*\0defaultLifetime"];
|
||||
$expiry = $item["\0*\0defaultLifetime"];
|
||||
$expiry = $now + ($expiry > ($this->maxLifetime ?: $expiry) ? $this->maxLifetime : $expiry);
|
||||
} elseif ($this->maxLifetime && (null === $expiry || $expiry > $now + $this->maxLifetime)) {
|
||||
$expiry = $now + $this->maxLifetime;
|
||||
}
|
||||
|
||||
if ($this->maxItems) {
|
||||
unset($this->values[$key]);
|
||||
|
||||
// Iterate items and vacuum expired ones while we are at it
|
||||
foreach ($this->values as $k => $v) {
|
||||
if ($this->expiries[$k] > $now && \count($this->values) < $this->maxItems) {
|
||||
break;
|
||||
}
|
||||
|
||||
unset($this->values[$k], $this->expiries[$k]);
|
||||
}
|
||||
}
|
||||
|
||||
$this->values[$key] = $value;
|
||||
@ -210,14 +257,20 @@ class ArrayAdapter implements AdapterInterface, CacheInterface, LoggerAwareInter
|
||||
public function clear(string $prefix = '')
|
||||
{
|
||||
if ('' !== $prefix) {
|
||||
$now = microtime(true);
|
||||
|
||||
foreach ($this->values as $key => $value) {
|
||||
if (0 === strpos($key, $prefix)) {
|
||||
if (!isset($this->expiries[$key]) || $this->expiries[$key] <= $now || 0 === strpos($key, $prefix)) {
|
||||
unset($this->values[$key], $this->expiries[$key]);
|
||||
}
|
||||
}
|
||||
} else {
|
||||
$this->values = $this->expiries = [];
|
||||
|
||||
if ($this->values) {
|
||||
return true;
|
||||
}
|
||||
}
|
||||
|
||||
$this->values = $this->expiries = [];
|
||||
|
||||
return true;
|
||||
}
|
||||
@ -258,8 +311,20 @@ class ArrayAdapter implements AdapterInterface, CacheInterface, LoggerAwareInter
|
||||
{
|
||||
foreach ($keys as $i => $key) {
|
||||
if (!$isHit = isset($this->expiries[$key]) && ($this->expiries[$key] > $now || !$this->deleteItem($key))) {
|
||||
$this->values[$key] = $value = null;
|
||||
$value = null;
|
||||
|
||||
if (!$this->maxItems) {
|
||||
// Track misses in non-LRU mode only
|
||||
$this->values[$key] = null;
|
||||
}
|
||||
} else {
|
||||
if ($this->maxItems) {
|
||||
// Move the item last in the storage
|
||||
$value = $this->values[$key];
|
||||
unset($this->values[$key]);
|
||||
$this->values[$key] = $value;
|
||||
}
|
||||
|
||||
$value = $this->storeSerialized ? $this->unfreeze($key, $isHit) : $this->values[$key];
|
||||
}
|
||||
unset($keys[$i]);
|
||||
@ -314,8 +379,12 @@ class ArrayAdapter implements AdapterInterface, CacheInterface, LoggerAwareInter
|
||||
$value = false;
|
||||
}
|
||||
if (false === $value) {
|
||||
$this->values[$key] = $value = null;
|
||||
$value = null;
|
||||
$isHit = false;
|
||||
|
||||
if (!$this->maxItems) {
|
||||
$this->values[$key] = null;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
@ -1,6 +1,11 @@
|
||||
CHANGELOG
|
||||
=========
|
||||
|
||||
5.1.0
|
||||
-----
|
||||
|
||||
* added max-items + LRU + max-lifetime capabilities to `ArrayCache`
|
||||
|
||||
5.0.0
|
||||
-----
|
||||
|
||||
|
@ -55,4 +55,36 @@ class ArrayAdapterTest extends AdapterTestCase
|
||||
$this->assertArrayHasKey('bar', $values);
|
||||
$this->assertNull($values['bar']);
|
||||
}
|
||||
|
||||
public function testMaxLifetime()
|
||||
{
|
||||
$cache = new ArrayAdapter(0, false, 1);
|
||||
|
||||
$item = $cache->getItem('foo');
|
||||
$item->expiresAfter(2);
|
||||
$cache->save($item->set(123));
|
||||
|
||||
$this->assertTrue($cache->hasItem('foo'));
|
||||
sleep(1);
|
||||
$this->assertFalse($cache->hasItem('foo'));
|
||||
}
|
||||
|
||||
public function testMaxItems()
|
||||
{
|
||||
$cache = new ArrayAdapter(0, false, 0, 2);
|
||||
|
||||
$cache->save($cache->getItem('foo'));
|
||||
$cache->save($cache->getItem('bar'));
|
||||
$cache->save($cache->getItem('buz'));
|
||||
|
||||
$this->assertFalse($cache->hasItem('foo'));
|
||||
$this->assertTrue($cache->hasItem('bar'));
|
||||
$this->assertTrue($cache->hasItem('buz'));
|
||||
|
||||
$cache->save($cache->getItem('foo'));
|
||||
|
||||
$this->assertFalse($cache->hasItem('bar'));
|
||||
$this->assertTrue($cache->hasItem('buz'));
|
||||
$this->assertTrue($cache->hasItem('foo'));
|
||||
}
|
||||
}
|
||||
|
Reference in New Issue
Block a user