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[CACHE] Fix bug in list caching

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Hugo Sales 2020-08-28 20:14:31 +00:00 committed by Hugo Sales
parent 496dec4254
commit 459f0bf41f
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GPG Key ID: 7D0C7EAFC9D835A0
2 changed files with 34 additions and 36 deletions
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36
src/Controller/NetworkPublic.php → src/Controller/Network.php
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@ -34,45 +34,23 @@ use App\Core\Controller;
use App\Core\DB\DB;
use Symfony\Component\HttpFoundation\Request;
class NetworkPublic extends Controller
class Network extends Controller
{
public function public(Request $request)
{
$notes = DB::findBy('note', [], ['created' => 'DESC']);
$attachments = [];
foreach ($notes as $n) {
$a = DB::dql(
'select f from App\Entity\File f ' .
'join App\Entity\FileToNote ftn with ftn.file_id = f.id ' .
'where ftn.note_id = :note_id',
['note_id' => $n->getId()]
);
$attachments[] = $a;
}
return [
'_template' => 'network/public.html.twig',
'notes' => $notes,
'attachments' => array_reverse($attachments),
'_template' => 'network/public.html.twig',
'notes' => DB::dql('select n from App\Entity\Note n ' .
'where n.reply_to is null order by n.created DESC'),
];
}
public function home(Request $request)
{
$notes = DB::findBy('note', [], ['created' => 'DESC']);
$attachments = [];
foreach ($notes as $n) {
$a = DB::dql(
'select f from App\Entity\File f ' .
'join App\Entity\FileToNote ftn with ftn.file_id = f.id ' .
'where ftn.note_id = :note_id',
['note_id' => $n->getId()]
);
$attachments[] = $a;
}
$notes = DB::findBy('note', [], ['created' => 'DESC']);
return [
'_template' => 'network/public.html.twig',
'notes' => $notes,
'attachments' => array_reverse($attachments),
'_template' => 'network/public.html.twig',
'notes' => $notes,
];
}
}

34
src/Core/Cache.php
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@ -1,7 +1,6 @@
<?php
// {{{ License
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
@ -16,7 +15,6 @@
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
// }}}
namespace App\Core;
@ -24,6 +22,7 @@ namespace App\Core;
use Functional as F;
use Redis;
use RedisCluster;
use SplFixedArray;
use Symfony\Component\Cache\Adapter;
use Symfony\Component\Cache\Adapter\ChainAdapter;
@ -81,8 +80,8 @@ abstract class Cache
$r->setOption($class::OPT_TCP_KEEPALIVE, true);
// Use LZ4 for the improved decompression speed (while keeping an okay compression ratio)
$r->setOption($class::OPT_COMPRESSION, $class::COMPRESSION_LZ4);
self::$redis[$pool][] = $r;
$adapters[$pool][] = new Adapter\RedisAdapter($r);
self::$redis[$pool] = $r;
$adapters[$pool][] = new Adapter\RedisAdapter($r);
break;
case 'memcached':
// memcached can also have multiple servers
@ -131,17 +130,38 @@ abstract class Cache
return self::$pools[$pool]->delete($key);
}
public static function getList(string $key, callable $calculate, string $pool = 'default', int $max_count = 64, float $beta = 1.0): SplFixedArray
public static function getList(string $key, callable $calculate, string $pool = 'default', int $max_count = -1, float $beta = 1.0): array
{
if (isset(self::$redis[$pool])) {
return SplFixedArray::fromArray(self::$redis[$pool]->lRange($key, 0, -1));
if (!($recompute = $beta === INF || !(self::$redis[$pool]->exists($key)))) {
if (!($_ENV['REDIS_CACHE_USE_EXPONENTIAL_UPDATE'] ?? false)) {
$recompute = (mt_rand() / mt_getrandmax() > ((float) ($_ENV['REDIS_CACHE_RANDOM_UPDATE'] ?? 0.95)));
Log::info('Item "{key}" elected for early recomputation', ['key' => $key]);
} else {
if ($recompute = ($idletime = self::$redis[$pool]->object('idletime', $key) ?? false) && ($expiry = self::$redis[$pool]->ttl($key) ?? false) && $expiry <= $idletime / 1000 * $beta * log(random_int(1, PHP_INT_MAX) / PHP_INT_MAX)) {
Log::info('Item "{key}" elected for early recomputation {delta}s before its expiration', [
'key' => $key,
'delta' => sprintf('%.1f', $expiry - microtime(true)),
]);
}
}
}
if ($recompute) {
$save = true;
$res = $calculate(null, $save);
if ($save) {
self::$redis[$pool]->del($key);
self::$redis[$pool]->lPush($key, ...$res);
}
}
return self::$redis[$pool]->lRange($key, 0, $max_count);
} else {
$keys = self::getKeyList($key, $max_count, $beta);
$list = new SplFixedArray($keys->count());
foreach ($keys as $k) {
$list[] = self::get($k, $calculate, $pool, $beta);
}
return $list;
return $list->toArray();
}
}