pixelfed/app/Services/GroupFeedService.php

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<?php
namespace App\Services;
use App\Models\GroupPost;
use Illuminate\Support\Facades\Redis;
class GroupFeedService
{
const CACHE_KEY = 'pf:services:groups:feed:';
const FEED_LIMIT = 400;
public static function get($gid, $start = 0, $stop = 10)
{
if ($stop > 100) {
$stop = 100;
}
return Redis::zrevrange(self::CACHE_KEY.$gid, $start, $stop);
}
public static function getRankedMaxId($gid, $start = null, $limit = 10)
{
if (! $start) {
return [];
}
return array_keys(Redis::zrevrangebyscore(self::CACHE_KEY.$gid, $start, '-inf', [
'withscores' => true,
'limit' => [1, $limit],
]));
}
public static function getRankedMinId($gid, $end = null, $limit = 10)
{
if (! $end) {
return [];
}
return array_keys(Redis::zrevrangebyscore(self::CACHE_KEY.$gid, '+inf', $end, [
'withscores' => true,
'limit' => [0, $limit],
]));
}
public static function add($gid, $val)
{
if (self::count($gid) > self::FEED_LIMIT) {
if (config('database.redis.client') === 'phpredis') {
Redis::zpopmin(self::CACHE_KEY.$gid);
}
}
return Redis::zadd(self::CACHE_KEY.$gid, $val, $val);
}
public static function rem($gid, $val)
{
return Redis::zrem(self::CACHE_KEY.$gid, $val);
}
public static function del($gid, $val)
{
return self::rem($gid, $val);
}
public static function count($gid)
{
return Redis::zcard(self::CACHE_KEY.$gid);
}
public static function warmCache($gid, $force = false, $limit = 100)
{
if (self::count($gid) == 0 || $force == true) {
Redis::del(self::CACHE_KEY.$gid);
$ids = GroupPost::whereGroupId($gid)
->orderByDesc('id')
->limit($limit)
->pluck('id');
foreach ($ids as $id) {
self::add($gid, $id);
}
return 1;
}
}
}