pixelfed/app/Services/HashtagFollowService.php

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<?php
namespace App\Services;
use Illuminate\Support\Facades\Cache;
use Illuminate\Support\Facades\Redis;
use App\Hashtag;
use App\StatusHashtag;
use App\HashtagFollow;
class HashtagFollowService
{
const FOLLOW_KEY = 'pf:services:hashtag-follows:v1:';
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const CACHE_KEY = 'pf:services:hfs:byHid:';
const CACHE_WARMED = 'pf:services:hfs:wc:byHid';
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public static function getPidByHid($hid)
{
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if(!self::isWarm($hid)) {
return self::warmCache($hid);
}
return self::get($hid);
}
public static function unfollow($hid, $pid)
{
return Redis::zrem(self::CACHE_KEY . $hid, $pid);
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}
public static function add($hid, $pid)
{
return Redis::zadd(self::CACHE_KEY . $hid, $pid, $pid);
}
public static function rem($hid, $pid)
{
return Redis::zrem(self::CACHE_KEY . $hid, $pid);
}
public static function get($hid)
{
return Redis::zrange(self::CACHE_KEY . $hid, 0, -1);
}
public static function count($hid)
{
return Redis::zcard(self::CACHE_KEY . $hid);
}
public static function warmCache($hid)
{
foreach(HashtagFollow::whereHashtagId($hid)->lazyById(20, 'id') as $h) {
if($h) {
self::add($h->hashtag_id, $h->profile_id);
}
}
self::setWarm($hid);
return self::get($hid);
}
public static function isWarm($hid)
{
return Redis::zcount(self::CACHE_KEY . $hid, 0, -1) ?? Redis::zscore(self::CACHE_WARMED, $hid) != null;
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}
public static function setWarm($hid)
{
return Redis::zadd(self::CACHE_WARMED, $hid, $hid);
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}
}