symfony · nicolas-grekas · Sep 27, 2020 · Aug 30, 2020
diff --git a/src/Symfony/Component/Cache/Adapter/RedisTagAwareAdapter.php b/src/Symfony/Component/Cache/Adapter/RedisTagAwareAdapter.php
@@ -149,7 +149,11 @@ protected function doDeleteYieldTags(array $ids): iterable
     {
         $lua = <<<'EOLUA'
             local v = redis.call('GET', KEYS[1])
-            redis.call('DEL', KEYS[1])
+            local e = redis.pcall('UNLINK', KEYS[1])
+
+            if type(e) ~= 'number' then
+                redis.call('DEL', KEYS[1])
+            end
 
             if not v or v:len() <= 13 or v:byte(1) ~= 0x9D or v:byte(6) ~= 0 or v:byte(10) ~= 0x5F then
                 return ''

diff --git a/src/Symfony/Component/Cache/Traits/RedisTrait.php b/src/Symfony/Component/Cache/Traits/RedisTrait.php
@@ -11,6 +11,7 @@
 
 namespace Symfony\Component\Cache\Traits;
 
+use Predis\Command\Redis\UNLINK;
 use Predis\Connection\Aggregate\ClusterInterface;
 use Predis\Connection\Aggregate\RedisCluster;
 use Predis\Response\Status;
@@ -363,7 +364,8 @@ protected function doClear(string $namespace)
                 // As documented in Redis documentation (http://redis.io/commands/keys) using KEYS
                 // can hang your server when it is executed against large databases (millions of items).
                 // Whenever you hit this scale, you should really consider upgrading to Redis 2.8 or above.
-                $cleared = $host->eval("local keys=redis.call('KEYS',ARGV[1]..'*') for i=1,#keys,5000 do redis.call('DEL',unpack(keys,i,math.min(i+4999,#keys))) end return 1", $evalArgs[0], $evalArgs[1]) && $cleared;
+                $unlink = version_compare($info['redis_version'], '4.0', '>=') ? 'UNLINK' : 'DEL';
+                $cleared = $host->eval("local keys=redis.call('KEYS',ARGV[1]..'*') for i=1,#keys,5000 do redis.call('$unlink',unpack(keys,i,math.min(i+4999,#keys))) end return 1", $evalArgs[0], $evalArgs[1]) && $cleared;
                 continue;
             }
 
@@ -393,12 +395,27 @@ protected function doDelete(array $ids)
         }
 
         if ($this->redis instanceof \Predis\ClientInterface && $this->redis->getConnection() instanceof ClusterInterface) {
-            $this->pipeline(function () use ($ids) {
+            static $del;
+            $del = $del ?? (class_exists(UNLINK::class) ? 'unlink' : 'del');
+
+            $this->pipeline(function () use ($ids, $del) {
                 foreach ($ids as $id) {
-                    yield 'del' => [$id];
+                    yield $del => [$id];
                 }
             })->rewind();
         } else {
+            static $unlink = true;
+
+            if ($unlink) {
+                try {
+                    $this->redis->unlink($ids);
+
+                    return true;
+                } catch (\Throwable $e) {
+                    $unlink = false;
+                }
+            }
+
             $this->redis->del($ids);
         }
 

diff --git a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/RedisSessionHandler.php b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/RedisSessionHandler.php
@@ -89,6 +89,18 @@ protected function doWrite(string $sessionId, string $data): bool
      */
     protected function doDestroy(string $sessionId): bool
     {
+        static $unlink = true;
+
+        if ($unlink) {
+            try {
+                $this->redis->unlink($this->prefix.$sessionId);
+
+                return true;
+            } catch (\Throwable $e) {
+                $unlink = false;
+            }
+        }
+
         $this->redis->del($this->prefix.$sessionId);
 
         return true;

diff --git a/src/Symfony/Component/Messenger/Bridge/Redis/Transport/Connection.php b/src/Symfony/Component/Messenger/Bridge/Redis/Transport/Connection.php
@@ -460,6 +460,19 @@ private function getCurrentTimeInMilliseconds(): int
 
     public function cleanup(): void
     {
+        static $unlink = true;
+
+        if ($unlink) {
+            try {
+                $this->connection->unlink($this->stream);
+                $this->connection->unlink($this->queue);
+
+                return;
+            } catch (\Throwable $e) {
+                $unlink = false;
+            }
+        }
+
         $this->connection->del($this->stream);
         $this->connection->del($this->queue);
     }