Bernard Traquena

@tillkruess https://github.com/tillkruss/redis-cache/pull/135/files

This line is causing issue when your redis is in master/slave replication mode. Command INFO is not allowed in replication mode.

$server_info = $this->redis->info( 'SERVER' );

Temporary fix.

@@ -572,11 +572,14 @@ class WP_Object_Cache
                 $this->redis->ping();
             }

-            $server_info = $this->redis->info( 'SERVER' );
-            if (isset($server_info['redis_version'])) {
-                $this->redis_version = $server_info['redis_version'];
-            } elseif (isset( $server_info['Server']['redis_version'])) {
-                $this->redis_version = $server_info['Server']['redis_version'];
+            // If not in replication mode.
+            if ( ! $options['replication'] ) {
+                $server_info = $this->redis->info( 'SERVER' );
+                if (isset($server_info['redis_version'])) {
+                    $this->redis_version = $server_info['redis_version'];
+                } elseif (isset( $server_info['Server']['redis_version'])) {
+                    $this->redis_version = $server_info['Server']['redis_version'];
+                }
             }

• This reply was modified 5 years ago by Bernard Traquena.