Periodic error in error_log

Resolved

(@svs7)

Hello,
The following message is periodically present in wp-admin / error_log:

[09-Oct-2025 11:31:24 UTC] RedisException: Connection timed out in /home/tttronic/public_html/site.com/wp-content/object-cache.php:736

Stack trace: 

#0 /home/tttronic/public_html/site.com/wp-content/object-cache.php(736): Redis->connect('127.0.0.1', 6379, 1, '', 0, 1)

#1 /home/tttronic/public_html/site.com/wp-content/object-cache.php(536): WP_Object_Cache->connect_using_phpredis(Array)

#2 /home/tttronic/public_html/site.com/wp-content/object-cache.php(256): WP_Object_Cache->__construct(false)

#3 /home/tttronic/public_html/site.com/wp-includes/load.php(870): wp_cache_init()

#4 /home/tttronic/public_html/site.com/wp-settings.php(145): wp_start_object_cache()

#5 /home/tttronic/public_html/site.com/wp-admin/setup-config.php(33): require('/home/tttronic/…') 

#6 {main}

The Redis parameters in the Hosting:
Host: 127.0.0.1 and Port: 13851
are correctly set for us!

<font dir="auto" style="vertical-align: inherit;"><font dir="auto" style="vertical-align: inherit;">Същият проблем е и в другите ни идентични сайтове.</font></font>

This topic was modified 1 month, 1 week ago by svs7.
This topic was modified 1 month, 1 week ago by svs7.
This topic was modified 1 month, 1 week ago by svs7.
This topic was modified 1 month, 1 week ago by svs7.
This topic was modified 1 month, 1 week ago by svs7.

Viewing 6 replies - 1 through 6 (of 6 total)

Plugin Author Till Krüss
(@tillkruess)

1 month, 1 week ago

increase the read timeout. Check the readme for details.

Thread Starter svs7
(@svs7)

1 month ago

Ok!
How much do you recommend the “timeout” to be (currently “1”)?
(I attach a picture: https://prnt.sc/E0rjr1QfIZWf)

Am I to understand that from this (‘127.0.0.1’, 6379, 1, ”, 0, 1) I should only change the “timeout”?

And should the port 6379 remain?

In wp-config for Redis there is the following entry
define(‘WP_REDIS_PORT’, 13851);
define(‘WP_CACHE_KEY_SALT’, ‘4Dsd8lfHjysHdhf47ks8jFd5Jf’);
define(‘WP_CACHE’, true);
define(‘WP_REDIS_PERSISTENT’, true);

Plugin Author Till Krüss
(@tillkruess)

1 month ago

WP_CACHE_KEY_SALT is a deprecated constant, don’t use it.

WP_REDIS_PERSISTENT does not exist.

WP_CACHE is not related to Redis Object Cache.
Thread Starter svs7
(@svs7)

1 month ago
Okay, thank you!
We will edit the parameters.

But please tell me:
1. How much do you recommend the “timeout” to be (currently “1”)?
2. And should port 6379 remain?
Plugin Author Till Krüss
(@tillkruess)

1 month ago

Try 2.5 or 5.

Port should match what your Redis Server is configured to be.

Thread Starter svs7
(@svs7)

1 month ago

Thanks!

Viewing 6 replies - 1 through 6 (of 6 total)

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