Continuous error: Read error on connection and logged out backend (after upgrade)

[seansan]

Since upgrade (some days ago) we see many logging

\ Next exception 'CredisException' with message 'read error on connection'

\ and users complaining about being logged out in backend

Logging below

Next exception 'CredisException' with message 'read error on connection' in /home/shirts350/domains/webstore.com/public_html/.modman/Cm_RedisSession/lib/Credis/Client.php:919 Stack trace:

0 /home/shirts350/domains/webstore.com/public_html/.modman/Cm_RedisSession/lib/Credis/Client.php(586): Credis_Client->__call('select', Array)

1 /home/shirts350/domains/webstore.com/public_html/.modman/Cm_RedisSession/code/Model/Session.php(415): Credis_Client->select(2)

2 [internal function]: Cm_RedisSession_Model_Session->write('ec31cf667c0b8f1...', '')

3 /home/shirts350/domains/webstore.com/public_html/app/code/core/Mage/Core/Model/Resource/Session.php(97): session_write_close()

4 [internal function]: Mage_Core_Model_Resource_Session->__destruct()

5 {main}

2015-01-14T11:05:51+00:00 ERR (3): exception 'RedisException' with message 'read error on connection' in /home/shirts350/domains/webstore.com/public_html/.modman/Cm_RedisSession/lib/Credis/Client.php:901 Stack trace:

0 [internal function]: Redis->select(2)

1 /home/shirts350/domains/webstore.com/public_html/.modman/Cm_RedisSession/lib/Credis/Client.php(901): call_user_func_array(Array, Array)

2 /home/shirts350/domains/webstore.com/public_html/.modman/Cm_RedisSession/lib/Credis/Client.php(586): Credis_Client->__call('select', Array)

3 /home/shirts350/domains/webstore.com/public_html/.modman/Cm_RedisSession/code/Model/Session.php(415): Credis_Client->select(2)

4 [internal function]: Cm_RedisSession_Model_Session->write('3c0ca6f2d3d4c56...', '')

5 /home/shirts350/domains/webstore.com/public_html/app/code/core/Mage/Core/Model/Resource/Session.php(97): session_write_close()

6 [internal function]: Mage_Core_Model_Resource_Session->__destruct()

7 {main}

[colinmollenhour]

This is the cache backend repo but your error appears to be in the session handler. Please make sure you are using the latest and report on the correct project.

[seansan]

Hi Collin, thanks. Yes I posted it again. Sorry.

About Cm_Cache_Backend_Redis, what does it do exactly?

• does is make the send_cache that you can enable in Magento use Redis as a storage?
• and if YES: what does it replace? Do I disable Lesti_FPC? We now use Cache, FPC and Session in Redis .....

Hint: maybe you could add something about this in the readme. Was not clear to me.

Hope it helps

On Fri, Jan 23, 2015 at 9:14 PM, Colin Mollenhour notifications@github.com wrote:

Closed #84 https://github.com/colinmollenhour/Cm_Cache_Backend_Redis/issues/84.

— Reply to this email directly or view it on GitHub https://github.com/colinmollenhour/Cm_Cache_Backend_Redis/issues/84#event-223939200 .