RedisException: MOVED 3889 / AWS MemoryDB

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Hello Till,

first of all thank you for providing this awesome plugin.

Until yesterday, it worked perfectly. We did not change any configuration, did not update plugins or anything else on the page. Today we’ve got this error and a broken WordPress instance:

NOTICE: PHP message: RedisException: MOVED 3889 xxx-0001-002.xxx.xxx.memorydb.sa-east-1.amazonaws.com:6379 in /usr/src/wordpress/wp-content/object-cache.php:1922

We configured WP_REDIS_HOST with clustercfg.xxx.xxx.memorydb.sa-east-1.amazonaws.com. As far as I’m understanding predis as well as phpredis, both are able to resolve clusters without providing a dedicated cluster configuration.

Obviously xxx-0001-002. is resolved via clustercfg.

Now we’re not able to get the page up and running with object cache enabled.

Redis is running as AWS MemoryDB with multiple nodes and shards. As said – worked until today.

I’m not sure how to continue here. Any ideas?

Thank you in advance and best regards,
Sascha

 

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