Has anyone connected multiple XenForo instances to a single Redis 7 server?

robdog

robdog

Well-known member
I want to look at the possibility of connecting multiple XenForo instances to a single Redis 7 server. I was able to use namespaces in a previous version of Redis, but not anymore in version 7. Has anyone tried prefixing a key with a value to ID the stored values per instance?
 
Kirby said:
Hmm ... this is effectively what namespace does, eg. key it prefixes the keys.

What specific problems did you notice?
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Is namespace still supported in Redis 7? The test that I have ran with multiple XenForo instances hitting the same Redis 7 server seems to have an issue with keys getting overwritten and then causing a latency issue. I am going to keep checking and see if there is something else going wrong here.
 
I don't use Redis much, but as far as I can see from the code namespacing is internal to Doctrine Cache so it shouldn't matter which cache provider is used.

Did you configure a distinct namespace for each XenForo instance in config.php?
 
robdog said:
I want to look at the possibility of connecting multiple XenForo instances to a single Redis 7 server. I was able to use namespaces in a previous version of Redis, but not anymore in version 7. Has anyone tried prefixing a key with a value to ID the stored values per instance?
Click to expand...
Can't you use different Redis database for each instance? If not you can run a separate Redis server instance on a different port for each Xenforo instance too. I do the latter already.
 
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eva2000 said:
Can't you use different Redis database for each instance? If not you can run a separate Redis server instance on a different port for each Xenforo instance too. I do the latter already.
Click to expand...

Are you talking about the 'database' config value under the cache config in the main config.php file?
 
Kirby said:
I don't use Redis much, but as far as I can see from the code namespacing is internal to Doctrine Cache so it shouldn't matter which cache provider is used.

Did you configure a distinct namespace for each XenForo instance in config.php?
Click to expand...

Yeah, each instance has a different namespace.
 
eva2000 said:
Can't you use different Redis database for each instance? If not you can run a separate Redis server instance on a different port for each Xenforo instance too. I do the latter already.
Click to expand...

Yes - I run 6 XF forums on one server all sharing the same Redis server.

They each have their own Redis database, which is configured via the XF config

PHP: 
$config['cache']['enabled'] = true;
$config['cache']['provider'] = 'Redis';
$config['cache']['config'] = [
    'host' => '127.0.0.1',
    'database' => 7, // <=== change database number for each forum
];
 
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