Redis sessions, cache & queues

rafaucau

luceos
Still not working
php_network_getaddresses: getaddrinfo failed: Name or service not known [tcp:///home/klient.dhosting.pl/androiddev/.redis/redis.sock:6379]

rafaucau

luceos I found the cause of the problem. It is a conflict with fof/terms. When I disable fof/terms, there is no error.

But the error comes back when I try to enable RedisQueue:

        new Blomstra\Redis\Extend\EnableRedisQueue([
            'host' => '/home/klient.dhosting.pl/androiddev/.redis/redis.sock',
            'database' => 0,
        ]),

rafaucau

luceos
When I clear the cache, I see that it doesn't work though.

php flarum cache:clear
Clearing the cache...

In AbstractConnection.php line 155:
                                                                               
  php_network_getaddresses: getaddrinfo failed: Name or service not known [tc  
  p:///home/klient.dhosting.pl/androiddev/.redis/redis.sock:6379]

This happens even when I disable the Redis extension. When I comment out new Blomstra\Redis\Extend\EnableRedisCache([...]), then the problem disappears.

BTW, sorry for the spam here. Can you please move my posts here?

luceos

rafaucau the linked discussion is about Blomstra managed Flarum hosting. Why would your posts be moved there? You mean https://discuss.flarum.org/d/21873-redis-cache-queues ?

rafaucau

You mean https://discuss.flarum.org/d/21873-redis-cache-queues ?

Ahh... Yes 😆
I corrected the link.

luceos

As to the issue, I will need to look into this. The extension needs to be patched for Flarum v1 anyhow so that makes for a great opportunity to get that done 😉

Hari

if i am using flarum that means i am already running larval ?

and can i enable redis only for flarum ? (installed in sub folder)

luceos

Hari Flarum is based on components in use by Laravel. Laravel itself is the full collection of those components (called Illuminate). Flarum uses some of them but can be extended to use even more of those components (like queues, cache etc).

Hari

luceos and can i enable redis only for flarum ? (installed in sub folder)

is cloudflare cache better than flarum redis cache ?

i am assuming redis cache extension is something like W3 total cache am i right ?

Hari

i will try to learn from google 🙂

have pleasant week ahead !

luceos

Hari the redis cache replaces the default Flarum file based cache where possible. In practice this will speed up your forum but only if your forum is running on multiple web nodes or your filesystem is slow. For smaller communities there's no need to switch to redis caching.

Now redis queues is a different thing entirely. The default queue driver is sync, which means all jobs that could be processed in the background are processed inside the same request where changes happen. For example if you post in a discussion to which 100 users want to get notifications, all these notifications are sent out while posting. This stalls the user as they have to wait for that request to finish to see changes. To circumvent this one can set up a queue driver like the redis one. If a user now posts all notifications are sent in a so called queue worker which uses the redis database to pull in new jobs and process them. Even with one queue worker the gains to the user are immense.

Hari

luceos thanks a lot for the detailed explanation. understood . 👍👍👍

if possible please add these lines as "about" in first post of this discussion

luceos

0.4.0-beta

I just tagged 0.4.0-beta, please I urge you if you use this package please read this full post and the OP after that.

The changes

compatibility with Flarum v1.0.0 stable
this is no longer an extension:
- no counter in the admin area
- it will no longer show up on extiverse
- it cannot be enabled from the admin (it never had effect anyhow)
you have to configure (like before) using a local extender (these have changed!)

Database division

The rewrite to slim down the extenders was done to offer an easier way to re-use configurations while still allowing different databases. So why only different databases? Simple, previously with cache and queue set to run both using redis, once you executed a cache clear command the queue jobs would be removed cleared as well. Now that we also introduced sessions on redis the need to separate these databases was even more urgent. I recommend you to always separate databases! At least separate sessions and queue from cache!

Why remove the queue count?

@IanM and I talked about a PR related to adding the ability to toggle the services one-by-one from the admin area. Initially agreed it made sense to do so, but we eventually agreed that this package is not for admins but for webmasters (or devops or whoever installs and maintains the forum). Allowing an admin to impact the stack of the community from the admin area would be detrimental. So we decided to remove all UX and agreed that this would be better suited as an external UX only extension.

The extender

Make sure to refactor your forum to remove the Cache and Queue extenders. There's now only one extender, check the OP for more information luceos .

rafaucau

luceos The last update also fixes the Unix Socket problem?

luceos

rafaucau no, I haven't look at that yet. Getting things ready for stable has been my first priority.

tuxmain

I've just upgraded to 1.0.0 and flarum-redis:0.4.0-beta. When flarum-redis is enabled in extend.php, there is an error:

PHP message: PHP Parse error:  syntax error, unexpected 'Configuration' (T_STRING), expecting function (T_FUNCTION) or const (T_CONST) in /var/www/flarum_pa/vendor/blomstra/flarum-redis/src/Extend/Redis.php on line 15

(with PHP 7.3.27-1~deb10u1 (fpm-fcgi))

luceos

tuxmain that looks like a php 7.4 feature. Let me patch it. Try 0.4.0-beta.2

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