Redis sessions, cache & queues

luceos

matteocontrini queue has a queue and connection value; it stems from the laravel source that flarum uses. Their stub doesn't even have it nullable. As we only have one connection I bet it is caused by the Flarum implementation somewhere 😎

luceos

0.3.0-beta for flarum beta 16 released, update:

composer require blomstra/flarum-redis -W

or if you have your dependency set to * just use

composer update blomstra/flarum-redis -W

This is a beta because it hasn't been tested in production yet.

MohdKhan

luceos give HTTP ERROR 500.
after adding code to extend.php

MohdKhan

its Works after adding :0.3.0-beta with composer require code.

fatihaysel

how can we set up Redis on 1 server 2 domain

[deleted]

fatihaysel Yes, but you need to be sure you use different databases for each instance you want to run. Redis supports up to 15, with the default being 1, so your next one would be 2, etc..

matteocontrini

[deleted] just to nitpick... The maximum number of databases can be changed in the Redis configuration and there's no hard limit except memory, I think 🙂

[deleted]

matteocontrini agreed, but the default out of the box after install is 15.

fatihaysel

Thank you [deleted] matteocontrini

i change database to 2 but I got,

 php_network_getaddresses: getaddrinfo failed: Name does not resolve [tcp://127.0.0.1/forum/
  :6379]

error

fatihaysel

Thank you for your informations rob006 matteocontrini [deleted] for your contribution to learning new things. 😃
how can I solve READONLY You can't write against a read only replica error
i am using mondedie/flarum beta 15. I install setup redis. After run this code php flarum queue:work it is working. But, after a certain period of time(2 hour) it is not working. What should I do for it to work continuously? Do you have any advice?

rob006

[deleted] Actually it is 16 databases by default. And default one is 0, not 1 (at least from Redis perspective - config example from first post explicitly uses 1 as database, so default Redis database does not matter in this case).

fatihaysel

i delete /forum/ now its looks like working

fatihaysel

redis is working with code php flarum queue:work but after a while Redis not working. Is there any other solution instead of running this code each time?

matteocontrini

fatihaysel you don't need to run it "each time", you should create for example a system service as mentioned a few posts above

Geraldlzc

matteocontrini WorkingDirectory、ExecStart, I don't know how to configure these two parameters. Can you tell me.

fatihaysel

This post Right?

On distributions with systemd (e.g. Ubuntu), it's also possible to create a system service without installing anything. Here's an example:

/etc/systemd/system/flarum-queue.service


[Unit]
Description=flarum-queue
After=network.target
StartLimitIntervalSec=0

[Service]
Type=simple
User=deploy
WorkingDirectory=/var/www/flarum
ExecStart=/usr/bin/php flarum queue:work
Restart=always
RestartSec=5

[Install]
WantedBy=multi-user.target
Then, once:

sudo systemctl start flarum-queue
sudo systemctl enable flarum-queue

matteocontrini

fatihaysel yes, although it's not the only way. That's what I did with no issues so far

fatihaysel

Thank you @matteocontrini

fatihaysel

I got these error using redis.How can I solve it


Predis\Response\ServerException: ERR Error running script (call to f_4e92c9c2943985bb6b3ac9a3ecfdd7e9255d4b92): @user_script:2: @user_script: 2: -MISCONF Redis is configured to save RDB snapshots, but it is currently not able to persist on disk. Commands that may modify the data set are disabled, because this instance is configured to report errors during writes if RDB snapshotting fails (stop-writes-on-bgsave-error option). Please check the Redis logs for details about the RDB error.    in /flarum/app/vendor/predis/predis/src/Client.php:370
Stack trace:
#0 /flarum/app/vendor/predis/predis/src/Client.php(335): Predis\Client->onErrorResponse()
#1 /flarum/app/vendor/predis/predis/src/Client.php(314): Predis\Client->executeCommand()
#2 /flarum/app/vendor/illuminate/redis/Connections/Connection.php(116): Predis\Client->__call()
#3 /flarum/app/vendor/illuminate/redis/Connections/Connection.php(220): Illuminate\Redis\Connections\Connection->command()
#4 /flarum/app/vendor/illuminate/queue/RedisQueue.php(105): Illuminate\Redis\Connections\Connection->__call()
#5 /flarum/app/vendor/illuminate/queue/RedisQueue.php(91): Illuminate\Queue\RedisQueue->pushRaw()
#6 /flarum/app/vendor/flarum/subscriptions/src/Listener/SendNotificationWhenReplyIsPosted.php(31): Illuminate\Queue\RedisQueue->push()
#7 /flarum/app/vendor/illuminate/events/Dispatcher.php(389):

clarkwinkelmann

fatihaysel that seems related to the fact that the container you are using is (at least in part) read only.

There might be tutorials for how to configure redis in docker with writable disks for those features.

fatihaysel

after set up cronjob there will be a lot of same processes. So memory The ram usage rate has increased too much and the server has been shut down.
my cronjob run php flarum queue:work every minute. when I didn't use cronjob process will be end after a while.
What should I do use queue correctly?

luceos

fatihaysel queue:work has to be daemonised, so you need to keep that process running. The recommendation is to use supervisord or something similar, see: https://laravel.com/docs/8.x/queues#queue-workers-and-deployment

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