Support Redis cache [RELEASED]: Page 2 - Enhance Control Panel

Support Redis cache [RELEASED]

digitalexpanse

We also use Redis on socket and we're killing it. Never heard of KeyDB or Relay and fine with either provided they play nice with LScache which currently supports Mem/Red.

KeyDB - drop in redis replacement?
Relay - drop in redis replacement?

Ned

[unknown]

Yes, I agree paid option is not great but for my needs, it's quite good, I do plan on having a look at KeyDB also!

The main thing to keep in mind KeyDB and Relay are both drop-in replacements, I am trying to show that there are lots of options that people like so that when the Enhance team does look at Redis they can see that drop-in replacements are something people plan to use so they can support them, write some documentation or even give us an easy way to pick between the three.

[unknown]

Yes, Both are drop-in but with enhance it may be a bit tricker as they are using everything in docker containers, so bringing these up for consideration to the devs is important so they know what the community is using/want.

Redis & LSCache is great, My current setup on DirectAdmin - I use relay on more niche sites which warrant it.

AdamM

@Adam Is it possible to add redis/keydb to roadmap? This topic is the most popular on the forum. Many customers expect this. This will increase efficiency and minimize infrastructure costs.

John-P

Agree with all of the above, no real preference between Redis and KeyDB, but having one of them integrated would be a huge plus.

Adrien

This is a great news. Customers Having Redis running within their php container and not being shared.
I support this feature and prefer that it is being well implemented then rushed.
So I'll be waiting patiently.

AdamM

After update Appcd 1.1.0 redis-php is available.
question now how to run e.g. docker redis image or keydb to be able to connect to wordpress sites and litespeed cache plugin?
Does anyone know how to do this correctly?

ss88us

AdamM Now that redis is available via the PHP module the LiteSpeed cache plugin will work but you still need to install redis on the server.

apt install redis will work and this should work for docker. I will be trying docker later and can let you know.

Darren

The redis-php module enables PHP to talk to a redis instance. There's no reason why you couldn't run a docker container of redis on the same server (e.g. docker run --name my-redis -p 6379:6379 -d redis) - however at the moment Enhance provides no management or monitoring of that instance, so you'd want to make sure it was monitored and you're comfortable managing the container/redis config files. So right now it's possible if you know what you're doing, but it's 'at risk'. It also won't be isolated in any way from other sites on the same server, so possibly not great on a shared system.

In the future as Adam has mentioned we are looking to provide a way to offer redis within each appcd container on a per site/per package basis which will isolate the redis from other users as well as monitor and restart if any issues etc.

kyzoeadmin

I'll wait Patiently for the enhance update that makes it possible, no enigneering ourselfs.

AdamM

Thanks to the help of @Adam I was able to get KeyDB docker image up and running

Create an image e.g. KeyDB, run example:

docker run -d --restart unless-stopped eqalpha/keydb keydb-server /etc/keydb/keydb.conf --server-threads 4 --databases 101

Then you need to find the KeyDB IP to establish a connection.
View the KeyDB docker image

docker ps | grep keydb

At eqalpha/keydb find the image ID, this is the first number from the left.
Now display the KeyDB image data
Example:

docker inspect 521er1312sr12

Find variable IPAddress
My variable looks as follows

"IPAddress": "172.17.0.2",

Now test the connection in WordPress and LiteSpeed Cache Plugin

Object Cache: On
Method: Redis
Host: 172.17.0.2
Port: 6379

If status:
Redis Extension: Enabled
Connection Test: Passed

KeyDB is working properly.

mike

AdamM @ss88us make sure each WordPress instance connects to a different REDIS/KeyDB database or unique cache key salt. If all WordPress instances connect to the same DB weird shit happens. .

ss88us

If someone wants Redis:

Install Redis
docker run --restart unless-stopped --network=enhance-network --ip=199.99.88.199 --name redis-websites -d redis redis-server --save 60 1 --loglevel warning

Results:
IP = 199.99.88.199
Port: 6379

You can use LiteSpeed, a custom solution or any WordPress Redis plugin.

mendozal

ss88us and that ip address would be the address of the server?

ss88us

mendozal That sure is. This way it does not change on reboot -- it will always be 199.99.88.199 (or you can set your own).

Darren

By specifying --ip in the docker run command it's bringing up the docker container with that specific IP address, otherwise I think it would get issued a sequential IP of what's available from docker's internal network. It's good to go for a high number so that it doesn't overlap with any existing containers.

ss88us

Darren Hi Darren. What would be the highest which wouldn't see conflict? I ask because on reboot, the IP of Redis always changes unless an IP is set.

Darren

Enhance creates about 20 docker containers for various services, so anything past .21 should be OK, but it's a big "should"! I would suggest .199-255 is safe enough.

ss88us

Darren Understood - thank you! 255 might be better then, ha!

ss88us

@AdamM check out Dragonfly -- faster than KeyDB apparently!

https://github.com/dragonflydb/dragonfly

AdamM

ss88us Any idea how to run properly with Enhance?

ss88us

AdamM Sure, i think! I did this:

docker run --restart unless-stopped --network=enhance-network --ip=199.99.88.255 --name dragonfly --ulimit memlock=-1 -d docker.dragonflydb.io/dragonflydb/dragonfly

Doing it this way means it will work alongside your current KeyDB install, so then you can test both! The IP address of Dragonfly will be 199.99.88.255 and it will work with the same port 6379. Apparently for Dragonfly, both Redis and Memcached plugins will work on Dragonfly! 😃 I've only tested Redis plugins and it works.

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