Connecting to a Redis instance that isn't hosted locally

[Atomist]

Hi guys,

Love your work, getting really nice results when working locally but struggling to push this into the cloud. Even hosting the app locally I cannot get the RedisStore to redirect to a seperate URL. There is no documentation for this and I have attempted several different ways. The main problem I think being that you must initialise the app with the transforms=[ServersideOutputTransform(backend=RedisStore())] before any config variables can be set on flask_caching's Cache(). Therefore I cannot configure the Cache() before feeding it into RedisStore().

Error is always Error 61 connecting to localhost:6379. Connection refused. - because I am not hosting the Redis server locally.

Any help is greatly appreciated.

[Emil Haldrup Eriksen]

Thanks! You can pass keyword arguments to the underlying RedisCache object via the RedisStore constructor. See the details here,

https://github.com/pallets-eco/flask-caching/blob/6bb58967091f6d6b337933c0c7f72ac063ccd452/src/flask_caching/backends/rediscache.py#L40

[Atomist]

Thanks for the quick response, although I'm still missing something obviously.

Loading app as so:
from flask_caching.backends import RedisCache
from dash_extensions.enrich import DashProxy, ServersideOutputTransform, RedisStore

app = DashProxy( __name__, transforms=[ServersideOutputTransform(backend=RedisStore(RedisCache(host='url.com', port=25061, password='password')))])

Arguments don't seem to be picked up by RedisCache object at all.

[Emil Haldrup Eriksen]

Ah, so what I meant was passing the arguments directly, so something like this,

rs = RedisStore(host='url.com', port=25061, password='password')
app = DashProxy( __name__, transforms=[ServersideOutputTransform(backend=rs)])

[Atomist]

I see, thanks! Sorry the confusion on my part.

FYI, for any others, I am using a TLS secured managed Redis service. As such I have also had to add the following arguments:

RedisStore(ssl=True, ssl_cert_reqs="none")