IndexError: list index out of range while applying filter on semantic cache check

[MeharRamzan]

I am facing this issue while trying to applying filter on semantic cache check

[tylerhutcherson]

For some reason, the result coming back from the cache check step is empty. We need steps to be able to reproduce the entire flow.

Can you clear the db and then re-initialize your SemanticCache and then use the private_cache.store(...) command to populate the entry in the cache?

[MeharRamzan]

hey @tylerhutcherson, I emptied the Redis database and tried running the code again. The data is successfully stored in Redis, but there's an issue during retrieval.

[tylerhutcherson]

We're taking a closer look, thanks!

[justin-cechmanek]

Hi. Can you share with us your redis version, redisvl version, client versions, python version?
I see your code snippets also have some lines above not shown. Is there anything there that may be influence caching?

[MeharRamzan]

@justin-cechmanek

redis==5.0.8
redisvl==0.3.0
python==3.10.14

here is the complete code.

[justin-cechmanek]

We're having trouble reproducing your error. Can you confirm your 'redis_url' matches what is shown if you print private_cache._index.client, specifically the host and port names? My suspicion currently is that your dotenv setup is different than mine.

[tylerhutcherson]

We're having trouble reproducing your error. Can you confirm your 'redis_url' matches what is shown if you print private_cache._index.client, specifically the host and port names? My suspicion currently is that your dotenv setup is different than mine.

also please validate which distribution of redis you are using?
https://redis.io/docs/latest/operate/oss_and_stack/install/install-stack/docker/

[MeharRamzan]

@justin-cechmanek here is the output of print(private_cache._index.client)

<redis.client.Redis(<redis.connection.ConnectionPool(<redis.connection.Connection(host=redis-14645.c275.us-east-1-4.ec2.redns.redis-cloud.com,port=14645,db=0)>)>)>

[MeharRamzan]

@tylerhutcherson I'm new to Redis and still getting familiar with its features. I've recently read the documentation here, signed up for Redis Cloud, created a database and Redis URL, and installed RedisInsight to monitor and manage my setup.

Everything is working well for semantic search, but I'm encountering an issue when applying specific filters. I’m running this on an Ubuntu .

[justin-cechmanek]

Are you only seeing errors when working with specific filters, or do all cache checks fail to return results?

[MeharRamzan]

@justin-cechmanek When I use the filters, I get an error, but without the filter, it works perfectly fine. You can see in the picture that I commented out the filter_expression, and it starts working.

[tylerhutcherson]

@MeharRamzan My theory is that there is an index with the name private_cache that is old. Because you see:

11:54:53 redisvl.index.index INFO   Index already exists, not overwriting.

^^ That means the index is already configured in Redis (potentially, at some point without the filter field). And thus, it's not overwriting it since it's trying to use the same name private_cache.

To confirm, try either:

• Run the same example using a different name arg to the SemanticCache.
• Drop the existing index using private_cache.delete() OR by running flushall on your dev database (you can do this in the console in RedisInsight).

If confirmed, we will work to make this handled better in a patch release along with better documentation.

[MeharRamzan]

@tylerhutcherson I tried it again with a new database. I deleted the old one and then tried, and now it is working.