Flask - Background Tasks
Which of the following is the correct syntax to subscribe to a Redis channel in Flask using redis-py?
Which of the following is the correct syntax to subscribe to a Redis channel in Flask using redis-py?
easy📝 Syntax Q3 of 15
Step-by-Step Solution
Solution:
Step 1: Recall redis-py subscription syntax
To subscribe, create a pubsub object then call subscribe on it.Step 2: Check options
Only pubsub = redis_client.pubsub(); pubsub.subscribe('channel') correctly creates pubsub and subscribes. Others misuse methods or parameters.Final Answer:
pubsub = redis_client.pubsub(); pubsub.subscribe('channel') -> Option AQuick Check:
Subscribe uses pubsub object then subscribe method [OK]
Quick Trick: Use pubsub() then subscribe() to listen to Redis channels [OK]
Common Mistakes:
MISTAKES- Calling subscribe directly on redis_client
- Passing channel to pubsub() constructor
- Assigning subscribe() return to pubsub
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