Which configuration parameter in the redis.conf file is crucial for enabling Redis Cluster mode?
redis.conf
cluster-enabled
appendonly
cluster-config-file
cluster-node-timeout
In Redis, what does the 'N' in the 'LRU' eviction policy stand for?
Node
Newest
Next
Used
Which cloud platform offers a managed Redis service called 'ElastiCache'?
Microsoft Azure
DigitalOcean
Amazon Web Services (AWS)
Google Cloud Platform (GCP)
Which Redis command is used to add an element to a HyperLogLog?
PFADD
PFCOUNT
HGET
PFMERGE
What is the primary purpose of using a Redis Cluster?
To improve the performance of complex sorted set operations.
To enable efficient message queuing and pub/sub functionality.
To enhance data security with built-in encryption.
To distribute data and handle larger datasets than a single Redis instance can manage.
How does the WATCH command help in implementing optimistic locking in Redis?
WATCH
It prevents other clients from reading the watched keys.
It monitors the watched keys for changes by other clients.
It sets a time-to-live (TTL) on the watched keys.
It acquires an exclusive lock on the watched keys.
When dealing with a very large sorted set in Redis, what command can you use to retrieve elements within a specific rank range efficiently?
ZSCAN
ZRANGEBYSCORE
SMEMBERS
ZRANGE
Which Redis command is used to retrieve geospatial points within a specified radius?
GEOSEARCH
GEORADIUS
GEOADD
GEODIST
What is a common pattern for achieving message persistence in Redis Pub/Sub?
Configuring Redis to use a disk-based persistence mode.
Relying on the inherent message durability of Pub/Sub.
Implementing a message queue system directly within Redis.
Using Redis Streams alongside Pub/Sub.
Which of the following is NOT a typical use case for integrating Redis with a SQL database?
Caching frequently accessed data to improve read performance.
Implementing a real-time leaderboard by leveraging Redis' sorted sets.
Offloading write operations from the database to handle high traffic.
Storing large blobs of unstructured data like images or videos.