To query Redis, you can use various Redis commands based on the data type you're working with. Here are some common data types in Redis and their respective querying commands:
Use the GET
command to retrieve the value of a key.
GET key_name
Use HGET
to get the value associated with a specific field in a hash.
HGET hash_name field_name
If you want to fetch all fields and their values, use the HGETALL
command.
HGETALL hash_name
To get elements from a list, use the LRANGE
command along with the start and end indexes.
LRANGE list_name start_index end_index
Use the SMEMBERS
command to retrieve all members in a set.
SMEMBERS set_name
Retrieve members within a range of scores using the ZRANGE
command.
ZRANGE sorted_set_name min_score max_score [WITHSCORES]
Replace min_score
and max_score
with the desired score range. Add the optional [WITHSCORES]
argument to include the member scores in the result.
These are just a few examples of Redis commands for querying data. You can find a comprehensive list of commands in the Redis documentation.
Dragonfly is fully compatible with the Redis ecosystem and requires no code changes to implement.