Redis Command Reference

Recently planning to use the Redis sorting function, so there is contact, found excellent, more than memcache feature rich. Introduce a part first, learn slowly later, slowly add.

To clarify one point, in Redis,key denotes the name of an ordered set, which is actually a member-value pair.

One, Sorted set (ordered set)

Oneself crooked, orderly set bottom should be insert sort algorithm

Zadd: The value of one or more member is score and stored in an ordered set. Increase, change

  Zadd Key score member  [score member]
Example:     'mysortedset'     jim_id '     // Mysortedset is the name of the ordered collection, because many collections can be built. 90 for the score is value,jim_id is key. Attention, order .

Zrem: Remove a key-value to Delete

Zrem Key member Example:    Zrem mysortedset jim_id  // Delete jim_id This key-value pair. 

Zscore: Get value values check

Zscore Key member Example:    Zscore mysortedset jim_id  // Gets the value of jim_id in the Mysortedset collection

Zrank: Returns the rank of Menber, sorted by score value from small to large, No. 0 bit score value is minimal. If you want to score from the big to the small row, use Zrevrank.

Zrank Key member Example:     // get ranking of score values for jim_id

Zcard: Returns the cardinality of an ordered set key

Zcard Key Example:     // Mysortedset is an ordered collection name, returning the number of key-value pairs, similar to MySQL's count (*)

Zcount: Returns the number of intervals

zcount Key min Max example:      -  -  // returns the number of value values before 50~100 in the Mysortedset collection

Zincrby: Add or Subtract value

Zincrby Key Increment member Example:     -5 jim_id  // give jim_id this value, minus 5

Redis Command Reference