Exactly what the doctor ordered.
Included modules:
- rxkeys - extended keys commands (Module Hub page)
- rxstrings - extended Strings commands (Module Hub page)
- rxhashes - extended Hashes commands (Module Hub page)
- rxlists - extended Lists commands (Module Hub page)
- rxsets - extended Sets commands (Module Hub page)
- rxzsets - extended Sorted Sets commands (Module Hub page)
- rxgeo - extended Geo Sets commands (Module Hub page)
- Build a Redis server with support for modules (currently available from the unstable branch).
- Build the redex modules:
make - To load a module, Start Redis with the
--loadmodule /path/to/module.sooption, add it as a directive to the configuration file or send aMODULE LOADcommand.
This module provides extended Redis keys commands.
Time complexity: O(N) where N is the number of keys in the database.
Returns keys with names matching pattern. pattern should be given as a POSIX Extended Regular Expression.
Return: Array of Strings, the key names matching.
Time complexity: O(N)+O(M) where N is the number of keys in the database and M is the number of elements to delete. The deletion's complexity is O(1) for Strings, and O(L) for keys with multiple elements, where L is the number of elements.
Deletes keys with names matching pattern. pattern should be given as a POSIX Extended Regular Expression.
Return: Integer, the number of keys deleted.
This module provides extended Redis Strings commands.
Time complexity: O(1) + O(
command)
Checks a String 'key' for 'value' equality and executes a Redis command on it.
The command can be any of the following Redis String commands:
APPENDDECR[BY]GETSETINCR[BY]INCRBYFLOATPSETEXSET[EX|NX]
The XX flag means that the key must exist for the equality to be evaluated.
Note: the key shouldn't be repeated for the executed command.
Reply: Null if not equal or for non existing key when the XX flag is used.
On success, the reply depends on the actual command executed.
Time complexity: O(1). The amortized time complexity is O(1) assuming the prepended value is small and the already present value is of any size, since the dynamic string library used by Redis will double the free space available on every reallocation.
Prepends a value to a String key.
If key does not exist it is created and set as an empty string, so PREPEND will be similar to SET in this special case.
Reply: Integer, the length of the string after the prepend operation.
Time complexity: O(N) where N is the size of the range generated.
Generates a random string, starting at 'offset' and of length 'length'. An
optional charset may be provided:
ALPHA- letters only: a-zDIGIT- digits only: 0-9ALNUM- letters and digitsPUNC- all printable characters other than alphanumericsHEX- hexadecimal: a-f, 0-9CURSE- censored profanity (!@#$%^&?*)BINARY- all characters between 0 and 255READABLE- letters only, but more pronounceableTEXT- this is the default, any printable character (union ofALPHA+DIGIT+PUNC)
Additionally, an optional charcase argument can be provided:
MIXEDCASE- this is the default, a mix of upper and lower case. Treated asLOWERCASEcharcase forHEXandREADABLEcharsets.LOWERCASE- uses only lowercase lettersUPPERCASE- uses only uppercase letters
Credit: Meni Katz
Reply: Integer, the length of the String after it was modified.
This module provides extended Redis Hashes commands.
Time complexity: O(1)
Sets the field in Hash key to value and returns the previous value, if any.
Reply: String, the previous value or NULL if field didn't exist.
This module provides extended Redis Lists commands.
Time complexity: O(N+M) where N is the number of elements added and M is the number of elements trimmed.
Pushes elements to the head of a list, but trims it from the opposite end to cap afterwards, if reached.
Reply: Integer, the list's new length.
Time complexity: O(N+M) where N is the number of elements added and M is the number of elements trimmed.
Pushes elements to the tail of a list, but trims it from the opposite end to cap afterwards, if reached.
Reply: Integer, the list's new length.
Time complexity: O(1)
Pops an element from the head of srclist and pushes it to the tail of dstlist.
Reply: Bulk string, the element.
Time complexity: O(N) where N is the number of elements that were popped.
Pops count elements from the head of list.
If less than count elements are available, it pops as many as possible.
Reply: Array of popped elements.
Time complexity: O(N) where N is the number of elements that were popped.
Pops count elements from the tail of list.
If less than count elements are available, it pops as many as possible.
Note: RMPOP returns the elements in head-to-tail order.
Reply: Array of popped elements.
Time complexity: O(N) where N is the number of elements moved.
Moves 'count' elements from the tail of 'srclist' to the head of 'dstlist'.
If less than count elements are available, it moves as much elements as possible.
Reply: Integer, the new length of srclist.
Copied from: redis/src/modules/helloworld.c
Time complexity: O(N) where N is the number of elements moved.
Moves count from one end of srclist to one of dstlist's ends.
If less than count elements are available, it moves as much elements as possible.
A positive count removes elements from the head of srclist, and negative from its end.
The optional ATTACH subcommand specifies the end of dstlist to which elements are added and end can be either 0 meaning list's head (the default), or -1 for its tail.
To maintain the order of elements from srclist, LSPLICE may perform extra work depending on the count sign and end.
The optional ORDER subscommand specifies how elements will appear in destlist. The default ASC order means that the series of attached elements will be ordered as in the source list from left to right. DESC will cause the elements to be reversed.
NOEFFORT avoids the extra work, so the order determined is:
| count | end | NOEFFORT |
|---|---|---|
| + | 0 | DESC |
| - | 0 | ASC |
| + | -1 | ASC |
| - | -1 | DESC |
Reply: Integer, the remaining number of elements in 'srclist'.
This module provides extended Redis Sets commands.
Time complexity: O(N) where N is the number of keys.
Checks for member's membership in multiple sets.
Reply: Integer, the count of sets to which member belongs.
This module provides extended Redis Sorted Sets commands.
Time complexity: O(LogN) where N is the number of elements in the Sorted Set.
Pops the element with the lowest score from a Sorted Set.
Reply Array reply, the element popped, optionally with the score in case that the 'WITHSCORE' option is given.
Time complexity: O(LogN) where N is the number of elements in the Sorted Set.
Pops the element with the highest score from a Sorted Set.
Reply Array reply, the element popped, optionally with the score in case that the 'WITHSCORE' option is given.
Time complexity: O(N*LogM) where N is the number of elements added and M is the number of elements in the Sorted Set.
Adds members to a Sorted Set, keeping it at cap cardinality. Removes top scoring members as needed to meet the limit.
Reply: Integer, the number of members added.
Time complexity: O(N*LogM) where N is the number of elements added and M is the number of elements in the Sorted Set.
Adds members to a Sorted Set, keeping it at cap cardinality. Removes bottom scoring members as needed to meet the limit.
Reply: Integer, the number of members added.
Time complexity: O(N*LogM) where N is the number of elements passed as arguments to the command and M is the number of elements in the Sorted Set.
A variadic variant for ZRANK, returns the ranks of multiple members in a Sorted Set.
Reply: Array of Integers.
Time complexity: O(N*LogM) where N is the number of elements passed as arguments to the command and M is the number of elements in the Sorted Set.
A variadic variant for ZREVRANK, returns the reverse ranks of multiple members in a Sorted Set.
Reply: Array of Integers.
Time complexity: O(N*LogM) where N is the number of elements passed as arguments to the command and M is the number of elements in the Sorted Set.
A variadic variant for ZSCORE, returns the scores of multiple members in a Sorted Set.
Reply: Array of Strings.
Time complexity: O(numkeys*log(N) + K*log(numkeys)) where N is the number of elements in a Sorted Set.
Union multiple Sorted Sets and return the K elements with lowest scores. Refer to ZUNIONSTORE's documentation for details on using the command.
Reply: Array reply, the top k elements (optionally with the score, in case the 'WITHSCORES' option is given).
Time complexity: O(numkeys*log(N) + K*log(numkeys)) where N is the number of elements in a Sorted Set.
Union multiple Sorted Sets and return the K elements with highest scores. Refer to ZUNIONSTORE's documentation for details on using the command.
Reply: Array reply, the top k elements (optionally with the score, in case the 'WITHSCORES' option is given).
This module provides extended Redis Geo Sets commands.
Time complexity: O(N*LogN) where N is the number of points in the Geo Set.
Density based spatial clustering with random sampling. Creates a set of Geo Sets from geoset, each being a cluster.
radius is the maximum distance between near neighbours in the cluster, and min-points is a cluster's minimum size.
The default cluster namespace is 'DBRS', geo cluster keys are created using the following syntax: namespace:{geoset}:....
Note: the sampling isn't really random, but that shouldn't matter.
More information:
- http://www.ucalgary.ca/wangx/files/wangx/dbrs.pdf
- http://www.ucalgary.ca/wangx/files/wangx/comparison.pdf
Reply: Integer, the number of clusters created
Oh so much :)
Issue reports, pull and feature requests are welcome.
AGPLv3 - see LICENSE
