Update cheatsheets

databases/redis.sh

@@ -1,15 +1,15 @@
-##############################################################################
+# *****************************************************************************
 # BASICS
-##############################################################################
+# *****************************************************************************
 
 
 redis-server /path/redis.conf  # start redis with the related configuration file
 redis-cli                      # opens a redis prompt
 
 
-##############################################################################
+# *****************************************************************************
 # STRINGS
-##############################################################################
+# *****************************************************************************
 
 
 APPEND key value                  # append a value to a key
@@ -34,10 +34,10 @@ EXPIRE key 120                    # key will be deleted in 120 seconds
 TTL key                           # returns the number of seconds until a key is deleted
 
 
-##############################################################################
+# *****************************************************************************
 # LISTS
 # A list is a series of ordered values
-##############################################################################
+# *****************************************************************************
 
 
 RPUSH key value [value ...]           # put the new value at the end of the list
@@ -56,11 +56,11 @@ BLPOP key [key ...] timeout           # remove and get the first element in a li
 BRPOP key [key ...] timeout           # remove and get the last element in a list, or block until one is available
 
 
-##############################################################################
+# *****************************************************************************
 # SETS
 # A set is similar to a list, except it does not have a specific order
 # and each element may only appear once. 
-##############################################################################
+# *****************************************************************************
 
 
 SADD key member [member ...]     # add the given value to the set
@@ -74,11 +74,11 @@ SMOVE source destination member  # move a member from one set to another
 SPOP key [count]                 # remove and return one or multiple random members from a set
 
 
-##############################################################################
+# *****************************************************************************
 # SORTED SETS
 # A sorted set is similar to a regular set, but now each value has an associated score.
 # This score is used to sort the elements in the set.
-##############################################################################
+# *****************************************************************************
 
 
 ZADD key [NX|XX] [CH] [INCR] score member [score member ...]  # add one or more members to a sorted set, or update its score if it already exists
@@ -96,11 +96,11 @@ ZSCORE key member                   # get the score associated with the given mm
 ZRANGEBYSCORE key min max [WITHSCORES] [LIMIT offset count]  # return a range of members in a sorted set, by score
 
 
-##############################################################################
+# *****************************************************************************
 # HASHES
 # Hashes are maps between string fields and string values,
 # so they are the perfect data type to represent objects.
-##############################################################################
+# *****************************************************************************
 
 
 HGET key field          # get the value of a hash field
@@ -119,11 +119,11 @@ HSTRLEN key field            # get the length of the value of a hash field
 HVALS key                    # get all the values in a hash
 
 
-##############################################################################
+# *****************************************************************************
 # HYPERLOGLOG
 # HyperLogLog uses randomization in order to provide an approximation of the number
 # of unique elements in a set using just a constant, and small, amount of memory
-##############################################################################
+# *****************************************************************************
 
 
 PFADD key element [element ...]  # add the specified elements to the specified HyperLogLog
@@ -132,9 +132,9 @@ PFCOUNT key [key ...]            # return the approximated cardinality of the se
 PFMERGE destkey sourcekey [sourcekey ...]  # merge N HyperLogLogs into a single one
 
 
-##############################################################################
+# *****************************************************************************
 # PUBLICATION & SUBSCRIPTION
-##############################################################################
+# *****************************************************************************
 
 
 PSUBSCRIBE pattern [pattern ...]             # listen for messages published to channels matching the given patterns
@@ -145,9 +145,9 @@ SUBSCRIBE channel [channel ...]              # listen for messages published to
 UNSUBSCRIBE [channel [channel ...]]          # stop listening for messages posted to the given channels
 
 
-##############################################################################
+# *****************************************************************************
 # OTHER COMMANDS
-##############################################################################
+# *****************************************************************************
 
 
 KEYS pattern  # find all keys matching the given pattern