Nosql&redis

I. Learning NoSQL

1. Case and Comment
Import Redis

R = Redis. Redis (host= "192.168.48.136", port=6379, Db=0)
Print (R)
Print (R.keys ())
Print (R.get ("AAA"). Decode ("Utf-8"))

# string manipulation
# Get (Key)
# Set (key, value)
# mget (K1, K2, K3, K4)
# Mset (K1=V1, K2=v2)

# operation of the list
# Add Lpush (name, value) to the left
# Add Rpush (name, value) to the right
# Insert Linsert (name, where, Refvalue, value)
# Left Delete lpop (name)
# Lrange values in list by sharding (name, start, end)
# Modify a value in the list LSet (name, index, value)
# Delete the specified value Lrem (name, value, num) num defaults to 0, delete all, num=2 remove 2 elements from left to right, num=-1 remove two elements from right to left

R.lpush ("Testlist1", 1)
R.lpush ("Testlist1", 2, 3, 4)
Print (R.lrange ("Testlist1", 0,-1))


# set operation
# Add Sadd (name, values)
# get SCard (name)
# delete Spop (name) s.srem (name, value)
# and set Sunion (keys) For example: Suniion ("A", "B", "C")
# intersection Sinter (Key)


# hash Main to master the operation of string and hash
# get the details of key Hgetall (name)
# set a single element Hset (name, key, value)
# Set multiple elements Hmset (name, {"Key": "Value"})
# get a single element Hget (name, key)
# Get multiple elements Hmget (name, keys)
# Get multiple key Hkeys (name)
# Get multiple value hvals (name)
# Determine if key exists hexists (name, key)
# Delete key Hdel (name, keys)
# Get length Hlen (name)
R.hset ("Testhash", "K1", "v1")
Print (R.hget ("Testhash", "K1"))
Print (R.hgetall ("Testhash"))

R.hmset ("testhash111", Dict (k1= "v1", k2= "v2", k3= "V3"))
Print (R.hgetall ("testhash111"))


# Other common operations for all types
# R.keys () View all keys
# r.delete (names) Delete keys
# r.exists (name) to determine if there is
# r.rename (SRC, DST) New old
# R.expire (name, time) set timeout
# R.type (name) to see what type of Redis data the name belongs to
# R.move (name, DB) move the name from the db of the principle to the DB Library
# r.flushall () Delete all keys

Case two.

Import Memcache

MC = Memcache. Client ([' 192.168.48.136:12000 '])
Print (MC)
Mc.set ("AAA", "Hello World")
Print (Mc.get ("AAA"))

# Set (key, value)
# Get (Key)
# Repalce (Key, New_value)
# set = add + replace ()
# Delete (key)
# Get_multi ([K1, K2, K3])
# Delete_multi ([K1, K2, K3])
# Set_multi ({"K1": "V1", "K2": "V2"})
# append (k, appendvalue)
# prepend (k, Prependvalue)
Mc.append ("AAA", "321")
Print (Mc.get ("AAA"))
Mc.prepend ("AAA", "123")
Print (Mc.get ("AAA"))
Print (Mc.stats)




# Mc.add ("Mctestadd", "Nihaoma")
# Print (Mc.get ("Mctestadd"))

Nosql&redis