Python redis

import redis

# Read from standalone REDIS
rd = redis.Redis(host='localhost', 
                 port=6379, 
                 db=0)

# write a key
rd.set("Key1", "hello")
# read a key
rd.get("Key1")

Python redis

from redis.sentinel import Sentinel

# This way you can connect to a REDIS cluster via its sentinels
sentinel = Sentinel([('SENTINEL-1', 26379),
                     ('SENTINEL-2', 26379),
                     ('SENTINEL-3', 26379)], 
                    socket_timeout=1, password="password", decode_responses=True)

# Get the current main
main = sentinel.master_for('main_key', socket_timeout=1)
# Get the current subordinates
subordinate = sentinel.slave_for('main_key', socket_timeout=1)

# Set some key on the main
# Writes work only on main
main.set("Py_key1", "hello")

# Read/Get the key from a Subordinate
test = subordinate.get("Py_key1")
print (test)

# Delete a key on the active (main)
main.delete("Py_key1")

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[ WARN:0] global C:\Users\appveyor\AppData\Local\Temp\1\pip-req-build-wwma2wne\o pencv\modules\videoio\src\cap_msmf.cpp (677) CvCapture_MSMF::initStream Failed t o set mediaType (stream 0, (640x480 @ 30) MFVideoFormat_RGB24(codec not found)
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