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πŸ”₯ 5 ΠΏΡ€ΠΈΠΌΠ΅Ρ€ΠΎΠ² использования Redis с ΠΊΠΎΠ΄ΠΎΠΌ Π½Π° Python

1. Caching
Redis ΠΌΠΎΠΆΠ½ΠΎ ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΠΎΠ²Π°Ρ‚ΡŒ для ΠΊΡΡˆΠΈΡ€ΠΎΠ²Π°Π½ΠΈΡ часто ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΡƒΠ΅ΠΌΡ‹Ρ… Π΄Π°Π½Π½Ρ‹Ρ…, сниТая Π½Π°Π³Ρ€ΡƒΠ·ΠΊΡƒ Π½Π° вашС основноС Ρ…Ρ€Π°Π½ΠΈΠ»ΠΈΡ‰Π΅ Π΄Π°Π½Π½Ρ‹Ρ…. Π’ΠΎΡ‚ ΠΏΡ€ΠΈΠΌΠ΅Ρ€ Ρ‚ΠΎΠ³ΠΎ, ΠΊΠ°ΠΊ Ρ€Π΅Π°Π»ΠΈΠ·ΠΎΠ²Π°Ρ‚ΡŒ ΠΊΡΡˆΠΈΡ€ΠΎΠ²Π°Π½ΠΈΠ΅ с ΠΏΠΎΠΌΠΎΡ‰ΡŒΡŽ Redis Π² Python

import redis

# Connect to Redis
r = redis.Redis(host='localhost', port=6379, db=0)

def get_data_from_cache(key):
# Check if data exists in the cache
if r.exists(key):
# Retrieve data from the cache
data = r.get(key)
return data.decode('utf-8') # Convert bytes to string
else:
# Fetch data from the primary data source
data = fetch_data_from_source()

# Store data in the cache with a timeout of 1 hour
r.setex(key, 3600, data)
return data


2. Pub/Sub (Publish/Subscribe):
Redis ΠΏΠΎΠ΄Π΄Π΅Ρ€ΠΆΠΈΠ²Π°Π΅Ρ‚ ΠΏΠ°Ρ‚Ρ‚Π΅Ρ€Π½ pub/sub, позволяя Π²Π°ΠΌ ΡΠΎΠ·Π΄Π°Π²Π°Ρ‚ΡŒ систСмы ΠΎΠ±ΠΌΠ΅Π½Π° сообщСниями. Π’ΠΎΡ‚ ΠΏΡ€ΠΈΠΌΠ΅Ρ€:

import redis
import time

# Connect to Redis
r = redis.Redis(host='localhost', port=6379, db=0)

def publish_message(channel, message):
# Publish a message to the specified channel
r.publish(channel, message)

def subscribe_channel(channel):
# Subscribe to a channel and process incoming messages
pubsub = r.pubsub()
pubsub.subscribe(channel)

for message in pubsub.listen():
print(message['data'].decode('utf-8')) # Process the received message


3. Rate Limiting:
Redis ΠΌΠΎΠΆΠ½ΠΎ ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΠΎΠ²Π°Ρ‚ΡŒ для Ρ€Π΅Π°Π»ΠΈΠ·Π°Ρ†ΠΈΠΈ ограничСния скорости, Ρ‡Ρ‚ΠΎΠ±Ρ‹ ΠΊΠΎΠ½Ρ‚Ρ€ΠΎΠ»ΠΈΡ€ΠΎΠ²Π°Ρ‚ΡŒ количСство запросов ΠΈΠ»ΠΈ ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΉ Π·Π° ΠΏΠ΅Ρ€ΠΈΠΎΠ΄ Π²Ρ€Π΅ΠΌΠ΅Π½ΠΈ. ΠŸΡ€ΠΈΠΌΠ΅Ρ€:

import redis

# Connect to Redis
r = redis.Redis(host='localhost', port=6379, db=0)

def check_rate_limit(ip_address):
# Increment the request count for the IP address
request_count = r.incr(ip_address)

# If the count exceeds the limit (e.g., 100 requests per minute), deny the request
if request_count > 100:
return False

return True


4. Session Storage:
Redis ΠΌΠΎΠΆΠ½ΠΎ ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΠΎΠ²Π°Ρ‚ΡŒ для хранСния Π΄Π°Π½Π½Ρ‹Ρ… сСанса Π² Π²Π΅Π±-прилоТСниях. ΠŸΡ€ΠΈΠΌΠ΅Ρ€:

import redis
import uuid

# Connect to Redis
r = redis.Redis(host='localhost', port=6379, db=0)

def create_session(user_id):
# Generate a unique session ID
session_id = str(uuid.uuid4())

# Store the session data in Redis with a timeout of 30 minutes
r.setex(session_id, 1800, user_id)

return session_id

def get_user_id_from_session(session_id):
# Retrieve the user ID from the session data in Redis
user_id = r.get(session_id)

if user_id is not None:
return user_id.decode('utf-8') # Convert bytes to string
else:
return None


5. Leaderboard:
Redis ΠΌΠΎΠΆΠ½ΠΎ ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΠΎΠ²Π°Ρ‚ΡŒ для создания Ρ‚Π°Π±Π»ΠΈΡ† Π»ΠΈΠ΄Π΅Ρ€ΠΎΠ² ΠΈΠ»ΠΈ Ρ€Π΅ΠΉΡ‚ΠΈΠ½Π³ΠΎΠ² Π½Π° основС Π½Π°Π±Ρ€Π°Π½Π½Ρ‹Ρ… Π±Π°Π»Π»ΠΎΠ². ΠŸΡ€ΠΈΠΌΠ΅Ρ€:

import redis

# Connect to Redis
r = redis.Redis(host='localhost', port=6379, db=0)

def update_score(player_id, score):
# Update the score of a player
r.zadd('leaderboard', {player_id: score})

def get_leaderboard():
# Get the top 10 players from the leaderboard
leaderboard = r.zrevrange('leaderboard', 0, 9, withscores=True)

for player, score in leaderboard:
print(f"Player: {player.decode('utf-8')}, Score: {score}")


Π­Ρ‚ΠΎ лишь нСсколько ΠΏΡ€ΠΈΠΌΠ΅Ρ€ΠΎΠ² Ρ‚ΠΎΠ³ΠΎ, ΠΊΠ°ΠΊ Redis ΠΌΠΎΠΆΠ½ΠΎ ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΠΎΠ²Π°Ρ‚ΡŒ Π² Python. Redis прСдоставляСт мноТСство Π΄Ρ€ΡƒΠ³ΠΈΡ… ΠΌΠΎΡ‰Π½Ρ‹Ρ… Ρ„ΡƒΠ½ΠΊΡ†ΠΈΠΉ ΠΈ структур Π΄Π°Π½Π½Ρ‹Ρ…, ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Π΅ ΠΌΠΎΠΆΠ½ΠΎ ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΠΎΠ²Π°Ρ‚ΡŒ Π² Ρ€Π°Π·Π»ΠΈΡ‡Π½Ρ‹Ρ… прилоТСниях.

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πŸ”₯ 5 ΠΏΡ€ΠΈΠΌΠ΅Ρ€ΠΎΠ² использования Redis с ΠΊΠΎΠ΄ΠΎΠΌ Π½Π° Python

1. Caching
Redis ΠΌΠΎΠΆΠ½ΠΎ ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΠΎΠ²Π°Ρ‚ΡŒ для ΠΊΡΡˆΠΈΡ€ΠΎΠ²Π°Π½ΠΈΡ часто ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΡƒΠ΅ΠΌΡ‹Ρ… Π΄Π°Π½Π½Ρ‹Ρ…, сниТая Π½Π°Π³Ρ€ΡƒΠ·ΠΊΡƒ Π½Π° вашС основноС Ρ…Ρ€Π°Π½ΠΈΠ»ΠΈΡ‰Π΅ Π΄Π°Π½Π½Ρ‹Ρ…. Π’ΠΎΡ‚ ΠΏΡ€ΠΈΠΌΠ΅Ρ€ Ρ‚ΠΎΠ³ΠΎ, ΠΊΠ°ΠΊ Ρ€Π΅Π°Π»ΠΈΠ·ΠΎΠ²Π°Ρ‚ΡŒ ΠΊΡΡˆΠΈΡ€ΠΎΠ²Π°Π½ΠΈΠ΅ с ΠΏΠΎΠΌΠΎΡ‰ΡŒΡŽ Redis Π² Python

import redis

# Connect to Redis
r = redis.Redis(host='localhost', port=6379, db=0)

def get_data_from_cache(key):
# Check if data exists in the cache
if r.exists(key):
# Retrieve data from the cache
data = r.get(key)
return data.decode('utf-8') # Convert bytes to string
else:
# Fetch data from the primary data source
data = fetch_data_from_source()

# Store data in the cache with a timeout of 1 hour
r.setex(key, 3600, data)
return data


2. Pub/Sub (Publish/Subscribe):
Redis ΠΏΠΎΠ΄Π΄Π΅Ρ€ΠΆΠΈΠ²Π°Π΅Ρ‚ ΠΏΠ°Ρ‚Ρ‚Π΅Ρ€Π½ pub/sub, позволяя Π²Π°ΠΌ ΡΠΎΠ·Π΄Π°Π²Π°Ρ‚ΡŒ систСмы ΠΎΠ±ΠΌΠ΅Π½Π° сообщСниями. Π’ΠΎΡ‚ ΠΏΡ€ΠΈΠΌΠ΅Ρ€:

import redis
import time

# Connect to Redis
r = redis.Redis(host='localhost', port=6379, db=0)

def publish_message(channel, message):
# Publish a message to the specified channel
r.publish(channel, message)

def subscribe_channel(channel):
# Subscribe to a channel and process incoming messages
pubsub = r.pubsub()
pubsub.subscribe(channel)

for message in pubsub.listen():
print(message['data'].decode('utf-8')) # Process the received message


3. Rate Limiting:
Redis ΠΌΠΎΠΆΠ½ΠΎ ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΠΎΠ²Π°Ρ‚ΡŒ для Ρ€Π΅Π°Π»ΠΈΠ·Π°Ρ†ΠΈΠΈ ограничСния скорости, Ρ‡Ρ‚ΠΎΠ±Ρ‹ ΠΊΠΎΠ½Ρ‚Ρ€ΠΎΠ»ΠΈΡ€ΠΎΠ²Π°Ρ‚ΡŒ количСство запросов ΠΈΠ»ΠΈ ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΉ Π·Π° ΠΏΠ΅Ρ€ΠΈΠΎΠ΄ Π²Ρ€Π΅ΠΌΠ΅Π½ΠΈ. ΠŸΡ€ΠΈΠΌΠ΅Ρ€:

import redis

# Connect to Redis
r = redis.Redis(host='localhost', port=6379, db=0)

def check_rate_limit(ip_address):
# Increment the request count for the IP address
request_count = r.incr(ip_address)

# If the count exceeds the limit (e.g., 100 requests per minute), deny the request
if request_count > 100:
return False

return True


4. Session Storage:
Redis ΠΌΠΎΠΆΠ½ΠΎ ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΠΎΠ²Π°Ρ‚ΡŒ для хранСния Π΄Π°Π½Π½Ρ‹Ρ… сСанса Π² Π²Π΅Π±-прилоТСниях. ΠŸΡ€ΠΈΠΌΠ΅Ρ€:

import redis
import uuid

# Connect to Redis
r = redis.Redis(host='localhost', port=6379, db=0)

def create_session(user_id):
# Generate a unique session ID
session_id = str(uuid.uuid4())

# Store the session data in Redis with a timeout of 30 minutes
r.setex(session_id, 1800, user_id)

return session_id

def get_user_id_from_session(session_id):
# Retrieve the user ID from the session data in Redis
user_id = r.get(session_id)

if user_id is not None:
return user_id.decode('utf-8') # Convert bytes to string
else:
return None


5. Leaderboard:
Redis ΠΌΠΎΠΆΠ½ΠΎ ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΠΎΠ²Π°Ρ‚ΡŒ для создания Ρ‚Π°Π±Π»ΠΈΡ† Π»ΠΈΠ΄Π΅Ρ€ΠΎΠ² ΠΈΠ»ΠΈ Ρ€Π΅ΠΉΡ‚ΠΈΠ½Π³ΠΎΠ² Π½Π° основС Π½Π°Π±Ρ€Π°Π½Π½Ρ‹Ρ… Π±Π°Π»Π»ΠΎΠ². ΠŸΡ€ΠΈΠΌΠ΅Ρ€:

import redis

# Connect to Redis
r = redis.Redis(host='localhost', port=6379, db=0)

def update_score(player_id, score):
# Update the score of a player
r.zadd('leaderboard', {player_id: score})

def get_leaderboard():
# Get the top 10 players from the leaderboard
leaderboard = r.zrevrange('leaderboard', 0, 9, withscores=True)

for player, score in leaderboard:
print(f"Player: {player.decode('utf-8')}, Score: {score}")


Π­Ρ‚ΠΎ лишь нСсколько ΠΏΡ€ΠΈΠΌΠ΅Ρ€ΠΎΠ² Ρ‚ΠΎΠ³ΠΎ, ΠΊΠ°ΠΊ Redis ΠΌΠΎΠΆΠ½ΠΎ ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΠΎΠ²Π°Ρ‚ΡŒ Π² Python. Redis прСдоставляСт мноТСство Π΄Ρ€ΡƒΠ³ΠΈΡ… ΠΌΠΎΡ‰Π½Ρ‹Ρ… Ρ„ΡƒΠ½ΠΊΡ†ΠΈΠΉ ΠΈ структур Π΄Π°Π½Π½Ρ‹Ρ…, ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Π΅ ΠΌΠΎΠΆΠ½ΠΎ ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΠΎΠ²Π°Ρ‚ΡŒ Π² Ρ€Π°Π·Π»ΠΈΡ‡Π½Ρ‹Ρ… прилоТСниях.

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@pro_python_code

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