From 7cb477b66c77aa11bef3b050183fcdde6df8141b Mon Sep 17 00:00:00 2001
From: radinpirouz <pirouz.radin@yahoo.com>
Date: Sun, 18 Jan 2026 00:39:07 +0330
Subject: [PATCH] services doc : redis doc

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 Docs/Redis.md | 172 --------------------------------------------------
 1 file changed, 172 deletions(-)
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-# Python + Redis Quick Guide
-
-This document explains how to set up Python, connect to Redis, and perform basic cache operations.
-
----
-
-## 1. Setup
-
-Install Python and create a virtual environment:
-
-```bash
-sudo apt install python3-full
-python3 -m venv .venv
-source .venv/bin/activate
-```
-
----
-
-## 2. Connect and Test Redis Connection
-
-```python
-import redis
-
-r = redis.Redis(host='localhost', port=6379, db=0)
-print(r.ping())  # Should print True
-```
-
-**Expected Output:**
-
-```
-True
-```
-
----
-
-## 3. Caching Scenario Example
-
-This example demonstrates caching data in Redis with a TTL (Time To Live).
-
-```python
-import redis
-import time
-
-r = redis.Redis(host='localhost', port=6379, db=0)
-
-def get_data_from_db():
-    print("Fetching from DB...")
-    time.sleep(2)  # Simulate slow query
-    return {"user": "alice", "age": 30}
-
-def get_user(user_id):
-    cache_key = f"user:{user_id}"
-    
-    # Check cache first
-    cached = r.get(cache_key)
-    if cached:
-        print("Cache hit")
-        return eval(cached)
-    
-    # Fetch from DB
-    data = get_data_from_db()
-    
-    # Store in Redis with TTL (10 seconds)
-    r.set(cache_key, str(data), ex=10)
-    return data
-
-print(get_user(1))
-print(get_user(1))  # Should hit cache
-```
-
----
-
-## 4. Connect, Set, and Get Example
-
-```python
-import redis
-
-r = redis.Redis(host="192.168.6.160", port=6379, db=0)
-
-r.set('name', 'radin')
-
-name = r.get('name')
-print(name)
-print(name.decode("utf-8"))
-```
-
----
-
-## 5. Interactive Read/Write Example
-
-```python
-import redis
-
-method = int(input("Enter Method: (1.Read/2.Write) "))
-
-r = redis.Redis(host="192.168.6.160", port=6379, db=0)
-
-if method == 1:
-    key = str(input("Enter key name: "))
-    value = r.get(key)
-    if value is None:
-        print("Undefined Key")
-    else:
-        print(value)
-elif method == 2:
-    key = str(input("Enter key name: "))
-    value = str(input("Enter value: "))
-    r.set(key, value)
-else:
-    print("Incorrect Input")
-```
-
----
-
-## 6. Professional Version (Improved Code)
-
-```python
-import redis
-import sys
-
-def connect_redis(host="192.168.6.160", port=6379, db=0):
-    """Establish a connection to Redis."""
-    try:
-        client = redis.Redis(host=host, port=port, db=db, decode_responses=True)
-        # Test connection
-        client.ping()
-        return client
-    except redis.ConnectionError as e:
-        print(f"Error connecting to Redis: {e}")
-        sys.exit(1)
-
-def read_key(client):
-    """Read a key from Redis."""
-    key = input("Enter key name: ").strip()
-    value = client.get(key)
-    if value is None:
-        print("Undefined Key")
-    else:
-        print(f"Value: {value}")
-
-def write_key(client):
-    """Write a key-value pair to Redis."""
-    key = input("Enter key name: ").strip()
-    value = input("Enter value: ").strip()
-    client.set(key, value)
-    print(f"Successfully set key '{key}' with value '{value}'.")
-
-def main():
-    client = connect_redis()
-
-    print("Select Method:")
-    print("1. Read")
-    print("2. Write")
-    
-    try:
-        method = int(input("Enter method (1 or 2): ").strip())
-    except ValueError:
-        print("Invalid input. Please enter 1 or 2.")
-        sys.exit(1)
-
-    if method == 1:
-        read_key(client)
-    elif method == 2:
-        write_key(client)
-    else:
-        print("Incorrect input. Please enter 1 or 2.")
-        sys.exit(1)
-
-if __name__ == "__main__":
-    main()
-```
-