rediskit 0.0.21

A comprehensive Redis toolkit for Python with caching, memoization, and utilities

rediskit

A Python toolkit that provides Redis-backed performance and concurrency primitives for applications. It enables developers to add caching, distributed coordination, and data protection to their Python applications with minimal effort.

Still work in progress

Many features are still under development, there will be many breaking changes. Please use at your own risk.

Features

• Function Result Caching: Use the @RedisMemoize decorator to cache expensive function calls with automatic serialization, compression, and encryption
• Distributed Coordination: Redis-based distributed locks and semaphores for coordinating access across multiple processes/machines
• Data Protection: Multi-version encryption keys with automatic key rotation for sensitive cached data
• Async Support: Full support for both synchronous and asynchronous applications
• Flexible Storage: Choose between string or hash-based Redis storage patterns
• Modern Type Hints: Full type safety with Python 3.12+ syntax

Installation

uv add rediskit
# or
poetry add rediskit

Quick Start

Basic Setup

from rediskit import redis_memoize, init_redis_connection_pool

# Initialize Redis connection pool (call once at app startup)
init_redis_connection_pool()


# Cache expensive function results
@redis_memoize(memoize_key="expensive_calc", ttl=300)
def expensive_calculation(tenantId: str, value: int) -> dict:
    # Simulate expensive computation
    import time
    time.sleep(2)
    return {"result": value * 42}


# Usage
result = expensive_calculation("tenant1", 10)  # Takes 2 seconds
result = expensive_calculation("tenant1", 10)  # Returns instantly from cache

Custom Redis Connection

import redis
from rediskit import redis_memoize

# Use your own Redis connection
my_redis = redis.Redis(host='my-redis-host', port=6379, db=1)


@redis_memoize(
    memoize_key="custom_calc",
    ttl=600,
    connection=my_redis
)
def my_function(tenantId: str, data: dict) -> dict:
    return {"processed": data}

Advanced Caching Options

from rediskit import redis_memoize


# Hash-based storage with encryption
@redis_memoize(
    memoize_key=lambda tenantId, user_id: f"user_profile:{tenantId}:{user_id}",
    ttl=3600,
    storage_type="hash",  # Store in Redis hash for efficient field access
    enable_encryption=True,  # Encrypt sensitive data
    cache_type="zipJson"  # JSON serialization with compression
)
def get_user_profile(tenantId: str, user_id: str) -> dict:
    # Fetch user data from database
    return {"user_id": user_id, "name": "John Doe", "email": "[e-mail]"}


# Dynamic TTL and cache bypass
@redis_memoize(
    memoize_key="dynamic_data",
    ttl=lambda tenantId, priority: 3600 if priority == "high" else 300,
    bypass_cache=lambda tenantId, force_refresh: force_refresh
)
def get_dynamic_data(tenantId: str, priority: str, force_refresh: bool = False) -> dict:
    return {"data": "fresh_data", "priority": priority}

Async Support

import asyncio
from rediskit import redis_memoize, init_async_redis_connection_pool

# Initialize async Redis connection pool
await init_async_redis_connection_pool()


@redis_memoize(memoize_key="async_calc", ttl=300)
async def async_expensive_function(tenantId: str, value: int) -> dict:
    await asyncio.sleep(1)  # Simulate async work
    return {"async_result": value * 100}


# Usage
result = await async_expensive_function("tenant1", 5)

Distributed Locking

from rediskit import get_redis_mutex_lock, get_async_redis_mutex_lock

# Synchronous distributed lock
with get_redis_mutex_lock("critical_section", expire=30) as lock:
    # Only one process can execute this block at a time
    perform_critical_operation()

# Async distributed lock
async with get_async_redis_mutex_lock("async_critical_section", expire=30) as lock:
    await perform_async_critical_operation()

Encryption Management

from rediskit import Encrypter

# Generate new encryption keys
encrypter = Encrypter()
new_key = encrypter.generate_new_hex_key()

# Encrypt/decrypt data manually
encrypted = encrypter.encrypt("sensitive data", useZstd=True)
decrypted = encrypter.decrypt(encrypted)

Configuration

Configure rediskit using environment variables:

# Redis connection settings
export REDISKIT_REDIS_HOST="localhost"
export REDISKIT_REDIS_PORT="6379"
export REDISKIT_REDIS_PASSWORD=""

# Encryption keys (base64-encoded JSON)
export REDISKIT_ENCRYPTION_SECRET="eyJfX2VuY192MSI6ICI0MGViODJlNWJhNTJiNmQ4..."

# Cache settings
export REDISKIT_REDIS_TOP_NODE="my_app_cache"
export REDISKIT_REDIS_SKIP_CACHING="false"

API Reference

Core Decorators

@RedisMemoize

Cache function results in Redis with configurable options.

Parameters:

• memoizeKey: Cache key (string or callable)
• ttl: Time to live in seconds (int, callable, or None)
• bypassCache: Skip cache lookup (bool or callable)
• cacheType: Serialization method ("zipJson" or "zipPickled")
• resetTtlUponRead: Refresh TTL when reading from cache
• enableEncryption: Encrypt cached data
• storageType: Redis storage pattern ("string" or "hash")
• connection: Custom Redis connection (optional)

Connection Management

• init_redis_connection_pool(): Initialize sync Redis connection pool
• init_async_redis_connection_pool(): Initialize async Redis connection pool
• get_redis_connection(): Get sync Redis connection
• get_async_redis_connection(): Get async Redis connection

Distributed Locking

• GetRedisMutexLock(name, expire, auto_renewal, id): Get sync distributed lock
• GetAsyncRedisMutexLock(name, expire, auto_renewal): Get async distributed lock

Encryption

• Encrypter(keyHexDict): Encryption/decryption with key versioning

Requirements

• Python 3.12+
• Redis server
• Dependencies: redis, redis-lock, nacl, zstd

License

Apache-2.0 license