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https://github.com/Turall/cache-house
https://github.com/Turall/cache-house
caching fastapi python redis redis-cache redis-cluster
Last synced: 21 days ago
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- Host: GitHub
- URL: https://github.com/Turall/cache-house
- Owner: Turall
- License: mit
- Created: 2022-01-01T15:24:33.000Z (over 2 years ago)
- Default Branch: master
- Last Pushed: 2022-02-05T17:25:58.000Z (over 2 years ago)
- Last Synced: 2024-05-14T02:02:05.727Z (about 1 month ago)
- Topics: caching, fastapi, python, redis, redis-cache, redis-cluster
- Language: Python
- Homepage: https://github.com/Turall/cache-house
- Size: 68.4 KB
- Stars: 15
- Watchers: 2
- Forks: 1
- Open Issues: 2
-
Metadata Files:
- Readme: README.md
Lists
- awesome-fastapi - :octocat: cache-house :star: 10+ :fork_and_knife: 1+ - Caching tool for python, working with Redis single instance and Redis cluster mode. (Caching)
README
Caching tool for python, working with Redis single instance and Redis cluster mode
[PyPi link](https://pypi.org/project/cache-house/)
### Installation ###
```sh
$ pip install cache-house
```
or with poetry
```sh
poetry add cache-house
```
*****
### ***Quick Start*** ###
*****
cache decorator work with async and sync functions
```python
from cache_house.backends import RedisFactory
from cache_house.cache import cache
import asyncio
RedisFactory.init()
@cache() # default expire time is 180 seconds
async def test_cache(a: int,b: int):
print("async cached")
return [a,b]
@cache()
def test_cache_1(a: int, b: int):
print("cached")
return [a, b]
if __name__ == "__main__":
print(test_cache_1(3,4))
print(asyncio.run(test_cache(1,2)))
```
Check stored cache key
```sh
➜ $ rdcli KEYS "*"
1) cachehouse:main:8f65aed1010f0062a783c83eb430aca0
2) cachehouse:main:f665833ea64e4fc32653df794257ca06
```
*****
### ***Setup Redis cache instance***
*****
You can pass all [redis-py](https://github.com/redis/redis-py) arguments to RedisCache.init method and additional arguments :
```python
def RedisFactory.init(
host: str = "localhost",
port: int = 6379,
encoder: Callable[..., Any] = ...,
decoder: Callable[..., Any] = ...,
namespace: str = ...,
key_prefix: str = ...,
key_builder: Callable[..., Any] = ...,
password: str = ...,
db: int = ...,
cluster_mode: bool =False
**redis_kwargs
)
```
or you can set your own encoder and decoder functions
```python
from cache_house.backends import RedisFactory
def custom_encoder(data):
return json.dumps(data)
def custom_decoder(data):
return json.loads(data)
RedisFactory.init(encoder=custom_encoder, decoder=custom_decoder)
```
#### ***Default encoder and decoder is pickle module.***
*****
### ***Setup Redis Cluster cache instance***
*****
All manipulation with RedisCache same with a RedisClusterCache
```python
from cache_house.backends import RedisFactory
from cache_house.cache import cache
RedisFactory.init(cluster_mode=True)
@cache()
async def test_cache(a: int,b: int):
print("cached")
return [a,b]
```
```python
def RedisFactory.init( # for redis cluster
cls,
host="localhost",
port=6379,
encoder: Callable[..., Any] = pickle_encoder,
decoder: Callable[..., Any] = pickle_decoder,
namespace: str = DEFAULT_NAMESPACE,
key_prefix: str = DEFAULT_PREFIX,
key_builder: Callable[..., Any] = key_builder,
cluster_mode: bool = False,
startup_nodes=None,
cluster_error_retry_attempts: int = 3,
require_full_coverage: bool = True,
skip_full_coverage_check: bool = False,
reinitialize_steps: int = 10,
read_from_replicas: bool = False,
)
```
*****
### ***Setup cache instance with FastAPI***
*****
```python
import logging
import uvicorn
from fastapi.applications import FastAPI
from cache_house.backends import RedisFactory
from cache_house.cache import cache
app = FastAPI()
@app.on_event("startup")
async def startup():
print("app started")
RedisFactory.init()
@app.on_event("shutdown")
async def shutdown():
print("SHUTDOWN")
RedisFactory.close_connections()
@app.get("/notcached")
async def test_route():
print("notcached")
return {"hello": "world"}
@app.get("/cached")
@cache()
async def test_route():
print("cached") # second time when you request this print is not working
return {"hello": "world"}
if __name__ == "__main__":
uvicorn.run(app, port=8033)
```
*****
### You can set expire time (seconds) , namespace and key prefix in cache decorator ###
*****
```python
@cache(expire=30, namespace="app", key_prefix="test")
async def test_cache(a: int,b: int):
print("cached")
return [a,b]
if __name__ == "__main__":
print(asyncio.run(test_cache(1,2)))
```
Check stored cache
```sh
rdcli KEYS "*"
1) test:app:f665833ea64e4fc32653df794257ca06
```
*****
### ***If your function works with non-standard data types, you can pass custom encoder and decoder functions to the *cache* decorator.***
*****
```python
import asyncio
import json
from cache_house.backends import RedisFactory
from cache_house.cache import cache
RedisFactory.init()
def custom_encoder(data):
return json.dumps(data)
def custom_decoder(data):
return json.loads(data)
@cache(expire=30, encoder=custom_encoder, decoder=custom_decoder, namespace="custom")
async def test_cache(a: int, b: int):
print("async cached")
return {"a": a, "b": b}
@cache(expire=30)
def test_cache_1(a: int, b: int):
print("cached")
return [a, b]
if __name__ == "__main__":
print(asyncio.run(test_cache(1, 2)))
print(test_cache_1(3, 4))
```
Check stored cache
```sh
rdcli KEYS "*"
1) cachehouse:main:8f65aed1010f0062a783c83eb430aca0
2) cachehouse:custom:f665833ea64e4fc32653df794257ca06
```
*****
### ***All examples works fine with Redis Cluster and single Redis instance.***
*****
# Contributing #
#### Free to open issue and send PR ####
### cache-house supports Python >= 3.7