flask配置使用redis缓存

下载

pip3 install flask_cache

使用

from flask import Flask
from flask_cache import Cache # pip3 install flask_cache

config = {
  'CACHE_TYPE': 'redis',
  'CACHE_REDIS_HOST': 'xx.xx.xx.xx', # redis ip
  'CACHE_REDIS_PORT': 6379,  # port
  'CACHE_REDIS_DB': '2',   # 使用的redis db
  'CACHE_REDIS_PASSWORD': ''
}
app = Flask(__name__)
#cache = Cache(app=app,config=config)  # moudle flask.ext not found
cache = Cache(app=app,config=config,with_jinja2_ext=False) 

@app.route('/')
@cache.cached(timeout=50,key_prefix='view_%s')  # key_prefix 指定redis以路由名为key
def index():
    return 'hello'



if __name__ == "__main__":
    print('server started')
	app.run(host='0.0.0.0',port='8540')

解决 moudle flask.ext not found

cache = Cache(app=app,config=config,with_jinja2_ext=False)
#cache = Cache(app=app,config=config) # moudle flask.ext not found
Cache 如果不指定with_jinja2_ext=False 会出现No module named 'flask.ext’报错：

Traceback (most recent call last):
  File "/data/workspace/test/flask_websocket/ws_server.py", line 17, in 
    cache = Cache(app=app,config=config)  # moudle flask.ext not found
  File "/usr/local/python3/lib/python3.6/site-packages/flask_cache/__init__.py", line 121, in __init__
    self.init_app(app, config)
  File "/usr/local/python3/lib/python3.6/site-packages/flask_cache/__init__.py", line 156, in init_app
    from .jinja2ext import CacheExtension, JINJA_CACHE_ATTR_NAME
  File "/usr/local/python3/lib/python3.6/site-packages/flask_cache/jinja2ext.py", line 33, in 
    from flask.ext.cache import make_template_fragment_key
ModuleNotFoundError: No module named 'flask.ext'

结果

访问localhost:8540 后redis中写入了key 为flask_cache_view_/ 数据为 hello的缓存。