flask模块化、封装使用缓存cache(flask

flask模块化、封装使用缓存cache(flask_caching)

1.安装flask_caching库

pip install flask_caching

2.创建utils Python 软件包以及cache_helper.py

2.1cache_helper.py代码

from flask_caching import Cachecache = Cache()class CacheHelper:def __init__(self, app, config):cache.init_app(app, config)@staticmethoddef get(key):return cache.get(key)@staticmethoddef set(key, value, timeout=None):cache.set(key, value, timeout=timeout)@staticmethoddef delete(key):cache.delete(key)

3.app.py文件中代码

3.1.初始化cache代码

# 初始化cache,硬编码方式配置缓存
# cache = CacheHelper(app, config={'CACHE_TYPE': 'simple'})
# 初始化cache,读取配置文件方式配置缓存
cache = CacheHelper(app,  config=cache_config)

3.2.config.py完整代码如下

# 配置Cache缓存类型参数值
cache_config = {'CACHE_TYPE': 'simple'  # 使用本地python字典进行存储，线程非安全
}

3. service中使用cache，my_service.py完整代码

3.1my_service.py中使用cache代码

from flask import Flaskfrom utils.cache_helper import cacheclass MyService:@staticmethoddef set_my_cache():# 写入缓存，过期时间为60秒cache.set('my_cache', "你好！cache", timeout=60)@staticmethoddef get_my_cache():# 读取缓存my_cache = cache.get('my_cache')return my_cache

4.app.py完整代码

4.1调用my_service.py(MyService类)中的方法

from flask import Flaskfrom config.config import cache_config
from services.my_service import MyService
from utils.cache_helper import CacheHelperapp = Flask(__name__)# 初始化cache,硬编码方式配置缓存
# cache = CacheHelper(app, config={'CACHE_TYPE': 'simple'})
# 初始化cache,读取配置文件方式配置缓存
cache = CacheHelper(app, config=cache_config)@app.route('/')
def hello_world():  # put application's code herereturn 'Hello World!'# 写入缓存
@app.route('/api/SetCache')
def set_cache():MyService.set_my_cache()return 'success'# 读取缓存
@app.route('/api/GetCache')
def get_cache():my_cache = MyService.get_my_cache()return my_cacheif __name__ == '__main__':app.run()