Memcached

Introduction

The Memcached Extension includes the MemcachedCacheHandler and provides application caching and key/value store support via Memcached.

Documentation References:

API References:

Requirements

Configuration

This extension honors the following config settings under a [cache.memcached] section in any configuration file:

Setting

Description

expire_time

The default time in seconds to expire items in the cache. Default: 0 (does not expire)

hosts

List of memcached servers (comma separated if using a plain text based config handler like configparser).

Usage

Example: Using Memcached Cache Handler
Example: Using Memcached Cache Handler
myapp.py
from cement import App
from cement.utils.misc import init_defaults
CONFIG = init_defaults('myapp', 'cache.memcached')
CONFIG['cache.memcached']['expire_time'] = 300 # seconds
CONFIG['cache.memcached']['hosts'] = ['127.0.0.1']
class MyApp(App):
class Meta:
label = 'myapp'
config_defaults = CONFIG
extensions = ['memcached']
cache_handler = 'memcached'
with MyApp() as app:
# Run the app
app.run()
# Set a cached value
app.cache.set('my_key', 'my value')
# Get a cached value
app.cache.get('my_key')
# Delete a cached value
app.cache.delete('my_key')
# Delete the entire cache
app.cache.purge()
~/.myapp.conf
[myapp]
# set the cache handler to use
cache_handler = memcached
[cache.memcached]
# time in seconds that an item in the cache will expire
expire_time = 3600
# comma seperated list of memcached servers
hosts = 127.0.0.1, cache.example.com