The set
command in Memcached is used to store a value on the server with an associated key. This operation is idempotent, meaning it can be repeated without changing the result beyond the initial application.
Common use cases include:
Here are a couple of examples using the pymemcache client library for Python.
from pymemcache.client import base # Initialize memcached client client = base.Client(('localhost', 11211)) # Set a key-value pair client.set('key', 'value')
In this example, we connect to a Memcached server running locally, then set a key-value pair ('key', 'value').
from pymemcache.client import base # Initialize memcached client client = base.Client(('localhost', 11211)) # Set multiple key-value pairs client.set_multi({'key1': 'value1', 'key2': 'value2'})
In this second example, we use the set_multi
method to set multiple key-value pairs at once.
set
command. It returns a boolean indicating success or failure, which can be useful for error handling.1. Can I store Python objects in Memcached?
Yes, Memcached clients usually serialize objects before storing them, so you can store complex Python objects.
2. What happens when Memcached runs out of memory?
When Memcached runs out of memory, it starts evicting older items to make space for new ones.
Dragonfly is fully compatible with the Redis ecosystem and requires no code changes to implement.