Question 265610 in Memcached Question posted in
A decent usage manual can be found here.

Memcached – How to configure Rails caching to namespace cache keys with the environment?

I’m deploying a Rails 6.1 App on a server that hosts both my staging and my production environments, and has a unique memcached instance.

If I don’t namespace all cache keys, I believe the same keys will be generated in production and staging. Tests on my staging environment will impact production.

I know I could pass a namespace for each call:

Rails.cache.write("some-key", "some-value", namespace: Rails.env)

But it’s error-prone.

I’m looking for a global config saying that all keys should be namespaced with the environment.

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2

Answers


  1. 0

    You can easily do it like this using string interpolation.

    Rails.cache.write("#{Rails.env}-some-key", "some-value")

    The best is to always use separate caching instance for staging and production environments.

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  2. 0

    Put the global config into config/environments/{yourenvironment}.rb as following:

    config.cache_store = :mem_cache_store, {namespace: 'yourenvironment-...' }
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