v2.2.1 - Show latest stable - 1 note - Class: ActiveSupport::Cache::MemCacheStore
write(key, value, options = nil) public

Writes a value to the cache.

Possible options:

  • :unless_exist - set to true if you don’t want to update the cache if the key is already set.
  • :expires_in - the number of seconds that this value may stay in the cache. See <a href="/rails/ActiveSupport/Cache/Store/write">ActiveSupport::Cache::Store#write</a> for an example.
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October 2, 2008
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Setting ttl

Use the expires_in option to set a TTL for the cached item.

Rails.cache.write("top_items", :expires_in => 5.minutes)

You can use this with the fetch method as well:

Rails.cache.fetch("top_items", :expires_in => 5.minutes) do
  # some very expensive calculations

Note: this only works with supporting cache stores, like the MemCacheStore