method

write

Ruby on Rails latest stable (v7.1.3.2) - 1 note - Class: ActiveSupport::Cache::MemCacheStore

write public

Behaves the same as ActiveSupport::Cache::Store#write, but supports additional options specific to memcached.

raw: true - Sends the value directly to the server as raw bytes. The value must be a string or number. You can use memcached direct operations like increment and decrement only on raw values.
unless_exist: true - Prevents overwriting an existing cache entry.

Show source

# File activesupport/lib/active_support/cache/mem_cache_store.rb, line 165

October 2, 2008

1 thank

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
end

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