A cache store implementation which stores everything into memory in the same process. If you‘re running multiple Ruby on Rails server processes (which is the case if you‘re using mongrel_cluster or Phusion Passenger), then this means that your Rails server process instances won‘t be able to share cache data with each other. If your application never performs manual cache item expiry (e.g. when you‘re using generational cache keys), then using MemoryStore is ok. Otherwise, consider carefully whether you should be using this cache store.

MemoryStore is not only able to store strings, but also arbitrary Ruby objects.

MemoryStore is not thread-safe. Use SynchronizedMemoryStore instead if you need thread-safety.

Methods
Public Class methods
new()

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    # File activesupport/lib/active_support/cache/memory_store.rb, line 18
18:       def initialize
19:         @data = {}
20:       end
Public Instance methods
clear()

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    # File activesupport/lib/active_support/cache/memory_store.rb, line 53
53:       def clear
54:         @data.clear
55:       end
delete(name, options = nil)

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    # File activesupport/lib/active_support/cache/memory_store.rb, line 38
38:       def delete(name, options = nil)
39:         super
40:         @data.delete(name)
41:       end
delete_matched(matcher, options = nil)

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    # File activesupport/lib/active_support/cache/memory_store.rb, line 43
43:       def delete_matched(matcher, options = nil)
44:         super
45:         @data.delete_if { |k,v| k =~ matcher }
46:       end
exist?(name, options = nil)

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    # File activesupport/lib/active_support/cache/memory_store.rb, line 48
48:       def exist?(name, options = nil)
49:         super
50:         @data.has_key?(name)
51:       end
read(name, options = nil)

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    # File activesupport/lib/active_support/cache/memory_store.rb, line 28
28:       def read(name, options = nil)
29:         super
30:         @data[name]
31:       end
read_multi(*names)

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    # File activesupport/lib/active_support/cache/memory_store.rb, line 22
22:       def read_multi(*names)
23:         results = {}
24:         names.each { |n| results[n] = read(n) }
25:         results
26:       end
write(name, value, options = nil)

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    # File activesupport/lib/active_support/cache/memory_store.rb, line 33
33:       def write(name, value, options = nil)
34:         super
35:         @data[name] = value.freeze
36:       end