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cache nil replies from backend cache so misses are fast too

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This commit is contained in:
Michael Grosser 2015-11-05 17:43:22 -08:00
parent 07b2ff03d0
commit b9fb0f2623
2 changed files with 14 additions and 3 deletions
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9
activesupport/lib/active_support/cache/strategy/local_cache.rb vendored
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@ -48,6 +48,10 @@ module ActiveSupport
@data.clear
end
def fetch(*args, &block)
@data.fetch(*args, &block)
end
def read_entry(key, options)
@data[key]
end
@ -99,12 +103,11 @@ module ActiveSupport
protected
def read_entry(key, options) # :nodoc:
if local_cache
entry = local_cache.read_entry(key, options)
unless entry
local_cache.fetch(key) do
entry = super
local_cache.write_entry(key, entry, options)
entry
end
entry
else
super
end

8
activesupport/test/caching_test.rb
View file

@ -597,6 +597,14 @@ module LocalCacheBehavior
end
end
def test_local_cache_of_read_nil
@cache.with_local_cache do
assert_equal nil, @cache.read('foo')
@cache.send(:bypass_local_cache) { @cache.write 'foo', 'bar' }
assert_equal nil, @cache.read('foo')
end
end
def test_local_cache_of_write_nil
@cache.with_local_cache do
assert @cache.write('foo', nil)