module ActiveSupport::Cache::Strategy::LocalCache
Caches that implement LocalCache
will be backed by an in-memory cache for the duration of a block. Repeated calls to the cache for the same key will hit the in-memory cache for faster access.
Public Instance Methods
Source
# File lib/active_support/cache/strategy/local_cache.rb, line 69 def middleware @middleware ||= Middleware.new( "ActiveSupport::Cache::Strategy::LocalCache", local_cache_key) end
Middleware
class can be inserted as a Rack handler to be local cache for the duration of request.
Source
# File lib/active_support/cache/strategy/local_cache.rb, line 63 def with_local_cache(&block) use_temporary_local_cache(LocalStore.new, &block) end
Use a local cache for the duration of block.
Private Instance Methods
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# File lib/active_support/cache/strategy/local_cache.rb, line 170 def bypass_local_cache(&block) use_temporary_local_cache(nil, &block) end
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# File lib/active_support/cache/strategy/local_cache.rb, line 147 def delete_entry(key, **) local_cache.delete_entry(key) if local_cache super end
Calls superclass method
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# File lib/active_support/cache/strategy/local_cache.rb, line 166 def local_cache LocalCacheRegistry.cache_for(local_cache_key) end
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# File lib/active_support/cache/strategy/local_cache.rb, line 162 def local_cache_key @local_cache_key ||= "#{self.class.name.underscore}_local_cache_#{object_id}".gsub(/[\/-]/, "_").to_sym end
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# File lib/active_support/cache/strategy/local_cache.rb, line 122 def read_multi_entries(keys, **options) return super unless local_cache local_entries = local_cache.read_multi_entries(keys) local_entries.transform_values! do |payload| deserialize_entry(payload)&.value end missed_keys = keys - local_entries.keys if missed_keys.any? local_entries.merge!(super(missed_keys, **options)) else local_entries end end
Calls superclass method
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# File lib/active_support/cache/strategy/local_cache.rb, line 108 def read_serialized_entry(key, raw: false, **options) if cache = local_cache hit = true entry = cache.fetch_entry(key) do hit = false super end options[:event][:store] = cache.class.name if hit && options[:event] entry else super end end
Calls superclass method
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# File lib/active_support/cache/strategy/local_cache.rb, line 174 def use_temporary_local_cache(temporary_cache) save_cache = LocalCacheRegistry.cache_for(local_cache_key) begin LocalCacheRegistry.set_cache_for(local_cache_key, temporary_cache) yield ensure LocalCacheRegistry.set_cache_for(local_cache_key, save_cache) end end
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# File lib/active_support/cache/strategy/local_cache.rb, line 152 def write_cache_value(name, value, **options) name = normalize_key(name, options) cache = local_cache if value cache.write_entry(name, serialize_entry(new_entry(value, **options), **options)) else cache.delete_entry(name) end end
Source
# File lib/active_support/cache/strategy/local_cache.rb, line 138 def write_serialized_entry(key, payload, **) if return_value = super local_cache.write_entry(key, payload) if local_cache else local_cache.delete_entry(key) if local_cache end return_value end
Calls superclass method