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
middleware()
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Middleware
class can be inserted as a Rack handler to be local cache for the duration of request.
# File lib/active_support/cache/strategy/local_cache.rb, line 92 def middleware @middleware ||= Middleware.new( "ActiveSupport::Cache::Strategy::LocalCache", local_cache_key) end
with_local_cache() { || ... }
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Use a local cache for the duration of block.
# File lib/active_support/cache/strategy/local_cache.rb, line 86 def with_local_cache use_temporary_local_cache(LocalStore.new) { yield } end
Private Instance Methods
bypass_local_cache() { || ... }
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# File lib/active_support/cache/strategy/local_cache.rb, line 193 def bypass_local_cache use_temporary_local_cache(nil) { yield } end
delete_entry(key, **options)
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Calls superclass method
# File lib/active_support/cache/strategy/local_cache.rb, line 168 def delete_entry(key, **options) local_cache.delete_entry(key, **options) if local_cache super end
local_cache()
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# File lib/active_support/cache/strategy/local_cache.rb, line 189 def local_cache LocalCacheRegistry.cache_for(local_cache_key) end
local_cache_key()
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# File lib/active_support/cache/strategy/local_cache.rb, line 185 def local_cache_key @local_cache_key ||= "#{self.class.name.underscore}_local_cache_#{object_id}".gsub(/[\/-]/, "_").to_sym end
read_entry(key, **options)
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Calls superclass method
# File lib/active_support/cache/strategy/local_cache.rb, line 131 def read_entry(key, **options) if cache = local_cache hit = true value = cache.fetch_entry(key) do hit = false super end options[:event][:store] = cache.class.name if hit && options[:event] value else super end end
read_multi_entries(keys, **options)
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Calls superclass method
# File lib/active_support/cache/strategy/local_cache.rb, line 145 def read_multi_entries(keys, **options) return super unless local_cache local_entries = local_cache.read_multi_entries(keys, **options) missed_keys = keys - local_entries.keys if missed_keys.any? local_entries.merge!(super(missed_keys, **options)) else local_entries end end
use_temporary_local_cache(temporary_cache) { || ... }
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# File lib/active_support/cache/strategy/local_cache.rb, line 197 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
write_cache_value(name, value, **options)
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# File lib/active_support/cache/strategy/local_cache.rb, line 173 def write_cache_value(name, value, **options) name = normalize_key(name, options) cache = local_cache cache.mute do if value cache.write(name, value, options) else cache.delete(name, **options) end end end
write_entry(key, entry, **options)
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Calls superclass method
# File lib/active_support/cache/strategy/local_cache.rb, line 158 def write_entry(key, entry, **options) if options[:unless_exist] local_cache.delete_entry(key, **options) if local_cache else local_cache.write_entry(key, entry, **options) if local_cache end super end