Class: RecordCache::Strategy::IdCache

Inherits:
Base
  • Object
show all
Defined in:
lib/record_cache/strategy/id_cache.rb

Instance Method Summary collapse

Methods inherited from Base

#fetch, #initialize

Constructor Details

This class inherits a constructor from RecordCache::Strategy::Base

Instance Method Details

#cacheable?(query) ⇒ Boolean

Can the cache retrieve the records based on this query?

Returns:

  • (Boolean) 


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# File 'lib/record_cache/strategy/id_cache.rb', line 6

def cacheable?(query)
  ids = query.where_ids(:id)
  ids && (query.limit.nil? || (query.limit == 1 && ids.size == 1))
end

#invalidate(id) ⇒ Object

Handle invalidation call



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# File 'lib/record_cache/strategy/id_cache.rb', line 24

def invalidate(id)
  version_store.delete(cache_key(id))
end

#record_change(record, action) ⇒ Object

Update the version store and the record store



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# File 'lib/record_cache/strategy/id_cache.rb', line 12

def record_change(record, action)
  key = cache_key(record.id)
  if action == :destroy
    version_store.delete(key)
  else
    # update the version store and add the record to the cache
    new_version = version_store.increment(key)
    record_store.write(versioned_key(key, new_version), Util.serialize(record))
  end
end