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PERF: optimise serialization for topic tracking state (#20860)
This corrects two issues: 1. We were double serializing topic tracking state (as_json calls were not cached) 2. We were inefficiently serializing items by instantiating extra objects
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@ -653,8 +653,10 @@ class ApplicationController < ActionController::Base
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report = TopicTrackingState.report(current_user)
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serializer = TopicTrackingStateSerializer.new(report, scope: guardian, root: false)
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store_preloaded("topicTrackingStates", MultiJson.dump(serializer.as_json[:data]))
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store_preloaded("topicTrackingStateMeta", MultiJson.dump(serializer.as_json[:meta]))
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hash = serializer.as_json
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store_preloaded("topicTrackingStates", MultiJson.dump(hash[:data]))
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store_preloaded("topicTrackingStateMeta", MultiJson.dump(hash[:meta]))
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end
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def custom_html_json
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