35 lines
897 B
Ruby
35 lines
897 B
Ruby
class HomeworkCommonCache
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class<<self
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#-----------------------------作业
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def homework_common_cache(id)
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key = "homework_common:"+id.to_s
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data = Rails.cache.read(key) rescue nil
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if data.nil?
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#直接存数据库对象
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data = HomeworkCommon.find(id) rescue nil
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if data
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Rails.cache.write(key,data,{ expires_in: 90.minutes }) rescue Rails.cache.delete(key)
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end
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end
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data
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end
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#更新
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def update_homework_common_cache(id,homework_common)
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key = "homework_common:"+id.to_s
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data = Rails.cache.read(key)
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if data.nil?
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else
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Rails.cache.write(key,homework_common,{ expires_in: 90.minutes }) rescue Rails.cache.delete(key)
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end
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end
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#删除
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def delete_homework_common_cache(id)
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key = "homework_common:"+id.to_s
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Rails.cache.delete(key)
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end
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end
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end |