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23 lines
451 B
23 lines
451 B
# 基于Redis实现热门搜索关键字
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class HotSearchKeyword
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class << self
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def add(keyword)
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return if keyword.blank?
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Rails.cache.data.zincrby(redis_key, 1, keyword)
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end
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def hot(limit = 5)
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Rails.cache.data.zrevrange(redis_key, 0, limit - 1)
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end
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def available?
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Rails.cache.is_a?(ActiveSupport::Cache::RedisStore)
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end
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private
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def redis_key
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'educoder:es:hot_keyword'
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end
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end
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end |