91 lines
2.6 KiB
Ruby
91 lines
2.6 KiB
Ruby
module Cache
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def incr(key, expiry = 0)
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val = Cache.get(key, expiry)
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Cache.put(key, val.to_i + 1)
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ActiveRecord::Base.logger.debug('MemCache Incr %s' % [key])
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end
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def get_multi(keys, prefix, expiry = 0)
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key_to_sanitized_key_hash = keys.inject({}) do |hash, x|
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hash[x] = "#{prefix}:#{Cache.sanitize(x)}"
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hash
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end
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start_time = Time.now
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sanitized_key_to_value_hash = MEMCACHE.get_multi(key_to_sanitized_key_hash.values)
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elapsed = Time.now - start_time
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returning({}) do |result_hash|
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key_to_sanitized_key_hash.each do |key, sanitized_key|
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if sanitized_key_to_value_hash.has_key?(sanitized_key)
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result_hash[key] = sanitized_key_to_value_hash[sanitized_key]
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else
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result_hash[key] = yield(key)
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Cache.put(sanitized_key, result_hash[key], expiry)
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end
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end
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ActiveRecord::Base.logger.debug('MemCache Multi-Get (%0.6f) %s' % [elapsed, keys.join(",")])
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end
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end
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def get(key, expiry = 0)
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begin
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start_time = Time.now
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value = MEMCACHE.get key
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elapsed = Time.now - start_time
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ActiveRecord::Base.logger.debug('MemCache Get (%0.6f) %s' % [elapsed, key])
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if value.nil? and block_given? then
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value = yield
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MEMCACHE.set key, value, expiry
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end
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value
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rescue MemCache::MemCacheError => err
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ActiveRecord::Base.logger.debug "MemCache Error: #{err.message}"
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if block_given? then
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value = yield
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put key, value, expiry
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end
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value
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end
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end
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def put(key, value, expiry = 0)
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key.gsub!(/\s/, "_")
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key = key[0, 200]
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begin
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start_time = Time.now
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MEMCACHE.set key, value, expiry
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elapsed = Time.now - start_time
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ActiveRecord::Base.logger.debug('MemCache Set (%0.6f) %s' % [elapsed, key])
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value
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rescue MemCache::MemCacheError => err
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ActiveRecord::Base.logger.debug "MemCache Error: #{err.message}"
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nil
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end
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end
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def delete(key, delay = nil)
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begin
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start_time = Time.now
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MEMCACHE.delete key, delay
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elapsed = Time.now - start_time
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ActiveRecord::Base.logger.debug('MemCache Delete (%0.6f) %s' % [elapsed, key])
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nil
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rescue MemCache::MemCacheError => err
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ActiveRecord::Base.logger.debug "MemCache Error: #{err.message}"
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nil
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end
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end
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def sanitize(key)
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key.gsub(/\W/) {|x| "%#{x.ord}"}.slice(0, 240)
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end
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module_function :get
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module_function :get_multi
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module_function :incr
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module_function :put
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module_function :delete
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module_function :sanitize
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end
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