method

decrement

v6.0.0 - Show latest stable - 0 notes - Class: RedisCacheStore

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What's this?

decrement(name, amount = 1, options = nil) public

Decrement a cached value. This method uses the Redis decr atomic operator and can only be used on values written with the :raw option. Calling it on a value not stored with :raw will initialize that value to zero.

Failsafe: Raises errors.

Show source

# File activesupport/lib/active_support/cache/redis_cache_store.rb, line 288
      def decrement(name, amount = 1, options = nil)
        instrument :decrement, name, amount: amount do
          failsafe :decrement do
            options = merged_options(options)
            key = normalize_key(name, options)

            redis.with do |c|
              c.decrby(key, amount).tap do
                write_key_expiry(c, key, options)
              end
            end
          end
        end
      end

decrement

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