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# This class implements a cache with simple delegation to the Redis store, but
# when it creates a key/value pair, it also sends an EXPIRE command with a TTL.
# It should be fairly simple to do the same thing with Memcached.
class AutoexpireCache
def initialize(store)
@store = store
@ttl = 86400
end
def [](url)
@store.[](url)
end
def []=(url, value)
@store.[]=(url, value)
@store.expire(url, @ttl)
end
def keys
@store.keys
end
def del(url)
@store.del(url)
end
end
Geocoder.configure do |config|
config.cache = AutoexpireCache.new(Redis.new)
end
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