redis_hash_serialization.rb

def encode_hash(hash)
  hash.map { |k,v| [k, encode(v)] }
end

def decode_hash(hash)
  Hash[hash.map { |k,v| [k, decode(v)] }]
end

def hgetall(key)
  decode_hash redis.hgetall(key)
end

def hmset(key, hash)
  redis.hmset key, *encode_hash(hash).flatten
end