Interlocked compare exchange for Redis EVAL "<script>" 1 <key> <sequenceId> <keyCount> <key1> <value1> <key2> <value2>

interlockedCompareExchange.lua

local oldSeq; local oldData; 
oldSeq = redis.call('hget',KEYS[1], 'sequence')
oldData = redis.call('hgetall',KEYS[1])
	
if oldSeq and tonumber(oldSeq) >= tonumber(ARGV[1]) then
	return -1
else
	redis.call('hset', KEYS[1], 'sequence', ARGV[1]);
	local maxi = tonumber(ARGV[2])*2 + 3;
	for idx = 3, maxi, 2 do
		redis.call('hset', KEYS[1], ARGV[idx], ARGV[idx+1]);
	end
	return oldData;
end