--[[luarocks install luasocket         module 'socket' not foundhttps://github.com/nrk/redis-lua最历害的是，用redis 去跑lua，分布式锁，限流，]]--local redis = require("redis");local config={host="127.0.0.1",port=6379};
local client = redis.connect(config);--项目中使用的原子操作
https://blog.csdn.net/kuishao1314aa/article/details/120367618
--eval "local val=redis.call('GET',KEYS[1]);if _G.tonumber(val)>0 then redis.call('DECR',KEYS[1]) end;return true" 1 test-keylocal val=client.get('test-key');--1
if _G.tonumber(val) <1 thenprint("没有库存，抢完了");os.exit();
elseclient.decr('test-key');
end--[[
info = client:info();for k,v in pairs(info.clients) doprint(k,v);end]]--print(client:get("test-key"));
--print(cliREADMEent:del("test-key"));--print(client:set("test-key",456));print(client:incr("test-key"));print(client:get("test-key"));for k,v in pairs(redis.commands) doprint(k,v);
end