Use LUA scripts in spring boot

Writing LUA Scripts

This script function: first check whether the value of a key in Redis is consistent with the expected value V1, if it is consistent, modify it to a new value V2 and return True, otherwise false. Actually, it's CAs.

Local current = Redis.call ('GET', keys[1])if current = = argv[ 1 ] Then  redis.call ('SET', keys[1], argv[2])   return true End return false

Note that the variables in the Lua script are local and cannot be global variables. Otherwise you will get an error. See HTTP://DOC.REDISFANS.COM/SCRIPT/EVAL.HTML#ID6

Loading LUA scripts with Defaultredisscript

@Bean      Public Defaultredisscript<boolean> Redisscript () {        defaultredisscriptnew Defaultredisscript <>();        Redisscript.setscriptsource (New Resourcescriptsource (new Classpathresource (" Lua/checkandset.lua " )));        Redisscript.setresulttype (Boolean. class );         return redisscript;    }

Test

@Autowired Defaultredisscript<Boolean>Redisscript; /** * Test redis LUA * * @return*/@RequestMapping (Value="Testredislua", method ={requestmethod.get}) @ResponseBody PublicObject Testredislua () {String key="Testredislua";        Redistemplate.delete (key); Redistemplate.opsforvalue ().Set(Key,"hahaha"); String s= Redistemplate.opsforvalue ().Get(key);        Log.info (s); Redistemplate.execute (Redisscript, Collections.singletonlist (key),"hahaha","3333"); S= Redistemplate.opsforvalue ().Get(key);        Log.info (s); return NULL; }

Use LUA scripts in spring boot