Redis string-type API uses

Tag: SIM indicates flush--gets SWA port starts SETNX

 Packagecom.daxin.jedis_datastructure;ImportOrg.junit.After;ImportOrg.junit.Before;Importorg.junit.Test;ImportRedis.clients.jedis.Jedis;/*** Unit test for simple App.*/ Public classapptest {Jedis Jedis=NULL; @Before Public voidbefore () {Jedis=Redisutils.getjedis (); Jedis.flushdb ();} @After Public voidAfter () {jedis.close ();}/*** Simple Key/value settings*/@Test Public voidJedis_set_get () {//Set KeyJedis.set ("Redis_key", "Redis_value"); System.out.println (Jedis.get ("Redis_key"));//append to the specified key afterJedis.append ("Redis_key", "_redis_value"); System.out.println (Jedis.get ("Redis_key"));//The parameters are not explained//NX is set if it does not exist, otherwise it is not set. XX Set if present//ex represents seconds. PX represents milliseconds//The last parameter indicates how long the time expiresJedis.set ("Redis_key", "123456789", "XX", "EX", 500L); System.out.println (Jedis.get ("Redis_key")); Jedis.set ("123456789", "123456789", "NX", "EX", 500L); System.out.println (Jedis.get ("123456789"));}/*** There is no int type in Redis, a string is stored inside, and a string is transferred to int and then to string storage when int is added and minus .*/@Test Public voidJedis_incr_incrby () {System.out.println ("------------incrBy10------------");//Add tenLong r1 = Jedis.incrby ("Top", 10);//there is no int type in Redis, a string is stored in it, and a string is transferred to int and then to string storage when int is added and minus .System.out.println (R1); System.out.println ("------------incr------------");//plus 1R1 = JEDIS.INCR ("Top"); SYSTEM.OUT.PRINTLN (R1); System.out.println ("------------incrBy2------------"); R1= Jedis.incrby ("Top", 2); SYSTEM.OUT.PRINTLN (r1);} @Test Public voidJedis_decr_decrby () {Long R1= Jedis.incrby ("Top", 10); SYSTEM.OUT.PRINTLN (R1);//minus 1 OperationR1 = JEDIS.DECR ("Top"); SYSTEM.OUT.PRINTLN (R1);//minus 4 OperationsR1 = Jedis.decrby ("Top", 4); SYSTEM.OUT.PRINTLN (r1);} @Test Public voidJedis_getset () {/*** First get in Settings*/String R1= Jedis.getset ("Daxin", "first"); SYSTEM.OUT.PRINTLN (R1); R1= Jedis.getset ("Daxin", "first"); SYSTEM.OUT.PRINTLN (r1);} @Test Public voidJedis_setex ()throwsException {String R1= Jedis.setex ("Loginstate", 5, "yes"); SYSTEM.OUT.PRINTLN (R1);//return to OKSystem.out.println (Jedis.get ("Loginstate")); Thread.Sleep (6000);//SleepingSystem.out.println (Jedis.get ("loginstate"));//Expired}/*** The value of key is set only when key does not exist. * @throwsException*/@Test Public voidJedis_setnx ()throwsException {//The value of key is set only if key does not exist. Long r1 = jedis.setnx ("Top", "1");//return value 1 setting ook, 0 failure settingSystem.out.println (R1); R1=jedis.setnx ("Top", "2");//0 Failure SettingsSystem.out.println (r1);} @Test Public voidJedis_mget () {//set multiple key/value at once, must appear in pairsString r1 = Jedis.mset ("Daxin", "First", "La", "Laji"); SYSTEM.OUT.PRINTLN (R1); System.out.println (Jedis.get ("Daxin")); System.out.println (Jedis.get ("La"));}/*** Use the value parameter to write to the string value stored by the key, starting with offset offsets. */@Test Public voidJedis_range () {Jedis.set ("Top", "Top-k"); Jedis.setrange ("Top", 2, "*");//here is the overlay, not the insertSystem.out.println (Jedis.get ("Top"));}/*** Returns the length of the string value stored by key. */@Test Public voidJedis_strlen () {Jedis.set ("Top", "Top-k"); System.out.println (Jedis.strlen ("Top"));}/*** Set one or more key-value pairs at the same time, when and only if all given key does not exist. */@Test Public voidjedis_msetnx () {Jedis.set ("Top", "Top-k");//Note: All keys do not exist before they can be inserted, otherwise they are all not insertedJedis.msetnx ("Top", "Toptop", "111", "1111"); System.out.println (Jedis.get ("Top")); System.out.println (Jedis.get ("111"));}/*** This command is similar to the Setex command, but it sets the lifetime of the key in milliseconds, rather than the Setex command, in seconds. * @throwsException*/@SuppressWarnings ("Deprecation") @Test Public voidJedis_psetex ()throwsException {Jedis.psetex ("Top", 1000*60, "one Minute Lapse"); System.out.println (Jedis.get ("Top")); Thread.Sleep (1000*60); System.out.println (Jedis.get ("Top"));}}

Redis string-type API uses