Spring-redis SortedSet type member Expiration time processing

Redis defaults to only support the expiration of simple keys, such as the SortedSet type, but also for the entire set of expired processing, does not support the expiration of a member of set;

In order to solve this problem, the following are done:

1. Store key and value information to Redis and put key in set to set key expiration time;

This key can support expiration processing and remove key and value after expiration, but the key in set still exists;

A, in the processing that needs to determine the expiration of the key, such as the Boolean ContainsKey (Object key), first in the set set to get the corresponding key;

The TTL can be used to determine whether it exists, if no description has expired, remove the key from set;

b, scheduled tasks, some conditions, can expire after also will not be used, so the need to regularly clean key,checkexpire ();

2. The code is as follows

 Public BooleanContainsKey (Object key) {Final byte[] Keybytes =Computekey (key); return(Boolean) Template.execute (NewRediscallback<boolean>() {         PublicBoolean Doinredis (redisconnection connection)throwsDataAccessException {waitforlock (connection); Set<byte[]> Keys =connection.zrange (setname,0,-1); Booleanisexist=false;  for(byte[] item:keys) {                if(Arrays.equals (Keybytes,item)) {Long remain=Connection.ttl (item); if(remain==-2) {Connection.zrem (SetName, item);//Remove from set;}Else{isexist=true; }                     Break; }            }            returnisexist; }    }, true);} Public voidCheckexpire () {Template.execute (NewRediscallback<object>() {         PublicObject Doinredis (redisconnection connection)throwsDataAccessException {waitforlock (connection); //Connection.multi ();Set<byte[]> Keys =connection.zrange (setname,0,-1);  for(byte[] item:keys) {Long remain=Connection.ttl (item); if(remain==-2){                    //Connection.del (item); //remove key from setConnection.zrem (SetName, item); }            }            //connection.exec ();            return NULL; }    }, true);}

Spring-redis SortedSet type member Expiration time processing