CODEWITHSUNDEEP
javarediskey-valuejedis
Kunwar Pratap Rathore
Kunwar Pratap Rathore

Reputation: 1

Can you expire a key value pair for a hashKey in Redis

I want to expire a particular key/value pair set in a hashKey in redis. But redis expires the whole hashKey with all keyValue pairs inside lost. For example i just want to remove Key:666 from seqNu. Using jedis.setex is other option but u cant set a hashKey in it. 

jedis.hset("seqNu","666",System.currentTimeMillis()+"");
jedis.hset("seqNu","777",System.currentTimeMillis()+"");
jedis.expire("seqNu", 20); // This expires the whole HashKey: seqNu after 20 seconds

Upvotes: 0

Views: 7651

Answers (1)

Itamar Haber
Itamar Haber

Reputation: 49942

Redis only expires "whole" keys, not individual elements inside its data structures (i.e.g. a Hash's field or a Set's member). Consider splitting your Hash into multiple string keys (each expirable by itself) or using Sorted Sets as explained here: Redis: To set timeout for a key value pair in Set

Upvotes: 4

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