CODEWITHSUNDEEP
redis
edlerd
edlerd

Reputation: 2145

Does Redis Clean expired keys on save or bgsave?

On redis.io it is said, that expired keys are not deleted immediately but on access or every once in a while randomly some are deleted.

Does redis remove all expired keys on a save or bgsave? Or does it write the old keys to disk?

Upvotes: 1

Views: 1137

Answers (1)

pfreixes
pfreixes

Reputation: 449

You can read rdb.c source code and you will see that expired keys will not be save

        /* Save the expire time */
        if (expiretime != -1) {
            /* If this key is already expired skip it */
            if (expiretime < now) continue;

Upvotes: 9

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