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Posted to issues@nifi.apache.org by "Brian Ghigiarelli (JIRA)" <ji...@apache.org> on 2018/03/16 22:19:00 UTC

[jira] [Created] (NIFI-4987) Support TTL in Redis

Brian Ghigiarelli created NIFI-4987:
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             Summary: Support TTL in Redis
                 Key: NIFI-4987
                 URL: https://issues.apache.org/jira/browse/NIFI-4987
             Project: Apache NiFi
          Issue Type: Improvement
            Reporter: Brian Ghigiarelli


To properly integrate the NiFi with Redis, it would be nice to support setting TTLs for keys, whether a global TTL is used for the particular Redis database, or a configurable TTL is used for each key. At the moment, the `PutDistributedMapCache` processor that uses the `RedisDistributedMapCacheClientService` and calls to the `RedisConnectionPoolService` does not pass in any TTL / EXPIRE parameter, so Redis will cache the value potentially forever unless Redis itself clears the key based on its configured maxmemory eviction strategy.

On [SO|https://stackoverflow.com/questions/49321005/setting-ttl-on-redis-with-apache-nifi-putdistributedmapcache/49324205#49324205], [~bbende] suggested either a `PutRedis` processor or a modification to the `RedisDistributedMapCacheClientService`.



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