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From Navneeth Krishnan <reachnavnee...@gmail.com>
Subject Re: Kafka Streams Optimizations
Date Mon, 14 Dec 2020 19:07:10 GMT
Hi All,

Any advice would really help.


On Sun, Dec 6, 2020 at 10:32 PM Navneeth Krishnan <reachnavneeth2@gmail.com>

> Hi All,
> I have been working on moving an application to kafka streams and I have
> the following questions.
> 1. We were planning to use an EFS mount to share rocksdb data for KV store
> and global state store with which we were hoping to minimize the state
> restore time when new instances are brought up. But later we found that
> global state stores require a lock so directories cannot be shared. Is
> there some way around this? How is everyone minimizing the state
> restoration time?
> 2. Topology optimization: We are using PAPI and as per the docs topology
> optimization will have no effects on low level api. Is my understanding
> correct?
> 3. There are about 5 KV stores in our stream application and for a few the
> data size is a bit larger. Is there a config to write data to the changelog
> topic only once a minute or something? I know it will be a problem in
> maintaining the data integrity. Basically we want to reduce the amount of
> changelog data written since we will have some updates for each user every
> 5 secs or so. Any suggestions on optimizations.
> 4. Compress data: Is there an option to compress the data being sent and
> consumed from kafka only for the intermediate topics. The major reason is
> we don't want to change the final sink because it's used by many
> applications. If we can just compress and write the data only for the
> intermediate topics and changelog that would be nice.
> Thanks and appreciate all the help.
> Regards,
> Navneeth

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