Salvatore Sanfilippo talks Redis design and internals

thechangelog.com

54 points·netherland··11 comments

Do you know the feeling of your registered voice sounding crap? Add to this your English skills sounding even worse ;)

Well talking with @pengwynn was great and I hope that English skills apart you will find the interview interesting. If I said stupid things, I'm here to reply to any question (more probably tomorrow morning as it's late here in Italy)!

Your English is perfectly understandable. Don't worry about it. ;-)

It does make me wonder about current audio language translators. I wonder how much progress people have made with those.

Agreed. Better than mine.

Too nice ;) Thanks everybody.

I understood you just fine. Good job!

Loved the interview, very interesting, perfectly clear. Helped me a lot to understand the internals. Specially interested about the replication explanation. Great work, Salvatore!

How can I scale redis Pub/Sub system when I need more messages/second?

Pub/Sub is receiver-intensive, not publish-intensive, so basically if you have many subscribers the best thing you can do is to setup a few slaves.

PUBLISH commands are propagated on slaves. So you can attach your subscribers in a random slave.

Another approach is, if you don't have any pattern matching subscriber, to shard based on the hash of the key.

cool :) great to hear some of your thoughts man!

listening and tweaking my notes for the redis workshop which is due friday :)

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