d0uble

6 ms·

1.
Show HN: Sub-Second Analytics with ClickHouse and Apache Kafka at DoubleCloud(double.cloud)
6 points by d0uble 4y ago|0 comments
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by d0uble 5y ago
That sounds like DBA as a Service. No, we don't plan to support that in the near future. One thing that is definitely on our roadmap and may be relevant is BYOA (bring your own account) when hosts of the cluster are running in your AWS
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by d0uble 10y ago
About failed attempt of moving to MySQL. It was more than 10 years ago and I wasn't working at Yandex at that time but AFAIK the main problems were not around technical problems, they were organizational - not all members of the team a
4.
by d0uble 10y ago
We had several kinds of stored logic in Oracle: 1. for logical consistency of data (i.e. when you store new message you should increment counter for folder, thread, etc.). It seems correct to have such logic in the database rather than in t
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by d0uble 10y ago
Hardware for Oracle and PostgreSQL are different. We used to have big boxes for Oracle with lots of memory, SSD disks and rigid economy of CPU (small number of very fast cores because Oracle is licenced per CPU cores). And that hardware was
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by d0uble 10y ago
Please, send us headers for one of such messages to support@mail.yandex.com. You can get them this way https://yandex.com/support/mail/faq.xml#mail-titles .
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by d0uble 10y ago
We started our first production systems with 9.3. When we started migration process and until it ended we used 9.4. Right now all our production clusters are 9.5.
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by d0uble 10y ago
Nobody argues that Oracle is a very good database. But 3x more hardware and 10 man-years are an order of magnitude cheaper than Oracle licencies cost (even with maximum discount).
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by d0uble 10y ago
No, you are not right. In video (Q&A section in the end) you can hear that rewriting stored logic took a couple of weeks of one developer. Maybe a couple of month with good tests. It took much more time to rewrite backends logic because