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I've been dealing with SQL and CQL for so long, that I know instinctively read the names of the io_uring data structures as "structured completion entry" and "cassandra completion entry".
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Getting started with io_uring for sockets for seastar. Good that I am doing this per-merge of the storage bits, because some design decisions will have to change to accommodate both more elegantly. Soon seastar will need only one system call
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impeach cmake!
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I lost (am losing) so much time with cmake these past days, it's not even funny
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Wondering how are the early results for the io_uring backend for seastar? 50% faster in the first benchmark (workload is small 512-byte reads with iodepth of one, competing for dispatch time against a CPU-bound constant workload)
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Discord is migrating from Cassandra to Scylla. It caused them high latencies because they had to read more from their current Cassandra cluster to siphon the data. Easily solved by slowing down. But wait until you see how low those latencies will be once the migration finishes!https://twitter.com/AviKivity/status/1222501952669569024 …
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Initial implementation of io_uring for seastar posted. Need to do more testing, polish some details, and find some annoying bugs. But looking good!
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BTW,
@axboe , liburing does not seem to have any test using non-vectored writes, and when I try to use it, it crashes with a coredump. The last lines of the backtrace are io_write() -> io_setup_async_rw(), and the faulty addr is 0x0000000000000088Show this threadThanks. Twitter will use this to make your timeline better. UndoUndo -
Scylla 3.2 is a great release, finally bringing LWT-style transactions to Scylla and bridging the last big gap between Scylla and Cassandra. We're also going above and beyond with a table-based CDC implementationhttps://twitter.com/ScyllaDB/status/1219663318392233984 …
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Stopping now for some time off to clear my mind. Eager to come back in January!
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Glauber Costa Retweeted
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@infoworld Editor's Choice! On Scylla: "It’s the rare product that exceeds my expectations."#NoSQL superchargedhttp://ow.ly/lC2k50xDvaXThanks. Twitter will use this to make your timeline better. UndoUndo -
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With availability of hardware like EC2 M6g instances and startups like Nuvia, I do consider that this is a game-changing for Arm servers
@jonmasters@ScyllaDB#AWShttps://twitter.com/_msw_/status/1202647947495661568 …Thanks. Twitter will use this to make your timeline better. UndoUndo -
The concepts in this article are valid for pretty much every database, although are things we see a lot our users struggling with. How to determine the best number of connections and threads to use for your clients? Should I retry requests that timed out? Answers below!https://twitter.com/ScyllaDB/status/1197193800277544960 …
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If you missed the Scylla Summit, this is a summary of what happened there. It was a great conference, and we announced great things for the times aheadhttps://twitter.com/ScyllaDB/status/1196493811943383041 …
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Glauber Costa Retweeted
San Francisco has a number of very fit, technically-brilliant billionaires. It has a crime and safety problem, and it elects politicians that exacerbate this problem. If any place was going to create Batman, it's San Francisco.
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Glauber Costa Retweeted
On November 12, please join us at Python Meetup to hear our very own Bruno Brodarić and Marija Zelić and learn on "Big Data ETL using Python, Kafka and ScyllaDB". More info: https://hubs.ly/H0lJfPd0 pic.twitter.com/YQJ2oYLrP8
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Glauber Costa Retweeted
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@packethost and ScyllaDB combined the fastest baremetal instances with the fastest#NoSQL database to scale a cluster capable of reading 1,000,000,000 rows per second! http://ow.ly/EqiS50x55XB pic.twitter.com/0aJrmbxpj3
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That is right: we + packet just demonstrated Scylla reading 1 BILLION ROWS per second at just 83 nodes.https://twitter.com/packethost/status/1192532961050218498 …
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