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Another barely useful hack: I put the Go pprof profiler web UI on the public web: https://www.evanjones.ca/pprofweb.html (maybe useful if you don't want to install Go/graphviz/dot, or want to share a profile with someone)
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"XML made us love JSON" - Jeremy Kepner. Sounds about right. He wins mhe Most tweetable quote from North East Database Day 2020. See you next year. About Jeremy: http://mit.edu/~kepner/ About NEDB Day: https://mitdbg.github.io/nedbday/2020/
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Thanks to
@BruceDawson0xB: I just discovered a plagiarized copy of my recent floating-point blog post. Why do people even do this? I assume this is some SEO game? (Original post: https://www.evanjones.ca/floating-point-money.html … )Hvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
Contrary to popular wisdom, you *can* use floating-point numbers for money: https://www.evanjones.ca/floating-point-money.html … (although using a money-specific data type is still probably good advice)
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A barely useful hack: Kube Web Proxy: authenticated, sharable links for internal Kubernetes services for debugging: https://www.evanjones.ca/kubewebproxy.html … Surely there is some better version of this I should know about?
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Tech content I liked in December:
@nelhage on kinds of tests,@frankmcsherry on sorting for better performance, and great debugging stories from@_taylorswope and@theojulienne https://www.evanjones.ca/tech-content-20191226.html …Hvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
North East Database Day: A fun, cheap, small data-related conference at MIT on Jan 27th, with a good mix of academic and industry participants. If you like data you should join! https://mitdbg.github.io/nedbday/2020/ See last year's program: https://mitdbg.github.io/nedbday/2019/#program …
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Google's new E2 machine type finally brings overselling resources to the Cloud. This is a great idea and think we will see more of it: https://www.evanjones.ca/e2-overselling.html …
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I was curious about traffic for my post on unordered indexes: Hacker News drives a LOT of visits (~200k?). That is a "huge" peak of 5 requests/sec, up from a normal of 0.1 requests/sec. If you missed the post: https://www.evanjones.ca/ordered-vs-unordered-indexes.html …pic.twitter.com/cdHcBchNDN
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Why databases use ordered indexes even though hash tables faster for most accesses: Ordered indexes are more versatile, which is more important for large N. http://www.evanjones.ca/ordered-vs-unordered-indexes.html … This is a summary, 1 year late, of an excellent Twitter thread:https://twitter.com/epcjones/status/1040384271624687616 …
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Tech content I liked in the last ~month: queuing theory by
@tacertain, tweets on testing from@hillelogram and@TimSweeneyEpic, measuring the unmeasurable by@Lethain, an amazing microbenchmark by@trav_downs https://www.evanjones.ca/tech-content-20191201.html …Hvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
I gave a talk at Google Cloud Next 2019 about how to break down your cloud cost by additional dimensions, such as by customer and by engineering team. I finally finished a blog post version: https://medium.com/bluecore-engineering/inside-your-cloud-bill-where-is-the-money-going-e10ace58d17 … (That was in April? Where did 2019 go?)
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Tech content I liked recently:
@Lethain on scaling health checking,@_pernosco_'s time-travel debugger demo video,@rcrowley on team composition https://www.evanjones.ca/tech-content-20191030.html … (part of an experiment of me trying to write more often)Hvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
CSV: most easily screwed up file format? So easy to make something that "works" ... Until someone puts a , or " into a field. Always use a real csv writer/reader. Your future self will thank you.
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Auto scaling changes performance bugs from an outage into a cost problem: Progress, but very easy to spend $$$; Thanks
@alexras,@joe_hellerstein,@jonshea for the Twitter convo that inspired me to try and explain in more detail: https://www.evanjones.ca/auto-scaling-outages.html …Hvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
I'm trying to write more. To start: Links to good tech content this week: Reps (you have to practice) by Daniel Na, Deep systems by
@el_bhs, The Tokio scheduler by@carllerche: https://www.evanjones.ca/tech-content-20191024.html …Hvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
Go's garbage collector has tiny pauses, but it is not immune to "GC death spirals", where an overloaded app gets more overloaded.
@dngrmike may have fixed one this week with judicious use of sync.Pool: https://github.com/DataDog/zstd/pull/69 …. Only time will tell if that was the problem ...Hvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
Honoured to receive a limited edition "this database kills fascists"
@CMUDB shirt. Thanks@andy_pavlo! Does this mean I'm supposed to donate or something now?pic.twitter.com/gMWbbXBkBo
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Early in my career: I want to "own" this feature. Recently: how do I avoid "owning" this feature at all costs?
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This is a brilliant essay about what systems research should be. The examples are graphics systems, but it is generally applicable. Highly recommended if you are interested in computer systems research.https://twitter.com/kayvonf/status/1133153733792096261 …
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