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Demystifying the Ruby GC

https://samsaffron.com/archive/2013/11/22/demystifying-the-ruby-gc

Programming, Technology and the Art of Hacking. Demystifying the Ruby GC. Almost 3 years ago. This article is about the Ruby GC. In particular it is about the GC present in Ruby MRI 2.0. The Ruby GC has been through quite a few iterations, in 1.9.3 we were introduced to the lazy sweeping algorithm and in 2.0 we were introduced bitmap marking. Ruby 2.1 is going to introduce many more concepts and is out-of-scope for this post. To get a handle of this, GC algorithms and MRI in general. A typical Rails appl...

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Vintage JavaScript begone

https://samsaffron.com/archive/2014/01/15/vintage-javascript-begone

Programming, Technology and the Art of Hacking. Over 2 years ago. These days all the cool kids are using Ember.JS or Angular or Meteor or some other single page web application. If you deploy often, like we do at Discourse. You have a problem. How can you get everyone to run the latest version of your JavaScript and CSS bundle? One BIG criticism I have heard of Rails and Django. Lately is the lack of "realtime" support. This is an issue we foresaw over a year ago at Discourse. Behind this trivial API hid...

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Do you smoke test?

https://samsaffron.com/archive/2013/02/22/do-you-smoke-test

Programming, Technology and the Art of Hacking. Do you smoke test? Over 3 years ago. Not in the "its just a little bit broken sense". Instead, in the absolutely everything is broken and every page returns a 500 error code, sense. We already do so much to ensure Discourse always works, in true Eric Ries. Lean startup, Rails best practice way. That exercise a huge portion of the Ruby code. We have 80 or so tests the test some of the JavaScript (we need more, lots more). Asset path "my asset" %. That is not...

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MiniProfiler Ruby Edition

https://samsaffron.com/archive/2012/07/12/miniprofiler-ruby-edition

Programming, Technology and the Art of Hacking. About 4 years ago. About a year ago we released a MiniProfiler for .Net. Ever since, I have been wishing for a Ruby port. It seems I was not alone as this Stack Overflow question. I am very happy to now announce our first release of MiniProfiler for Ruby. This has been made possible thanks to a large amount of effort by Aleks Totic. And myself. It reuses the UI created by Jarrod Dixon. Why do you care, what does it do? MiniProfiler will display timings for.

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Insert or Update pattern for Sql Server

https://samsaffron.com/blog/archive/2007/04/04/14.aspx

Programming, Technology and the Art of Hacking. Insert or Update pattern for Sql Server. Over 9 years ago. SQL Server 2008 users, you now have a built-in MERGE. Statement you can use instead of these patterns. A very common problem that is surprisingly difficult to solve properly with SQL is the UPDATE or INSERT problem (sometimes called upsert). I would like to insert a row in to the table if the key does not exist and update a row if a key exists. So, for the table:. Lets explore the second option.

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Live restarts of a supervised unicorn process

https://samsaffron.com/archive/2013/11/13/live-restarts-of-a-supervised-unicorn-process

Programming, Technology and the Art of Hacking. Live restarts of a supervised unicorn process. Almost 3 years ago. We have all seen this dreaded screen before. In the Rails case this usually happens during application restarts. Unicorn has built-in support for live restarts. However getting this to play well with a supervisor like say runit. Is not easy. Underlying pids are changing and stuff gets complicated fast. However, before any of this I needed some sane way of measuring how well I did. S"}" puts ...

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MiniProfiler 2.0, almost out of the gate

https://samsaffron.com/archive/2012/02/22/miniprofiler-2-0-almost-out-of-the-gate

Programming, Technology and the Art of Hacking. MiniProfiler 2.0, almost out of the gate. Over 4 years ago. Nine months ago I blogged. Open source project. I used some hyperbole in the announcement blog. I goaded others to port MiniProfiler to their favourite web stack and accused us of living in the "stone age" of web profiling. Exaggeration aside, awesome. Is infectious. PHP now has a port of MiniProfiler. Python has a port of MiniProfiler. What problem is Mini Profiler Solving? In 1968 Robert Miller.

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Commenting powered by Discourse

https://samsaffron.com/archive/2013/12/04/commenting-powered-by-discourse

Programming, Technology and the Art of Hacking. Commenting powered by Discourse. Over 2 years ago. Leaving comments on this blog requires a certain amount of commitment. You have to jump to another site to log in. 765x428 30.5 KB. Compare this to the "least amount of friction possible". A lot of work. When I made the move to Discourse. I thought of this. A couple of months in, I am not so sure. When I think about comments on my blog these are my priorities. Comments / emails / content is unconditionally.

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Announcing rubybench.org

https://samsaffron.com/archive/2015/01/08/announcing-rubybench-org

Programming, Technology and the Art of Hacking. Over 1 year ago. A year ago I put out a call to action for long running benchmarks. I got a great response and lots of people lended a hand trying to get a system built. The project itself was quite slow moving, we had some working bits, but nothing really complete to show. A few months ago Alan Guo Xiang Tan. Contacted me about the project. In the past few months Alan has been working tirelessly on the project. 1074x479 24.6 KB. Will it be faster? And make...

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Stop paying your jQuery tax

https://samsaffron.com/archive/2012/02/17/stop-paying-your-jquery-tax

Programming, Technology and the Art of Hacking. Stop paying your jQuery tax. Over 4 years ago. Reminder, script tags block rendering. It is common advice to move all your external JavaScript includes to the footer. Recently, the movement for fancy JavaScript loaders like ControlJS. And so on has also picked up steam. The reason for this advice is sound and pretty simple. Nothing, Nada, Zilch below non asynchronous. In Opera. There are quite a few. Often people avoid the. WowThisIsSoEasy); / aka. $(do...