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In my previous post I wrote about rethinking racing (aka ripping out the existing racing system). Today I got most of the work done on that. There is a lot left to do, but as of right now:
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Once you have set-up a web server like Apache or nginx running on the Raspberry Pi it is time to create a website. From here there a several options: A CMS that relies on a database, some purely manual crafted pages or a static pages generated by a script. I chose the latter for some reasons. Static sites have a lot of advantages: no database to slow requests down offer greater security, as they do not contain dynamic content, so are immun..
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As humans, we pride ourselves of being able to pass information and culture to the future generations. We think, that since we invented written words, the printing press, and the internet, we have invented information. We haven’t. Many other animals successfully transfer information in their communities, over multiple generations. Take the example of a young leopard learning to hunt from his mother. Initially, the hunting skill and informat....
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In recent years it has become more and more common to work in different projects running on different versions of Java. There are still some running on Java 6, and there are tons already running on Java 8.
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Hello! If you are not familiar with Docker , it is the popular open source container engine. Most people use Docker for containing applications to deploy into production or for building their applications in a contained environment. This is all fine & dandy, and saves developers & ops engineers huge headaches, but I like to use Docker in a not-so-typical way. I use Docker to run all the desktop apps on my computers. But why would I....
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Racing in Gastorpoda has been implemented for months in its most basic state, but has never really gotten the attention it needs. So things like jars, in-jar positioning, and movement ended up evolving past the stage of the racing and making the current racing system kind of an outdated one.
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When I joined Red Square in 2013 the office used different pieces of software to keep track of daily tasks.
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At Wingify, we believe in open source and actively seek opportunities to give back to the community. We make use of a lot of open source…
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If you’ve been in the #rust-internals IRC channel recently, you may’ve caught a madman raving about how much they like Rust: 1 2 3 4 5 ... [15:50:03]
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One of the most annoying things I deal with is XML documents with invalid characters inside them. Usually caused by copy pasting from MS Word it ends up with invisible characters that you cannot easily find and cause XML parsers to choke. I have encountered this problem enough that I thought a quick blog post would be worth the effort. As such here mostly for my own reference is a regular expression for C# .NET that will clean invalid XML..
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This is not a tutorial. It's a story. A Voxel Odyssey. The story starts with 19 year old me in a dorm room next to the Ohio State stadium. I don't have the repo from this stage of development (SVN at the time), but I remember the process clearly. Photo by Kristen Sutton XNA 4 comes out in September 2010 . I immediately dive in. This turns out to be a poor life decision.
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I find myself having more conversations with startups – both small and large – about product management. I’ve blogged about some of the tools in my chest here but I haven’t talked much about my “blueprint” for product management, which I find myself laying out in many conversations over coffee. What follows is this process I’ve used a few times over with new teams to get product and engineering moving together, shipping in a predictable m....
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I find myself having more conversations with startups – both small and large – about product management. I’ve blogged about some of the tools in my chest here but I haven’t talked much about my “blueprint” for product management, which I find myself laying out in many conversations over coffee. What follows is this process I’ve used a few times over with new teams to get product and engineering moving together, shipping in a predictable m....
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Python, Ruby concurrency lol packaging lol Golang lol if you don’t like typing err := y u no generics lol imports Haskell need PhD will never be mainstream Idris only for concating lists Erlang lol syntax Javascript javascript Rust how do I do x this week? Clojure let me know when the program has started running lol if you want to build a secure thing on the web Scala lol if you think this actually impro..
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Python, Ruby concurrency lol packaging lol Golang lol if you don’t like typing err := y u no generics lol imports Haskell need PhD will never be mainstream Idris only for concating lists Erlang lol syntax Javascript javascript Rust how do I do x this week? Clojure let me know when the program has started running lol if you want to build a secure thing on the web Scala lol if you think this actually impro..
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In the last year or so, there seems to have been an explosion of markdown editors and markdown previewers. A quick Google search reveals so , many of them . The App Store is also full of these kinds of apps, promising you unrivaled productivity and writing bliss. But, I would submit to you that all of these apps miss the point of markdown. From the markdown project page : The overriding design goal for Markdown’s formatting sy....
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In the last year or so, there seems to have been an explosion of markdown editors and markdown previewers. A quick Google search reveals so , many of them . The App Store is also full of these kinds of apps, promising you unrivaled productivity and writing bliss. But, I would submit to you that all of these apps miss the point of markdown. From the markdown project page : The overriding design goal for Markdown’s formatting sy....
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Snail brain semi-stable and reviewing visual traits set during breeding
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liza.io
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11 years ago
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eng
The snail brain, while still very basic, seems somewhat stable now. By “stable” I mean a snail can survive and reproduce without human intervention if it has a steady supply of food.
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There are two basic problems in information theory that are very easy to explain. Two people, Alice and Bob, want to communicate over a digital channel over some long period of time, and they know the probability that certain messages will be sent ahead of time. For example, English language sentences are more likely than gibberish, and “Hi” is much more likely than “asphyxiation.” The problems are: Say communication is very expensive.
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There are two basic problems in information theory that are very easy to explain. Two people, Alice and Bob, want to communicate over a digital channel over some long period of time, and they know the probability that certain messages will be sent ahead of time. For example, English language sentences are more likely than gibberish, and “Hi” is much more likely than “asphyxiation.” The problems are: Say communication is very expensive.
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There are two basic problems in information theory that are very easy to explain. Two people, Alice and Bob, want to communicate over a digital channel over some long period of time, and they know the probability that certain messages will be sent ahead of time. For example, English language sentences are more likely than gibberish, and “Hi” is much more likely than “asphyxiation.” The problems are: Say communication is very expensive.
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Over the coming month I will be architecting, building and testing a modular, high performance SSD-only storage solution. I’ll be documenting my progress / findings along the way and open sourcing all the information as a public guide. With recent price drops and durability improvements in solid state storage now is better time than any to ditch those old magnets. Modular server manufacturers such as SuperMicro have spent large on R&D..
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Over the coming month I will be architecting, building and testing a modular, high performance SSD-only storage solution. I’ll be documenting my progress / findings along the way and open sourcing all the information as a public guide. With recent price drops and durability improvements in solid state storage now is better time than any to ditch those old magnets. Modular server manufacturers such as SuperMicro have spent large on R&D..
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On Thursday 2015–02–05 I gave a talk as the awesome SFNode Meetup entitled "Background Jobs for NodeJS".
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TL/DR: Regular expressions are fast, until they aren’t. How I got a 20x performance by switching to string functions. With the new version of searchcode.com one of the main things I wanted to address was performance. The previous version had all sorts of performance issues which were not limited to the usual suspects such as the database or search index. When developing the new version one of the tasks listed in my queue was to profile ..
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Further to my earlier post on XenServer storage performance with regards to directly attaching storage from the host, I have been analysing the performance of various SSD storage options. I have attached a HP DS2220sb storage blade to an existing server blade and compared performance with 4 and 6 SSD RAID-10 to our existing iSCSI SANs. While the P420i RAID controller in the DS2220sb is clearly saturated and unable to provide throughput ..
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Search - A Journey of Delivery on a Budget” Presented a Melbourne Search - July 2014 - “Search - A Journey of Delivery on a Budget” (Click for slides)
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The way we work at Infoxchange has changed greatly. A retrospective journey into transforming Infoxchange’s technology and culture over the past 24 months - presented a Melbourne DevOps - December 2014
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At the end of every year I note down a summary of the best applications, hardware & websites I’ve enjoyed & depended on throughout the year (and often for some time before). This post has long since been superseded. You can find the latest version of this post here . Software / General Use Fastmail - https://www.fastmail.com Evernote - https://evernote.com Reeder - http://reederapp.com Keynote - https://www.apple.com/au/mac/ke....
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Intro At Infoxchange we use XenServer as our Virtualisation of choice. There are many reasons for this including: Open Source. Offers greater performance than VMware. Affordability (it’s free unless you purchase support). Proven backend Xen is very reliable. Reliable cross-host migrations of VMs. The XenCentre client, (although having to run in a Windows VM) is quick and simple to use. Upgrades and patches have proven to be more reliable..
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Further to my earlier post on XenServer storage performance with regards to directly attaching storage from the host, I have been analysing the performance of various SSD storage options. I have attached a HP DS2220sb storage blade to an existing server blade and compared performance with 4 and 6 SSD RAID-10 to our existing iSCSI SANs. While the P420i RAID controller in the DS2220sb is clearly saturated and unable to provide throughput ..
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Search - A Journey of Delivery on a Budget” Presented a Melbourne Search - July 2014 - “Search - A Journey of Delivery on a Budget” (Click for slides)
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The way we work at Infoxchange has changed greatly. A retrospective journey into transforming Infoxchange’s technology and culture over the past 24 months - presented a Melbourne DevOps - December 2014
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At the end of every year I note down a summary of the best applications, hardware & websites I’ve enjoyed & depended on throughout the year (and often for some time before). This post has long since been superseded. You can find the latest version of this post here . Software / General Use Fastmail - https://www.fastmail.com Evernote - https://evernote.com Reeder - http://reederapp.com Keynote - https://www.apple.com/au/mac/ke....
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Intro At Infoxchange we use XenServer as our Virtualisation of choice. There are many reasons for this including: Open Source. Offers greater performance than VMware. Affordability (it’s free unless you purchase support). Proven backend Xen is very reliable. Reliable cross-host migrations of VMs. The XenCentre client, (although having to run in a Windows VM) is quick and simple to use. Upgrades and patches have proven to be more reliable..
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DbInspector is a useful library that helps us to view our database in the app. I have forked it and tried to add some small features to make this awesome library more awesome, and even more useful.
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DbInspector is a useful library that helps us to view our database in the app. I have forked it and tried to add some small features to make this awesome library more awesome, and even more useful.
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Patching django sessions to control user sessions
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engineering.hackerearth.com
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11 years ago
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eng
Introduction HackerEarth uses django framework at its heart. We use two third party django packages for the purpose of user authentication and session management: django-allauth : Provides pre-built modules for email-based as well as all popular social authentication mechanisms. django-redis-sessions : Allows storage of user session data in redis (a memory based data store that writes on disk) for fast retrieval. We used MySQL earlier ....
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Rust Sydney had its first event last Monday! The first Rust gathering I know of in Sydney, in Australia, or in the whole southern hemisphere. I had fun meeting all sorts of people interested in Rust: some who’d dived in deep already, some who’d only recently started playing with it, and some who’d been following for a while but had unfortunately not got time to actually use it (hopefully soon!). Thanks to everyone who came and, to ....
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