https://largedatabank.com/ Recent content in About Me on LARGE DATA BANK Hugo -- gohugo.io en-us Mon, 02 Jan 2012 02:04:00 -0400 https://largedatabank.com/posts/desk-setup-2022/ Mon, 23 May 2022 11:57:33 -0500 https://largedatabank.com/posts/desk-setup-2022/ I wrote about my home office setup soon after COVID rendered many of us work from home hostages. It’s a popular post, and one that I’ve enjoyed sharing frequently to friends, coworkers, and Twitch denizens who are interested in enhancing their own home setups or curious about how I achieve high quality video and audio in remote meetings. Since then, however, I’ve made a ton of further changes and enhancements to enhance my coding livestream and improve my ergonomics and health, so the original post is now barely accurate. https://largedatabank.com/posts/twitch-live-coding/ Tue, 14 Jul 2020 11:37:24 -0400 https://largedatabank.com/posts/twitch-live-coding/ If you’re reading this post, you might be interested in trying your hand at live coding on stream, as a way of sharing your projects in a more relatable, immediate way than a polished blog post, teaching others about programming, or just as a way to have fun. I think that live coding and streams in general are an interesting possible future form of both education and entertainment, and if you’re contemplating starting your own stream, I sincerely hope that you do it. https://largedatabank.com/posts/desk-setup-2020/ Sun, 24 May 2020 13:34:49 -0400 https://largedatabank.com/posts/desk-setup-2020/ My home office desk setup has changed a lot since I started working from home full-time due to COVID-19. This post explains what goes into the setup that I’ve got, along with ample photographs. The transition to full remote both left me with more time on my hands and inspired me to tidy up and optimize my setup for comfort and improved AV. I’ve also started streaming programming on Twitch, which has added a few requirements. https://largedatabank.com/posts/we-back/ Mon, 11 May 2020 01:01:18 -0400 https://largedatabank.com/posts/we-back/ In a tradition that’s as old as time itself, I’m writing this blog post to commemorate moving my blog to a new blogging framework, Hugo. When I started this blog in 2012, the hotness was Octopress. Now the hotness is Hugo. So, I’ve converted my old posts to Hugo and refreshed the theme a little bit. Hopefully this won’t become the last new post, but you never know. https://largedatabank.com/posts/exploring-column-families/ Fri, 01 May 2020 10:00:00 -0400 https://largedatabank.com/posts/exploring-column-families/ In this video, I break down what Column Families are in CockroachDB, why you’d want to use them, and how you can explore them in more detail for yourself. Column families are a concept that allows you to change how rows are stored in a SQL table, to improve performance and reduce contention. By default, all of the columns of a row are stored in a single database key. https://largedatabank.com/posts/2012-12-04-pfds-section-2-dot-2-exercises/ Tue, 04 Dec 2012 18:48:00 -0400 https://largedatabank.com/posts/2012-12-04-pfds-section-2-dot-2-exercises/ Section 2.2’s exercises define some optimizations to the section’s unbalanced tree set implementation. Exercise 2.2 The implementation of member that Okasaki gives for binary search trees in section 2.2 performs 2d comparisons for a tree of depth d in the worst case, when searching for a number that is the farthest to the right on the tree, and when the right path in the tree is of depth d itself. This is because every call of member checks whether x < y and, if not, whether y < x. https://largedatabank.com/posts/2012-05-01-pfds-section-2-dot-2/ Tue, 01 May 2012 16:33:00 -0400 https://largedatabank.com/posts/2012-05-01-pfds-section-2-dot-2/ Section 2.2 presents immutable sets implemented with unbalanced binary search trees, a slightly more complex example of immutable data sharing than the list example in Section 2.1. My first challenge was to reimplement Okasaki’s base implementation of unbalanced binary search tree sets using idiomatic Scala. I had to learn a fair amount more about Scala’s type system to be able to write such an implementation, so I figured I’d write up some of the things I learned about Scala in the process as well as the implementation. https://largedatabank.com/posts/2012-01-31-abstract-generic-collections-section-2-dot-1-redux/ Tue, 31 Jan 2012 00:34:00 -0400 https://largedatabank.com/posts/2012-01-31-abstract-generic-collections-section-2-dot-1-redux/ At the end of my last post, I mentioned that I ended up reusing Scala’s build-in List collection to implement the exercises instead of writing a generic abstract Stack and sample implementations of those. Since then, I’ve spent some time learning about how to implement generic collections in Scala. I came up with a Stack trait, a la Okasaki’s Stack signature, and three implementations: the first two are straightforward translations of the SML structures given in the book, and the third is a more Scala-idiomatic implementation. https://largedatabank.com/posts/2012-01-27-chapter-1-dot-1/ Fri, 27 Jan 2012 22:09:00 -0400 https://largedatabank.com/posts/2012-01-27-chapter-1-dot-1/ This is the inaugural post of the PFDS series. Section 2.1 discusses the ramifications of implementing lists and stacks in a functional and immutable manner. Using the operation of list catenation as a motivator, Okasaki introduces the idea of data sharing. We see that to catenate two lists, we can share the second list, which doesn’t get modified, but must copy all of the nodes in the first list just to modify the last one. https://largedatabank.com/posts/2012-01-03-notes-on-purely-functional-data-structures/ Tue, 03 Jan 2012 01:24:00 -0400 https://largedatabank.com/posts/2012-01-03-notes-on-purely-functional-data-structures/ I heard a lot of good things about Mike Okasaki’s Purely Functional Data Structures at UChicago, but didn’t ever take the time to check it out. Lately I’ve missed the heady joy of reading and writing code in a strongly typed functional programming language like Standard ML, so when one of my coworkers at Knewton mentioned he was going to read the book I decided to get a copy for myself. https://largedatabank.com/about/ Mon, 02 Jan 2012 02:04:00 -0400 https://largedatabank.com/about/ I’m Jordan Lewis. I’m a software engineer at Cockroach Labs and I’m a townie, still living in my hometown of Brooklyn, New York. Previously I worked at Knewton I graduated from The University of Chicago in 2011 with a B.S. in Computer Science. Download my resume (LaTeX source). I write code on GitHub. Check out my Twitch programming stream, LARGE DATA BANK! I got programming videos on YouTube I occasionally like to answer questions on Stack Overflow. https://largedatabank.com/posts/2012-01-02-hello-world/ Mon, 02 Jan 2012 01:50:00 -0400 https://largedatabank.com/posts/2012-01-02-hello-world/ Hi internet! I’ve gotten with the program and bloggified my website with the help of the pretty rad Octopress framework. Hope you enjoy it.