lab notes
A good part of the week was spent reading and watching talks on "The simple essence of automatic differentiation". I got the gist the first go around but much of the details were opaque to me. Reading it this second time around and actually working through the examples
lab notes
Reading more papers, mostly focused on Relaxed Radix Balanced Trees, since other trees, such as B-trees, Finger Trees, and HAMT trees seem to predate the research on this one. The premise is generally pretty simple, but the devil is in the details. The papers on it are fairly clear. I
lab notes
Watched lectures and read papers on persistent trees, and come away feeling like it's a rabbit hole. I initially found it difficult to implement a B+-tree in Rust, due to ownership rules, so I stopped. As much of an advantage it would be to have these things implemented, it's a commodity.
lab notes
I spent a bunch of time mapping out the architecture of Datomic in detail. Diving into all the details revealed all the different places my knowledge was spotty, or where Rich Hickey glossed over the details. * Are the internal nodes of the storage-backed index only in memory, or are they
lab notes
For the programming environment, I wanted a database embedded in it. I had stuided the architecture of Datomic, and it seems a convincing architecture to solve the problem of creating offline apps distributed online. However, Datomic is proprietary, and there isn't an official corresponding client side database either.
programming
What if the changes to the input result in state changes that can't be computed fast enough to keep the user interface snappy for an interactive program? Reactivity to the rescue. It's a way to drastically reduce the amount of computation required to compute an output given a change to the input.
web
While most front-ends today have largely agreed on the design of the rendering subsystem, we seem to be grappling with design of the interactive subsystem.
web
Shared mutable state invites complexity into our programs. Programming languages help with this complexity inside a program, but not across network boundaries between programs.
retro review
A review of the wanderings in 2021, and a focus for 2022.
pipeline
I implemented a backfill mechanism with the basic hooks, so when the pipeline is brought back up after some downtime, it'll not only do its job of ingesting new blocks for interest rates, but it will also see how many of the last 128 blocks it missed and ingest those.
cryptocurrency
In the last couple of years, people have been building a global, open alternative to every financial products you use today, accessible to anyone in the world with a smartphone and internet connection.
pipeline
I decided to write my own version of React, but for the purposes of building ETL backends for small to medium workloads.