#+OPTIONS: toc:nil num:nil creator:nil author:nil

** Wed Feb 15 00:37 UTC; omar
I am frustrated. See if you can spot the problem with this:

#+begin_src clojure
(defn reload-lat!
  "Refreshes the lat from disk, returning the updated lat."
  ^Lat [{:keys [cached-lat] :as this}]
  (swap! cached-lat reload-lat this))

(defn disk-interface
  "Creates a stateless interface for loading a line from disk.
   Automatically triggers an asynchronous reload when instantiated."
  [index-file-path
   inventory]
  (let [this {:index-file-path   index-file-path
              :cached-lat        (atom nil)
              :inventory         inventory}]
    (future (reload-lat! this))
    this))
#+end_src

This codebase has statefulness all over it, every other
function has a bang at the end. There's a MutableStore
implementation which has the docstring "A stateful wrapper
around an ImmutableStore". Its only method is ~put~ ffs.

I think there's a fundamental misunderstanding of words in
play.

Also, this is a disk based storage model. I think that's a
terrible idea for software which needs to serve multiple
requests possibly concurrently.

Anyway, I'm done for now. I need to stop thinking about this.