Hacker News Reader

Looks like .gz is basically a free lunch in terms of CPU/memory impact with a decent size savings.

I was surprised to see xz and bzip2, but not LZ4 or Snappy.

the algorithms chosen are a mix of "most common" and what comes out of the box with python's standard library to avoid extra dependencies.

Exactly. I replied also before reading you answer.

The Django code use only compression algorithms already included in the Python standard library to avoid unnecessary dependencies.

You're totally right. But you can choose also to use xz or bz2 for smaller files if you have spare cpu/memory.