Blog

Why Reading Parquet from S3 Is Slow (Even In-Network) and What I Did Instead

April 01, 2026

S3 in-network reads still have a ~300ms latency floor. Downloading parquet files to ephemeral disk at startup gave me local-disk speeds (~3ms) for free on Railway.

Polymarket Balance/Allowance Error: A Fractional Shares Problem?

October 07, 2025

An issue I ran into and some findings. Still not fully sure.