@balagrivine

Caching Will Humble You

2d ago · 5 min read · There are only two hard things in Computer Science: cache invalidation and naming things -- Phil Karlton I recently took on a side-quest to refactor one of the applications I first worked on when joi

Be Mindful of Your Config Changes

Apr 25 · 3 min read · From Google's SRE book; "The cost of failure is education." Devin Carraway Yesterday; okay, might not be yesterday depending on when you bump into this :), I decided to explore the idea of having a

The WAL Hole Problem

Apr 18 · 8 min read · TL;DR Too Short;Just Read If a WAL write is interrupted by a Unix signal, or completes as a short write, the kernel may leave a zero-filled gap at the reserved offset. During crash recovery, TidesDB'

When should you fsync directories?

Apr 11 · 4 min read · My previous article talked about promises of disk durability, and the fact that you could still lose data even after fsync()-ing a file. This will be a short blog that builds over the previous one, bu

Was your data actually written to disk?

Apr 5 · 7 min read · When we think of data durability, one thing comes to mind. That data has been safely stored such that an adverse occurrence like power outage or system crash doesn't lead to data loss. In this article