donny eats tech

Donny — backend engineer

recent work

View all work →
Senior Software Engineer — Clientell
oct 2025 – present
Agent execution, streaming, infra, background jobs, observability.
Clientell — an AI agent for Salesforce, deployed across 500+ orgs including Notion, Rakuten, and PwC.
previously: Fae (Backend Engineer) · Gida (Software Engineer) →

writing

View all writing →
22 oct 2026 · 7 min read
Dynamic Memory Allocation and Its Arch Enemy, Fragmentation
Comparing how malloc on macOS (xzone) and Ubuntu (glibc) lay out memory, and how each deals with fragmentation.
17 jul 2026 · 19 min read
Yes, you can store JSONs in Postgres. No, you shouldn't. Well, it depends
The storage mechanics, indexing tradeoffs, and when JSON in Postgres helps — and when it burns you.

projects

View all projects →
$ ./ superlite3
Single-file embedded database from scratch in C, modeled on SQLite3.
c
$ ./ redis-go
Redis-compatible server in Go — RESP2 protocol, TTL expiry, SQLite-backed durability.
go

tweets

View all on X →
@donnyeatstech

accidentally "recovered" some unwanted changes from a swap file which absolutely garbled my c file. luckily had a compiled binary which claude disassembled to recover it

31 aug 2026
@donnyeatstech

hermes agent and deepseek v4 flash are a match made in heaven

26 jul 2026
@donnyeatstech

K3 is insane. Single shotted a redis compliant in memory cache with sqlite3 for durability at 35000 wps on an Apple nvme at 135 ns/op

19 jul 2026