donny eats tech

Donny — backend engineer

systems · math · software

I'm a backend engineer.

I like event-driven systems, fan-outs, consensus and math. I mostly use Codex at work, and for my personal stuff, Hermes Agent with OpenCode, running Kimi K3, DeepSeek V4 Flash, V4 Pro. I'm building stuff that I like whilst tinkering with the agentic setup that builds it.

↓ resume

recent work

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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 (Lead Backend Engineer) · Gida (Software Engineer) →

writing

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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.
Essay · Substack
13 jun 2026 · 3 min read
From the Birthday Paradox to Consistent Hashing
A conceptual bridge from probability to load distribution, toward Google's "Consistent Hashing with Bounded Loads".

projects

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$ ./ redis-go
Redis-compatible server in Go — RESP2 protocol, TTL expiry, SQLite-backed durability.
go
$ ./ mit-6.5840
MIT's distributed systems course — Raft consensus, MapReduce, and distributed kv stores.
go

tweets

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@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