Snapwre Resources

Engineering Blog

Technical deep-dives, detailed architecture decisions, and hard-earned lessons from building complex systems at scale.

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Telecom & VoIP

11 min read

Chasing a 'Connection Refused' Through Three Wrong Theories

How a Go panic hidden behind a stderr redirect masqueraded as a network problem in our FreeSWITCH outbound ESL server.

Temkin MengistuMay 15, 2026

5 Common Mistakes When Building Your First Production API

Backend & Infrastructure

9 min read

5 Common Mistakes When Building Your First Production API

The real gotchas every engineer hits when shipping their first backend system — and how to avoid them. From silent N+1 queries to the auth bug that took down production.

Temkin MengistuMay 11, 2026

AI & Cloud

11 min read

RAG vs Fine-Tuning: Which AI Approach Should You Actually Use?

A straight-talking decision guide for founders and CTOs choosing an AI strategy. When retrieval wins, when fine-tuning pays off, and the hybrid pattern most production systems actually use.

Temkin MengistuApr 16, 2026

AI & Cloud

10 min read

Why We Built Dataset.ET on Telegram: A Lesson in Community-First Data Collection

How choosing Telegram instead of a custom web app turned Dataset.ET from a vision into a thriving community preserving 80+ Ethiopian languages — and what we learned collecting over 1.3M sentences with volunteer contributors on a $5/month server.

Temkin MengistuMar 22, 2026

AI & Cloud

12 min read

Building a Production RAG Pipeline with Qdrant and FastAPI

A practical guide to building retrieval-augmented generation systems that actually work at scale. Learn how to implement document ingestion, chunking strategies, and vector search optimization.

Temkin MengistuFeb 25, 2026

How We Handle a Million Calls a Day: Kamailio Architecture

Telecom & VoIP

15 min read

How We Handle a Million Calls a Day: Kamailio Architecture

Architecture walkthrough of a production VoIP system handling carrier-grade traffic with Kamailio, FreeSWITCH, and Asterisk.

Temkin MengistuFeb 4, 2026