SnapWre Resources

Engineering Blog

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

Telecom & VoIP

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.

  • FreeSWITCH
  • Golang
  • Debugging
  • Production
  • Open Source

Backend & Infrastructure

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.

  • API Design
  • Backend
  • REST
  • Production
  • Best Practices

AI & Cloud

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.

  • RAG
  • Fine-Tuning
  • LLM
  • AI Strategy
  • Architecture

AI & Cloud

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.

  • Dataset.ET
  • Telegram
  • Community
  • NLP
  • Language Preservation
  • Ethiopian Languages

AI & Cloud

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.

  • RAG
  • Qdrant
  • Vector Database
  • FastAPI
  • Python
  • LLM

Telecom & VoIP

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.

  • Kamailio
  • FreeSWITCH
  • Asterisk
  • VoIP
  • SIP
  • Telecom

Backend & Infrastructure

Self-Healing Web Scrapers: Building Anti-Fragile Data Pipelines

How to build web scrapers that detect website changes and automatically adapt. A deep dive into the 130+ scraper system we built for Lynk.

  • Web Scraping
  • Python
  • Selenium
  • Scrapy
  • AWS SQS
  • Data Pipeline