Backup & Restore
Back up Tymeslot with pg_dump and cron automation. Covers Docker volume backup for uploaded files and step-by-step recovery from a complete data loss.
About
Luka Breitig created and maintains Tymeslot. He built the scheduling engine, the CalDAV sync layer, the Phoenix LiveView booking UI, and the embeddable widget infrastructure: the systems documented in these pages. He works as a software engineer and AI developer, based in Warsaw, Poland.
His technical focus sits across two areas:
- Elixir and Phoenix LiveView: production backend services, real-time interfaces, and self-hostable platform architecture
- AI-assisted development: LLM integration, RAG pipelines, and agentic workflows built with Claude and OpenAI
His other live projects include In A Nutshell (AI semantic search for video content with timestamp citations) and Transvexis (multilingual translation serving clients in 39+ languages).
Alongside building, Luka trains engineering teams on AI-assisted software development: agentic workflows, AI code review, and navigating unfamiliar codebases with tools like Claude Code and Cursor. He delivers workshops for organisations including NobleProg and Cegos Integrata, and has spoken at international developer conferences on AI integration and production patterns.
Expertise
Elixir
Phoenix LiveView
Phoenix Framework
AI-Assisted Development
AI & Large Language Models
RAG Systems
Prompt Engineering
PostgreSQL
Docker
Self-Hosting
Workflow Automation
n8n
Python
Experience
- Author and maintainer of Tymeslot, built in Elixir and Phoenix LiveView
- Ships production software daily using AI-assisted development tooling
- Delivers AI-assisted development training for NobleProg, Cegos Integrata, and engineering teams across Europe
Education
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Psychology BSc 2010–2013University of Osnabrück
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Management MA 2013–2016Zeppelin University, Friedrichshafen, Germany
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SDW Scholar, German Foundation of Business (Top 2%)
Articles by Luka
Page 2 of 7reCAPTCHA Bot Protection
Protect Tymeslot booking forms with Google reCAPTCHA v3 — invisible bot detection with score-based thresholds and no CAPTCHA friction for legitimate users.
Data-at-Rest Encryption
Encrypt integration credentials at rest with a dedicated DATA_ENCRYPTION_KEY, decoupled from SECRET_KEY_BASE. Covers enabling the key, migrating existing credentials, key backup, and rotation.
HTTP Proxy Configuration
Route Tymeslot's outbound HTTP traffic through a corporate proxy or firewall. Covers HTTPS_PROXY, authenticated proxies, NO_PROXY bypass rules, and TLS-inspecting proxy setup.
Stripe Payments Setup
Run meeting payments on your own Stripe Connect platform. Covers platform registration, the Connect webhook endpoint with its events and API version, and the environment variables.
Environment Variables Reference
Complete reference for all Tymeslot environment variables: database, email, OAuth, reCAPTCHA, Telegram, Stripe payments, HTTP proxy, video conferencing, logging, and clustering.