0cron
Cron jobs with secrets and alerts
Serverless task scheduling platform. Natural language cron syntax, timezone support, secrets management, and multi-channel alerting. Built in Rust for reliability.
Building 0cron
Heartbeat Monitoring: When Your Job Should Ping You
The inverse of scheduled jobs: give your cron a URL to ping, and 0cron alerts you when the ping stops. Grace periods, token generation, and PostgreSQL interval arithmetic.
Encrypted Secrets, API Keys, and Security
AES-256-GCM encryption, ${secrets.KEY} interpolation, JWT + API key authentication, Google Sign-In verification, and HMAC webhook signing -- the security layers of 0cron.
From Abidjan to Production: Launching 0cron.dev
The full story of building 0cron.dev: 3 sessions, 4 agents, 3,500+ lines of Rust, a SvelteKit dashboard, Stripe billing, and an admin system -- all from Abidjan with zero human engineers.
Why the World Needs a $2 Cron Job Service
The cron job market is broken: free tools are unreliable, paid tools start at $19/mo. Here is why we built 0cron at $1.99/mo unlimited from Abidjan.
4 Agents, 1 Product: Building 0cron in a Single Session
How we used a 4-agent parallel team to build a marketing website and a full Rust API server -- 14 endpoints, 8 DB tables, 2,852 lines -- in a single session.
Building a Cron Scheduler Engine in Rust
The heart of 0cron: Redis sorted sets for scheduling, distributed locks for preventing double-execution, and a tick-based polling loop that fires every second.
"Every Day at 9am": Natural Language Schedule Parsing
How we built a 152-line regex-based NLP parser that converts plain English like "every Monday at 2pm" into cron expressions -- and why we chose regex over an LLM.
From Static HTML to SvelteKit Dashboard Overnight
How we converted a static marketing page into a full SvelteKit 2 dashboard with Svelte 5 runes, auth store, API client, and a CronBuilder wizard -- in one session.
Multi-Channel Notifications: Email, Slack, Discord, Telegram, Webhooks
How we built a 296-line notification service supporting 5 channels with per-channel success/failure filtering, Slack Block Kit, and graceful SMTP fallback.
Stripe Integration for a $1.99/month SaaS
Checkout sessions, webhook signature verification, 60-day trials, and the full billing lifecycle -- how we integrated Stripe for a micro-SaaS at $1.99/month.