When Your App Needs to Act Later
Reminders, expirations, retries, follow-ups, status checks — most backend systems eventually need to schedule work for a specific time and know that it actually ran. Each guide includes code examples, a DIY comparison, and the tradeoffs worth knowing.
Scheduling patterns
Reminders and follow-ups
- • Trial reminders before expiry
- • Abandoned cart nudges
- • Onboarding follow-ups
Expiration and timeout checks
- • Invitation expiry after 7 days
- • Reservation hold releases
- • Trial window enforcement
Reliable debounce
- • Alert consolidation
- • Noisy event stream coalescing
- • Activity-settled triggers
Status polling and check-later
- • Async job completion checks
- • External API status polling
- • Post-deploy verification
Integration and webhook bridges
- • Webhook-to-webhook handoffs
- • Delayed settlement follow-ups
- • Cross-service notifications
Not sure which tool fits?
If you are evaluating alternatives or deciding whether Posthook is the right approach, these comparisons may help.
Cron vs Posthook
When cron stops being enough
Read comparisonBullMQ vs Posthook
Queue-backed jobs vs managed scheduling
Read comparisonQStash vs Posthook
Serverless messaging vs scheduling-first
Read comparisonTemporal vs Posthook
Durable execution vs managed scheduling
Read comparisonInngest / Trigger.dev vs Posthook
Durable functions vs managed scheduling
Read comparisonVercel Cron vs Posthook
Static cron vs dynamic scheduling
Read comparisonSidekiq vs Posthook
Background jobs vs managed scheduling
Read comparisonCelery vs Posthook
Task queues vs scheduling API
Read comparisonEventBridge Scheduler vs Posthook
AWS orchestration vs managed HTTP delivery
Read comparisonCloud Scheduler vs Posthook
GCP cron vs scheduling API
Read comparisonCloud Tasks vs Posthook
Task queue with 30-day cap vs scheduling API
Read comparisonHeroku Scheduler vs Posthook
Best-effort cron vs reliable scheduling
Read comparisonSolutions
Starting from the problem you are solving.
Serverless scheduling
Dynamic scheduling for Vercel, Netlify, Cloudflare, and Lambda — beyond platform cron.
Read moreSchedule API calls
Schedule HTTP requests and webhooks for any future time with one API call.
Read moreReminder API
Per-user reminder and notification scheduling with timezone-aware delivery.
Read moreAlongside your stack
How Posthook coexists with queues, workflow engines, and cron.
Read moreFramework guides
Step-by-step integration guides with code examples for your stack.
Next.js
Schedule hooks from API routes and server actions
See the guideExpress
Schedule hooks from Express route handlers
See the guidePython
Schedule hooks from FastAPI, Flask, or Django
See the guideGo
Schedule hooks from net/http handlers
See the guideRails
Schedule hooks from Rails controllers via HTTP API
See the guideDon't Build Your Own Scheduling System.
Start free and schedule your first webhook in minutes. No credit card required.
1,000 free hooks per month included