Reliability & Redundancy
Reliable background jobs, simplified.
Engineered for 99.99% uptime with automatic multi-region failover, ensuring your critical cron jobs execute exactly once, every time.
System Architecture
Multi-Region Redundancy & Automatic Failover
CronFlow distributes job queues across three geographically isolated cloud regions (us-east-1, eu-west-1, ap-southeast-1). If a primary region experiences latency or downtime, our control plane automatically reroutes pending jobs to the nearest healthy region within 1.2 seconds.
Active-Active Load Balancing
Jobs are sharded by tenant ID and replicated across primary and secondary dispatch nodes. This eliminates single points of failure while maintaining strict execution order per queue.
Dead-Letter & Retry Logic
Failed payloads are automatically captured in isolated dead-letter queues. Exponential backoff retries (max 5 attempts) ensure transient network blips never result in permanent data loss.
Idempotency Guarantees
Every job carries a unique execution fingerprint. Our deduplication layer prevents duplicate runs during region switchover, protecting your downstream APIs from race conditions.
Performance Metrics
99.99% SLA Backed by Real-Time Telemetry
Our infrastructure is continuously monitored by Datadog and PagerDuty. The following metrics reflect average performance across 14,000+ enterprise tenants in Q3 2024.
Uptime Guarantee
99.99% monthly availability SLA. Credits are automatically issued to your account if our control plane drops below this threshold, verified by independent uptime monitors.
Failover Latency
Average region-to-region switchover completes in 1.2 seconds. Job execution resumes without manual intervention or API reconfiguration.
Job Loss Rate
0.0001% unprocessed jobs annually. Persistent disk-backed queues and synchronous ACK protocols ensure payloads survive node restarts and network partitions.