Independent directory. VektorIndex is not affiliated with or sponsored by any listed vendor. All specifications are sourced from official vendor documentation.
Head-to-Head Specification Audit
Upstash vs Fly.io
Serverless Redis & Kafka for AI Applications · Global
Specification Matrix
| Metric | Upstash | Fly.io |
|---|---|---|
| Starting Price | CustomBetter | Custom |
| API Rate Limit | 1000 req/min | N/A |
| Target Country | Global | Global |
| Category | AI Infrastructure | Cloud Hosting & Edge |
| Compliance | SOC2, GDPR | SOC2, GDPR |
| Hosting Regions | EU-West, US-East, AP-Southeast, US-West | US-East, EU-West, AP-Southeast, AF-South-ZA |
| Native Integrations | 5 listedBetter | 5 listed |
Upstash — Key Specs
- ✓Serverless Redis with per-request pricing — zero cost at zero scale
- ✓QStash: job queue and scheduled tasks for serverless/edge
- ✓Vector DB (beta): serverless vector store with embedding support
- ✓Global replication: data closest to users
Fly.io — Key Specs
- ✓Deploy Docker containers to 30+ global regions — closest to ZA is Johannesburg (jnb)
- ✓Machines API launches VMs in under 300ms — ideal for per-request compute isolation
- ✓Fly Volumes provide persistent SSDs for stateful apps like databases and file stores
- ✓Free allowance covers 3 shared-CPU VMs and 3GB of persistent storage permanently
Frequently Asked Questions
What is cheaper, Upstash or Fly.io?+
Both tools start at $0/mo on their entry plans.
Which tool is better for compliance — Upstash or Fly.io?+
Both support SOC2, GDPR.
Which tool is better suited for Global?+
Upstash is evaluated for Serverless Redis & Kafka for AI Applications in Global with hosting regions: EU-West, US-East, AP-Southeast, US-West. Fly.io has hosting regions: US-East, EU-West, AP-Southeast, AF-South-ZA. For data residency in Global, check each vendor's data processing agreements.
Data last verified: 26 June 2026
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