BREAKING: Fly.io Capacity Issues in CDG Region – Workarounds Inside

Fly.io is experiencing capacity constraints in the Paris CDG region affecting some users. Here's what's down, who's affected, and immediate fixes.

BREAKING: Fly.io CDG Capacity Issues – What You Need to Know

What's Down & Who's Affected

Fly.io is currently experiencing capacity issues in the CDG (Paris Charles de Gaulle) region. This affects:

New deployments to the CDG region may fail or queue

Existing apps in CDG may experience degraded performance

European users accessing CDG-deployed apps may see latency spikes

Status: Under investigation by Fly.io infrastructure team

Not affected: Other regions (IAD, ORD, SFO, LHR, etc.) appear operational at this time.

---

Immediate Workarounds (Act Now)

1. Redirect Traffic to Alternate Region

If you're serving European users: ```bash fly regions add ams # Amsterdam (alternative EU region) fly scale count -r cdg 0 # Temporarily scale down CDG fly deploy ```

2. Deploy to Alternative EU Regions

For new deployments, use these regions instead:

ams (Amsterdam) – closest alternative

lhr (London) – solid EU fallback

fra (Frankfurt) – another EU option

3. Rollback or Scale

```bash fly status # Check current state fly scale count -r cdg 0 # Remove CDG instances fly regions remove cdg # Remove region from app ```

4. Enable Geo-Failover (If Configured)

If you've configured multiple regions, your traffic should naturally shift. Monitor this in real-time.

---

How to Check If Your Project Is Affected

Quick checks:

1. Via Fly CLI: ```bash fly status fly regions list ``` Look for CDG instances showing unhealthy or pending states.

2. Via Fly Dashboard: - Go to your app → Deployments - Check if recent CDG deployments are stuck in "pending" - View Metrics tab for CDG performance dips

3. Direct Test: ```bash curl -I https://your-app.fly.dev ``` High latency (>500ms) from Europe = you're affected.

4. Check Fly Status Page: Visit https://status.fly.io – CDG incident will be posted there.

---

Alternative Hosting to Consider (Temporary)

If you need immediate relief:

Vercel – excellent for frontends, serverless functions

Railway – simple deployments, growing EU infrastructure

Render – reliable, EU region options available

DigitalOcean App Platform – AMS region available

Heroku – established, though pricier

Note: Only switch if critical. This incident should resolve within hours.

---

How to Monitor Recovery

Real-Time Monitoring:

1. Fly Status Page: https://status.fly.io (updates every 15-30 min) 2. Fly Discord: #incidents channel for real-time updates 3. Your CLI: ```bash fly monitor # Watch your app health ```

4. Set Alerts: ```bash fly alerts list fly alerts add --type request_rate ```

5. Community: Check r/devops or HN for user reports

Recovery Signals to Watch For:

Fly status page shows "resolved" or "investigating" ends

New CDG deployments succeed without queuing

Latency metrics return to baseline (<150ms)

Your fly status shows healthy instances

---

Final Takeaway

This is temporary. Capacity issues typically resolve within 2-6 hours as Fly.io provisions additional capacity or traffic naturally rebalances. Use workarounds now, monitor the status page, and be ready to redeploy to CDG once it's healthy again.

Stay calm. Stay monitoring. You've got this.

—Senior Dev, StillNotAThing.com