Cost Optimization

Minimize costs when running EdgeBase on Cloudflare.

Cloudflare Pricing Overview

Resource	Free Tier	Paid Plan
Workers Requests	100K/day	10M/month included
DO Requests	100K/day	1M/month included
DO Storage	5 GB total	5 GB included
R2 Storage	10GB	10GB + $0.015/GB
R2 Operations	1M reads/month	10M + $0.36/M
R2 Egress	$0	$0
KV Reads	100K/day	10M/month

Cost Strategies

1. Use DB block for Multi-Tenancy

Isolating by user or workspace distributes data across Durable Objects, keeping each DO small:

tables: {
  notes: {
    user:{id} DB block,  // Each user = own DO
  },
}

✅ Benefits: Small SQLite databases, fast queries, natural data isolation ⚠️ Tradeoff: Cross-user queries require aggregation patterns

2. Minimize DO Billing Duration

Durable Objects charge per GB-second while a DO has an active request. EdgeBase uses context.waitUntil() for background work to return responses fast, minimizing billing duration.

3. Rate Limiting at Zero Cost

HTTP rate limiting uses a 2-layer approach: a per-isolate software counter (primary) and a Cloudflare Rate Limiting Binding (safety net). That path does not use DO storage. The database subscriptions pending-connection gate does use KV, so treat it as a different mechanism. See Rate Limiting for details.

4. R2 for Zero-Egress Storage

Cloudflare R2 has $0 egress. Serve files (images, videos, PDFs) from R2 instead of bundling in DO storage.

5. D1-Based Auth (Built-in)

Auth operations go directly to D1 (AUTH_DB), with no Durable Object overhead. D1 works well on the Free plan for small apps, and the Workers Paid plan raises limits to 25B reads and 50M writes per month. If you outgrow D1 limits, switch to Neon PostgreSQL with a single config change — no code modifications, no migration downtime.

Example Monthly Costs

Small App (1K MAU, 100K requests/month)

Resource	Usage	Cost
Workers Paid	Base (account-level)	$5.00
DO Requests	~200K	$0 (included)
R2 Storage	1GB	$0 (included)
Total		$5/month

Medium App (50K MAU, 5M requests/month)

Resource	Usage	Cost
Workers Paid	Base	$5.00
DO Requests	~10M	$0.15 × 9 = $1.35
DO Storage	5GB	$0.20 × 4 = $0.80
R2 Storage	50GB	$0.015 × 40 = $0.60
Total		~$8/month

Large App (500K MAU, 50M requests/month)

Resource	Usage	Cost
Workers Paid	Base	$5.00
Workers Requests	50M	$0.30 × 40 = $12.00
DO Requests	~100M	$0.15 × 99 = $14.85
DO Storage	50GB	$0.20 × 49 = $9.80
R2 Storage	500GB	$0.015 × 490 = $7.35
Total		~$49/month

Compare with Firebase ($275 auth alone at 100K MAU) or Supabase ($25 base + usage).