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Serverless Cache / KV · decision tool

Cheapest serverless cache/KV at your volume

Upstash Redis and Cloudflare Workers KV priced at YOUR monthly reads and writes from verified per-operation rates. They're different products (full Redis vs eventually-consistent edge KV) — the cost and the caveats are both shown. Instance-priced options excluded.

Prices verified 2026-07-17 against official pricing pages · fit weights are our estimates (see methodology) · share the URL to share your configuration

As of Jul 2026, with 10M reads/month, 1M writes/month, a $10 budget for this slot, Cloudflare Workers KV ranks first for these inputs at 89% fit and a StackSays-estimated $5.00/month (Upstash Redis: 25% fit, $21.00/month). Fit weights are our estimates; prices trace to official pages. Change any input below and the verdict recomputes.

Your situation

The verdict updates as you move these.

Clear pick for your inputs

Cloudflare Workers KVfit 89% · est $5.00/mo

Eventually-consistent edge key-value — cheap global reads, but NOT a Redis substitute

vs Upstash Redis: fit 89% against 25%, est $5.00 against $21.00 per month

Cloudflare Workers KVfit 89%
$5.00/mo
Upstash Redisfit 25%
$21.00/mo

The decision, in plain words

For a solo builder at 10M reads/month and a $10.00/mo budget for the serverless cache slot, Cloudflare Workers KV leads at 89% fit and $5.00/mo. The two rules doing the work: budget fit (~$5/mo is 50% of your $10/mo budget); ecosystem maturity (established — our estimate from ecosystem age, docs and hiring pool).

The gap to Upstash Redis (25% fit) is wide at these inputs — you'd need to change your requirements, not your taste, to flip it.

Honest weak spot of the pick: proprietary edge kv api — not portable, and not a redis substitute.

Generated from the calculation above — every number traces to the sourced data; nothing here is written by an AI making things up.

Why Cloudflare Workers KV scores 89%

Budget fit (weight 30, our estimate) — ~$5/mo is 50% of your $10/mo budget+30
Exit cost (weight 4, our estimate) — Proprietary edge KV API — not portable, and not a Redis substitute-1.2
Ecosystem maturity (weight 8, our estimate) — established — our estimate from ecosystem age, docs and hiring pool+8
Free-tier runway (weight 10, our estimate) — Free tier exists (100K reads/day + 1K writes/day + 1GB (daily limits — demo scale)) — a cheap staging/dev lane even after you outgrow it+4
Total (lines sum exactly)40.8
Possible range −52…+52 (sum of active rule weights) · fit % = (total + max) / (2 × max)(40.8 + 52) / 104 = 89%

How the $5.00/mo estimate is calculated

Workers Paid base — includes 10M reads, 1M writes$5.00
Note — $5/mo Workers Paid includes 10M reads + 1M writes; then $0.50/M reads, $5/M writes; storage $0.50/GB$0
Monthly total (lines sum exactly)$5.00

What could change this verdict

No single input change within the tested range changes the winner.

Cost risk

Estimated now (StackSays estimate, not your final bill)$5.00/mo · Workers Paid
Free-tier statusFree tier exceeded (reads 10M > 3M cap)

Official prices verified 2026-07-17; calculation is deterministic code over those prices.

At a glance

ToolFree tierPaid entryVerified
Upstash RedisNo free tierPay-as-you-go — $0.20/100K commands (reads and writes billed the same); first 500K commands/month free; storage $0.25/GB + bandwidth not modeled2026-07-17
Cloudflare Workers KV100K reads/day + 1K writes/day + 1GB (daily limits — demo scale)Workers Paid $5/mo2026-07-17
Where did you land?anonymous, one click

Data sources

ToolSourceVerified
Upstash RedisUpstash Redis pricing (official)2026-07-17
Cloudflare Workers KVCloudflare Workers KV pricing (official)2026-07-17

A monitor re-checks these pages for changes; when a vendor moves a price, the date updates and every verdict recomputes.