Cache & queues

Cloudflare · Workers Free

Global key-value store on the Workers Free plan with 100,000 reads and 1,000 writes a day and 1 GB of storage; operations fail once a daily limit is hit.

• 100Kreads / day
• 1Kwrites / day
• 1 GBstorage

• Can't bill you
• No card

Aiven · Free

A single-node managed Valkey (Redis OSS-compatible) service on a dedicated VM with 1 GB of RAM and 1 CPU, with no time limit; idle services may be powered off, and are deleted after 180 days off.

• 1 GBmemory
• 1vCPU

• Deletes after 180 idle days
• Commercial use
• Can't bill you
• No card

Upstash · Free

HTTP message queue and scheduler with 1,000 messages a day, 50 GB of bandwidth a month and up to 10 active schedules.

• 1Kmessages / day
• 50 GBbandwidth / month
• 10active schedules

• Deletes after 7 idle days
• Can't bill you
• No card

Upstash · Free

One serverless Redis database with 250 MB of data, 500,000 commands and 10 GB of bandwidth a month; commands are rejected at the monthly limit.

• 500Kcommands / month
• 10Kcommands per second / second
• 250 MBstorage

• Deletes after 7 idle days
• Can't bill you
• No card

Render · Free

One Redis-compatible Key Value instance (Valkey 8) per workspace with 25 MB of RAM and 50 connections. Data is held only in memory and lost on every restart; clients outside Render can connect over TLS once their IPs are allow-listed.

• 25 MBmemory
• 50connections at once
• 1instances

• Commercial use restricted
• Stops at the limit

Vercel · Hobby

Vercel's global, read-optimized config store (formerly Edge Config) on the free Hobby plan: one store of up to 1 MB with 100,000 reads and 100 writes a month; Hobby cannot buy extra usage and is for personal, non-commercial use only.

• 100Kreads / month
• 100writes / month
• 1 MBstorage

• Non-commercial only
• Can't bill you

Cloudflare · Workers Free

Message queues on the Workers Free plan with 10,000 operations a day per account (about 3 per delivered message) and messages kept for 24 hours.

• 10Koperations / day
• 24 hretention

• No card

CloudAMQP · Little Lemur

Each free Little Lemur instance is a vhost on a shared RabbitMQ broker with 1 million messages a month, 100 queues, 10,000 queued messages and 20 connections; an account may hold up to 49 free instances. Meant for development; queues not consumed from for 28 days are deleted, and so are instances with no messages published or consumed for two months.

• 1Mmessages / month
• 10Kqueued messages
• 100queues

• Deletes after 28 idle days
• No card

Redis · Free

One 30 MB Redis Cloud database with 30 connections, 100 ops/sec and 5 GB of bandwidth a month, meant for learning and test projects.

• 100operations per second / second
• 30 MBstorage
• 5 GBbandwidth / month

• Deletes after 14 idle days
• Commercial use restricted

Amazon Web Services · Always Free

1 million Amazon SQS requests a month free for all AWS customers, each request carrying up to 10 messages; on the Paid plan, usage above that is billed.

• 1MSQS requests (API actions) / month

• Bills overage

Google Cloud · Free Tier

10 GiB of Pub/Sub message throughput free every month per Cloud Billing account; a billing account with a payment method is required, and throughput past the allowance is billed at $40 per TiB.

• 10 GBmessage throughput / month

• Commercial use
• Bills overage
• Card required