Limits on Aria Cloud: apps, services, databases and more

One Aria server runs up to 5 projects, and one aria.yaml holds up to 12 services and 6 databases. Memory is the limit that matters first: Aria estimates your stack before you pay and names the smallest plan that fits. These limits are the ones the product enforces today. Where a number is a default that Aria’s team can change, the table says so.

What are the limits?

Limit	Value	Notes
Projects on one server	5	The default. Each project also has to fit in the server’s memory.
Services in one aria.yaml	12	A service is a web, api, worker or static entry.
Databases in one aria.yaml	6	Postgres, Redis or Supabase.
Variables in one aria.yaml	200	Under env.
Size of aria.yaml	64 KB
Volumes on one service	8
Paths in access_exceptions	20	On a service with access: owner.
Projects in one workspace	10	A default that Aria’s team can change.
Servers in one workspace	10	A default that Aria’s team can change.
Workspaces you own	10	A default that Aria’s team can change.
Free address	3 to 48 characters	Lowercase letters, numbers and hyphens, with at least one letter.
Service memory limit	128 MB to 64 GB	The memory field. By default twice Aria’s estimate.
Name of a service, database, volume or registry	31 characters	Lowercase letters, digits and dashes, starting with a letter.
A build or start command	1,000 characters	One line, with no backticks, single quotes or $( ).

Which databases and versions can I run?

Database	Versions	Notes
Postgres	16 and 17	Leave version out unless you need to pin one. Extensions: vector, pg_trgm, btree_gin, btree_gist, fuzzystrmatch, citext, pgcrypto, uuid-ossp, hstore, unaccent.
Redis	7	A cache. It is password-protected and not restored from backups.
Supabase	The official self-hosted stack	Needs about 4 GB of memory on its own. See Self-hosted Supabase.

There is no MySQL, MongoDB or object store. Postgres and Redis addresses have no TLS, so an app that insists on SSL has to be told not to.

What can a plan do?

• Grow or shrink. A bigger plan grows the server in place where it can, with one restart. Where it cannot, Aria moves your app to a bigger server and shows you the price and the downtime first. A smaller plan moves your apps to a smaller server, once what they use fits and they are running. See Servers and plans.
• Run in one place. A plan is one server in one location, which you choose when you pay. It is not spread across regions.
• Be a private VPS. A managed plan has no customer root login. SSH reaches the server only from Aria’s control network, so you work through aria.yaml, Aria AI, the command line, the app and your coding agent.
• Dedicated and GPU servers are by request, with a consultation. They have no public price. Email hello@getaria.cloud with the memory, cores and disks you need.

What are the limits for backups?

Limit	Value
Nightly backups	Every Postgres database, every volume and Supabase with its Storage files. Kept 30 days by default.
A backup block: retention	Defaults of 14 daily, 8 weekly and 6 monthly. You can keep 1 to 90 days, 0 to 52 weeks and 0 to 36 months.
A backup block: schedule	A five-field cron in UTC, at most once an hour.
Backup hook timeout	1 to 600 seconds, 120 by default.
Redis	Not restored.

See Backups for how to restore and how to hold your own key.

What are the limits for email?

Port 25 is blocked on a managed server, so an app cannot send straight to other mail servers. Send through Aria Mail, or through a mail provider on port 465 or 587.

Limit	Value
Recipients in one email	50
Attachments in one email	10 MB in total
Included in the price	2,000 emails a month across your workspace, then £0.50 per 1,000. See Aria Mail.
Sending from	A domain the project owns. The free address cannot send email.

What are the limits for the command line and agents?

• aria logs shows 1 to 2,000 lines, 200 by default.
• aria db url gives a temporary login for 10 to 480 minutes, 60 by default.
• An agent’s db_query returns at most 500 rows, and runs as a read-only role.
• A key can be limited to one project, and you can revoke it at any time. See the safety model.

What are the limits for your data?

Limit	Value
The Archive	Deleted users, rows and files wait 30 days.
Copy database	The download link works for one hour.
Direct access	Open for two hours from one computer.
Credentials on screen	60 seconds.

What are the limits for Aria AI?

Attachments, pictures and message length are on Aria AI.

Where do I go next?

Pricing has every plan. A managed VPS for developers explains what the server is and is not. The aria.yaml reference lists every field.