SpacetimeDB
No written verdict yet. Here is what commenters said.
Why people recommend it
“I am continually impressed with the speed at which it operates”
“Specifically targeting your use case with high fps.”
Show 3 more
“Generous free tier, paid starts at $25/month.”
“like to join others to learn (as I have done for https://spacetimedb.com/)”
“combined with something like SpacetimeDB would be sweet”
Caveats and dissent
“They are yolo mode by default with periodic fsync and a big mutex around every reducer”
“While I think the tech is cool, and I'm sure it is fast, the fact that the benchmarks make assumptions about your stack doesn't sit right with me.”
Show 2 more
“It's hard to take the spacetimedb folks seriously”
“In particular, these statements should not be relied on:”
Often compared with
Who recommends it in their own words
From the makers not counted in the ranking
“as long as you don't have to twist your architecture in knots to get high performance, then yes it's worth it”
“SpacetimeDB does not acknowledge anything before data is fully persisted to disk”
> having never written a storage engine before AFAIK The guy is currently a micro-celebrity for the storage engine he wrote: https://cursor.com/blog/git-at-any-scale
“SpacetimeDB does not acknowledge anything before data is fully persisted to disk”
“we're so far out ahead of typical database performance for most OLTP workloads”
“As a SpacetimeDB dev, I absolutely agree”
Threads where it came up
- SpacetimeDB: A Short Technical Review 10 mentions
- Ok, but does it scale? 9 mentions
- What Game Engines Know About Data That Databases Forgot 2 mentions
- We ported the original Doom to SQL 1 mention
- How's Linear so fast? A technical breakdown 1 mention
- Ask HN: Who wants to be hired? (June 2026) 1 mention
Data: spacetimedb.json. Quotes are verbatim; the verdict and theme labels are written by a model from these comments, and every clause links to its sources.
All comments 19
“At least these days we get the alternative of SpacetimeDB functions”
“it seems that it's Source Available but converts to Open Source (AGPL) in 2031.”
“They are yolo mode by default with periodic fsync and a big mutex around every reducer”
“I am continually impressed with the speed at which it operates”
“While I think the tech is cool, and I'm sure it is fast, the fact that the benchmarks make assumptions about your stack doesn't sit right with me.”
“It's hard to take the spacetimedb folks seriously”
“In particular, these statements should not be relied on:”
“perhaps you'd believe the TigerBeetle team who also made their database single threaded by design”
“Specifically targeting your use case with high fps.”
“Databases: RDBMs · PostgreSQL · SQL Server · SQLite · SpacetimeDB”
“this sounds like convex.dev or https://spacetimedb.com/ (full disclosure I don't use either)”
“Databases: RDBMs · PostgreSQL · SQL Server · SQLite · SpacetimeDB”
“I remember this article for when I was researching for https://spacetimedb.com/”
Check the dBase/FoxPro family. My nostalgia remember it fondly, and there was not disconnected in how everything worked (example: The forms were stored as tables, so you can do alike `SELECT * FROM form_name WHERE widget=`), and there was zero ORM. This is my aim https://tablam.org. BTW I worked in SpacetimeDB and I proudly say is half-way :)
“the founder of SpacetimeDB, which was very interesting”
“I'm using expo and spacetimedb.”
“Generous free tier, paid starts at $25/month.”
“like to join others to learn (as I have done for https://spacetimedb.com/)”
“combined with something like SpacetimeDB would be sweet”