# FoundationDB

26 Hacker News commenters recommended FoundationDB and 6 criticized it, November 2025 to November 2026. It was recommended in 9 of 13 months. It meets the Hacker Approved badge rule.

**Verdict:** Database praised for strict serializable transactions, hands-off reliability and deterministic testing; the client is complicated and needs expertise to use correctly.

## Why people recommend it

- Strict serializable transactions (5 comments): "The best implementation of serializable transactions I've seen is in FoundationDB but it comes with serious costs." ([source](https://news.ycombinator.com/item?id=47134915)) "very few can guarantee Strict Serializability in a distributed setting, like FoundationDB does" ([source](https://news.ycombinator.com/item?id=46464105)) "Doing it at the kv store level has the advantage of providing serializability" ([source](https://news.ycombinator.com/item?id=47998270))
- Reliable and hands-off to run (3 comments): "I've never spent less time thinking about a data store that I use daily." ([source](https://news.ycombinator.com/item?id=46194344)) "has been extremely reliable and hands-off, administration-wise" ([source](https://news.ycombinator.com/item?id=46192908)) "FDB is an excellent DB with very strong operational guarantees" ([source](https://news.ycombinator.com/item?id=47804349))
- Deterministic simulation testing (2 comments): "FoundationDB is awesome testing wise as they have deterministic simulation testing" ([source](https://news.ycombinator.com/item?id=46193911)) "already invented, and just slightly more tested than others on the market" ([source](https://news.ycombinator.com/item?id=49642831))

## What people warn about

- Weak website and documentation (2 comments): "it's weird that Apple, Snowflake, and the other big contributors have put essentially zero calories into documentation/website/etc." ([source](https://news.ycombinator.com/item?id=48776779)) "Why has FoundationDB not been professionalised? Better website, better docs, official GUI?" ([source](https://news.ycombinator.com/item?id=48773653))

## Alternatives hackers recommend

- [CockroachDB](https://hackerapproved.com/p/cockroachdb.md): 19 recommend
- [rqlite](https://hackerapproved.com/p/rqlite.md): 13 recommend
- [Apache Cassandra](https://hackerapproved.com/p/apache-cassandra.md): 12 recommend
- [TiDB](https://hackerapproved.com/p/tidb.md): 11 recommend
- [Marmot](https://hackerapproved.com/p/marmot.md): 10 recommend

## Cite as

Hacker Approved, "FoundationDB", https://hackerapproved.com/p/foundationdb/ (counts from 1,795,640 Hacker News comments, November 2025 to November 2026).