Kvrocks: Redis-compatible distributed key value NoSQL database

DiabloD3

It seems to be written in C++. Did some corporation just dump this on Apache so they could write this off on their taxes?

Also, RocksDB? Why? Your data is just going to go there to vanish forever, never to be seen again

hivacruz

We use it for a year now in production and so far so good. We couldn't handle anymore having huge instances with a lot of RAM to hold data in Redis.

It looks like a normal database to me: disk storage for most of the data, and some cache in memory to speed up read queries. Everything is customizable.

I'm still waiting for a nice way to deploy it in a Kubernetes cluster, like a Helm Chart to easily setup a cluster with primaries and replicas. Also, the lack of keys eviction like LRU is problematic for us in some cases, it would be a nice addition.

hipadev23

As this is backed by RocksDB, does that mean it’s disk-based? I’ve been looking for a way to utilize Redis but with hot (memory) and warm (nvme disk) mechanisms to boost my capacity affordably.

ChocolateGod

Yes it is only limited by disk usage but it does have an in-memory cache.

I tested kvrocks about a year ago and don't have the benchmarks to hand anymore, but if I remember correctly kvrocks had a ~60% performance penalty compared to Redis, but depends on your disk speeds.

italodev

There are several redis-compatible disk backed solutions, https://github.com/OpenAtomFoundation/pika is the first that comes to mind but im positive there are others

tbarbugli

The list of supported commands looks quite impressive https://kvrocks.apache.org/docs/supported-commands#script-co...

dang

Related. Others?

Redis Alternative at Apache Software Foundation Now Supports RediSearch and SQL - https://news.ycombinator.com/item?id=40812879 - June 2024 (3 comments)

Show HN: Kvrocks – High Performance SSD Redis which supports replication and HA - https://news.ycombinator.com/item?id=20827111 - Aug 2019 (3 comments)

throwaway_031

Kronotop: Redis-compatible, transactional document store backed by FoundationDB - https://news.ycombinator.com/item?id=42771403

williamstein

The GitHub Readme seems easier to understand: https://github.com/apache/kvrocks?tab=readme-ov-file

qwertox

I am confused. "key value NoSQL". Is it a key-value store (that is obviously not SQL), which is capable of doing some rudimentary JSON store/retrieve operations like RedisJSON? Because for me a NoSQL database is a document-based, schema-less database like MongoDB.

I tried finding some examples but they don't even have an `examples` directory on GitHub.

So I just assume that this is RedisJSON + per namespace passwords?

Also no info on drivers, so does this mean that drivers compatible with Redis should be used with this?

If it is focused on the JSON part of Redis, then I might start using it as a replacement.

hivacruz

I don't think it is "focused" on the JSON part of Redis, they have added a lot of commands from Redis, not only JSON. They are also working on storing vectors too for instance.

As for the drivers compatible, if you mean "clients", in our case we use the official Python Redis client with Kvrocks and it works perfectly with the commands we use.

lucianbr

So DynamoDB would not fit your definition of NoSQL? I think it would, for most people. It's just a much larger category than Mongo and things like it.