thekozmo

6 ms·

1.
MongoDB vs. Scylladb Architecture Comparison(scylladb.com)
3 points by thekozmo 3y ago|0 comments
2.
by thekozmo 3y ago
That's not true. Scylla does multi-threading. Scylla is a single process, single address space. It does pin the threads to individual hyper threads but there are additional other workers in the background as well.
3.
by thekozmo 4y ago
Many need SVB, we (ScyllaDB) received a great service from them in the past. Later on we just used them as one of our banks, obviously, going forward, we're diversifying our services. The problem for startups is that debt provider who
4.
Rust in Nginx(blog.cloudflare.com)
6 points by thekozmo 4y ago|0 comments
5.
Internode Cache Thrashing: Hunting a NUMA Performance Bug(thenewstack.io)
7 points by thekozmo 4y ago|0 comments
6.
by thekozmo 4y ago
ScyllaDB uses AGPL, a good and valid license
7.
by thekozmo 4y ago
There is no magic behind Scylla, mainly lots of hard work, hundreds of years of engineering, based on the former C* design which is based on Dynamo/Bigtable. The JVM is part of the problem, not all of it. The main issue is that it hide
8.
by thekozmo 4y ago
We (I'm a co-founder) run the following: - 1B (10^9) rows/sec with 86 servers https://www.scylladb.com/2019/12/12/how-scylla-scaled-to-one... - 1PB with 20 servers https://www.s
9.
by thekozmo 4y ago
Listening to SQLite creator podcast ( https://corecursive.com/066-sqlite-with-richard-hipp/# ), it does feel that Glauber is right about weird collaboration standards. The guy is against gmail, git, etc. Fossil may be b
10.
The Re-Org Rag (I'm My Own VP)(youtube.com)
2 points by thekozmo 4y ago|0 comments
11.
by thekozmo 4y ago
This is indeed what we (ScyllaDB) do, pretty much everywhere. It works great for 95% of our users. Discord wanted to add a level of guarantee since they observed a too high level of local disk failures.
12.
by thekozmo 4y ago
Am ScyllaDB but Marc did completely independent work. The client vcpus don't matter that much, the experiment compares the server side, the client shouldn't suck. When we test ScyllaDB or other DBs, we run benchmarks for hours and
13.
by thekozmo 4y ago
Good point. This is more of a tcp stack comparison between the kernel and userspace. Seastar has a sharded (per core) stack, which is very beneficial when the number of threads is high
14.
by thekozmo 4y ago
What's amazing is that the seastar tcp stack hasn't been changed over the past 7 years, while the kernel received plenty of improvements (in order to close the gap vs kernel bypass mechanisms). Still, for >> 99% of users, t
15.
by thekozmo 4y ago
ScyllaDB uses Seastar as an engine and the DynamoDB compatible API use HTTP parsing, so this use case is real. Of course the DB has much more to do than this benchmark with a static http reply but Scylla also uses many more core in the serv
16.
I built the 16-bit Hack computer from nand2tetris(hackaday.io)
2 points by thekozmo 4y ago|0 comments
17.
by thekozmo 5y ago
Impressive stuff! Worth to try to run the OSv unikernel (one of my babies) in it.
18.
by thekozmo 5y ago
Indeed quite a journey. If you love DynamoDB and like open source, give Scylla a try (disclosure me==founder): https://www.scylladb.com/alternator/
19.
by thekozmo 5y ago
It's not the open source license which we can't forbid using, it's the enterprise version.
20.
by thekozmo 5y ago
Hmm, AGPL is proprietary? This isn't aligned with the OSI.
21.
by thekozmo 5y ago
Clickhouse and other solutions you mentioned are for analytics while Scylla and Cassandra are for real-time. You can't compare the two types of tech
22.
by thekozmo 6y ago
It's possible to improve cql to a cql++ .. if you start going this path, it will lead to sql which isn't bad a all ;) It's not 'fair' to compare CQL to SQL, if you compare CQL to DynamoDB's http api, which scyl
23.
by thekozmo 6y ago
LWT on Scylla is much faster than its C* implementation. As one of the co-founders, I agree that SQL and the relational model are superior than CQL. However, either they do not scale or even when they do (newsql), they are 10x slower and ha
24.
by thekozmo 6y ago
We did something in the neighborhood, check it out: https://www.scylladb.com/2016/02/16/fault-injection-filesyst...
25.
by thekozmo 6y ago
Correct but Jepsen focuses on consistency and correctness and not on destructive. Scylla is exposed to range tombstone issue like many other LSMs. We recently have been improving them - check the most recent issues: https://githu
26.
by thekozmo 6y ago
The new direction is really promising. However, we at ScyllaDB (/me am a co-founder) already meet most of the requirements. We use C++20 with an advanced shard per core, we have an open format for the files, you can easily import&#x2F
27.
by thekozmo 6y ago
They do. CQL is 33% faster with Scylla than Scylla with DynamoDB. The lack of topology knowledge and lack of prepared statement hurt
28.
Scylla 4.0 Released(zdnet.com)
9 points by thekozmo 6y ago|0 comments
29.
ScyllaBD's Redis API Comparison(medium.com)
1 points by thekozmo 6y ago|0 comments
30.
Redis on NMVe with ScyllaDB(medium.com)
7 points by thekozmo 6y ago|0 comments

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