neunhoef

9 ms·

1.
Show HN: Learning Rust for C++ Programmers(gist.github.com)
3 points by neunhoef 3y ago|0 comments
2.
by neunhoef 5y ago
Yes, it has.
3.
by neunhoef 7y ago
In academia the cost for running computers and software deployments is usually greatly underestimated (I speak from experience). If you are a for-profit company and compute the full economic costs of running a database deployment including
4.
by neunhoef 7y ago
(ArangoDB developer here) MongoDB is a document store, ArangoDB is multi-model, so you have graphs and key/value and search as a additional benefits. The query language AQL is also a huge plus. Price comparisons are always hard, but fo
5.
by neunhoef 8y ago
Disclaimer: I am one of the core developers of ArangoDB and I work for the company ArangoDB. Yes, ArangoDB is young (6 years) in comparison to PostgreSQL (30 years). Yes, PostgreSQL is a phantastic database with an amazing open source commu
6.
by neunhoef 8y ago
As explained in the article: The "library part" of our executables is very small in comparison to the executable size. Furthermore, the memory usage of the database itself is usually much greater than the size of the executable it
7.
by neunhoef 8y ago
After compilation the executables have symbols and debug information. For the release we simply strip it. It is easy to get/provide versions with debugging information. We plan to provide deb and rpm packages containing these and provi
8.
by neunhoef 9y ago
Author of posted article here: thanks for the additional pointers. It seems that graphistry excels at visualization. Essentially, your offering confirms the main story of the article: make more out of your (graph) data by extracting it from
9.
by neunhoef 9y ago
Does anybody reading this have any experience with the performance of AWS Neptune? I would be very interested to hear about the performance of deep graph traversals on large sharded graphs.
10.
by neunhoef 9y ago
NoSQL is a very wide field. There are lots of special cases in which certain NoSQL data stores can help a lot. One of the points the posted article makes is that native multi-model databases help you not to sacrifice relational and yet re
11.
by neunhoef 9y ago
In discrete mathematics this happens a lot. Group orders, sizee of conjugacy classes, semigroup orders, numbers of isomorphism classes, character degrees, etc.
12.
by neunhoef 9y ago
You are of course right. My mistake.
13.
by neunhoef 9y ago
Silly solution: The rationals are countable. Just use any bijective mapping of the natural numbers to the rationals and then use the scheme for the natural numbers. (I know, a mathematician's answer! :-) )
14.
by neunhoef 9y ago
That is right, if you have access to your comparator, then this is much easier. However, it would still not work well for negative numbers, and, in many cases you sit client side and do not have access to your database engine.
15.
by neunhoef 9y ago
Great. Thanks. I was not aware of this.
16.
by neunhoef 9y ago
Many JSON parsers will treat long numbers as doubles. Therefore the only safe way to store them without potential loss is in a string. Without the encoding in the article or something along these lines, the sorting done by a database is not
17.
by neunhoef 9y ago
Author here: In mathematics, in particular discrete mathematics, there is a genuine need to store long integers accurately and to compare them numerically. This encoding is useful to do this for any database that can store UTF-8 strings and
18.
by neunhoef 9y ago
ArangoDB starter is now bundled with the distribution and can start single server instances as well as cluster. It can use Docker or normal processes.
19.
by neunhoef 9y ago
I think yes. The RocksDB engine is much better than the old engine in situations in which the stored data is larger than the available RAM. It all depends on the concrete queries issued but in general I would say: "Definitely yes!&quot
20.
by neunhoef 10y ago
Max from ArangoDB here. Just to avoid disappointment: The official Docker image arangodb will need a few days to be updated and be validated by Docker. Use arangodb/arangodb:3.0.0 in the meantime.
21.
by neunhoef 11y ago
One of the developers of ArangoDB here. Let me explain this quotation. When your graph data (including indices) do no longer fit into the RAM of a single server, you can either live with the higher latency of loading data from disk or you c
22.
by neunhoef 11y ago
Disclaimer: One of the ArangoDB developers here. As published in the white paper, here it is: ```{ "arangodb": { "async-replication": true, "nr-dbservers": 80, "nr-coordinator
23.
by neunhoef 11y ago
I only say that on many days I spend more time in my vim than in my bed. I usually run it in a terminal Window.
24.
by neunhoef 11y ago
(Disclaimer: Max from ArangoDB) We have invested considerable effort to optimize each database. Obviously, we know our own product better than the others. However, we have asked people who know the other products better, and we keep this in
25.
by neunhoef 11y ago
(Disclaimer: Max from ArangoDB here) I am all for database pragmatism. Fortunately, the choice "graph database" or "non-graph database" is no longer binary. We at ArangoDB are convinced that graphs in data modelling have
26.
by neunhoef 11y ago
No worries, yes, there is a lot of bad information about graph databases, to begin with, some seem to believe that everything out there can best described by a graph, which is clearly wrong. I have myself written something about this in thi
27.
by neunhoef 11y ago
(Disclaimer: Max from ArangoDB here) The purpose of this benchmark series was not to provide a comprehensive test of all these databases. We only wanted to demonstrate that a multi-model database can successfully compete with specialised so
28.
by neunhoef 12y ago
I am surprised that nobody mentions the great performance of Google's V8 engine here...
29.
Graphs in data modeling - is the emperor naked?(medium.com)
13 points by neunhoef 12y ago|1 comments
30.
by neunhoef 12y ago
For some additional thoughts about schemaless vs. schema-enforcing datastores see https://gist.github.com/neunhoef/9b6749089775e472d44c

More ›