Viewing profile — neunhoef

This is a collection of YouTube videos I made which target C++ programmers who want to learn Rust. Each video is accompanied by a web page with all code and commands, such that you…

Yes, it has.

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 ful…

(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…

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, PostgreSQ…

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 usual…

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 …

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 artic…

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 sharde…

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…

In discrete mathematics this happens a lot. Group orders, sizee of conjugacy classes, semigroup orders, numbers of isomorphism classes, character degrees, etc.

You are of course right. My mistake.

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 math…

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 a…

Great. Thanks. I was not aware of this.

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 someth…

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 …

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.

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 i…

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 …

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 liv…

Disclaimer: One of the ArangoDB developers here. As published in the white paper, here it is: ```{ "arangodb": { "async-replication": true, "nr-dbservers": 80, "nr-coordinators": 8…

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.

(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 pe…