dagre VS java

It was unmaintained for a long time (maybe considered done implementing the algorithm it set out to), but recently a Google engineer has revived it: https://github.com/dagrejs/dagre

The issue I have with a lot of these tools is they work fine when depicting relationships between tables in the same schema (talking mainly about PostgreSQL databases), but few support showing relationships between tables across different schemas.

Also, when the number of tables grows large, few have layouts arranged in an optimal way. I use D2 (https://d2lang.com/) to create ERDs. However, of the free layout engines available in D2, Dagre (https://github.com/dagrejs/dagre) and ELK (https://github.com/eclipse/elk) both don't have optimal placement of layouts for a sufficiently complicated database.

You are right, after a bit of searching found nice library: https://github.com/dagrejs/dagre and couple of others. Maybe will try it out.

I am using ReactFlow with Dagre to create reasonably simple graph flows as the following example:

Hello,

I've been researching layered graph algorithms, but it appears that this market is mostly inactive at the moment.

Dagre (https://github.com/dagrejs/dagre) is considered outdated, with a codebase from 2015 that is no longer being updated, although they still accept some pull requests.

KLAY (https://github.com/kieler/klayjs) has been succeeded by ELK, and development stopped in 2016.

ELK (https://github.com/kieler/elkjs) is currently being developed by the KIELER Project, mostly by students and professors, written in Java. They are doing a great job, but the library is written in Java and then transpiled to JavaScript. They also rely on students for help with the development, which makes progress slow.

Do you happen to know of any new projects that are actively addressing this problem?

dagrejs has a section on "Recommended Reading" which lists which algorithms from which papers they implement.

https://github.com/dagrejs/dagre/wiki#recommended-reading

Terrastruct engineer here. The visualization will be open source though I can't say for sure yet whether it'll be with our layout algorithm or with https://github.com/dagrejs/dagre.

Another option is Dagre which is apparently now abandoned.

Structurizr is used for describing and visualizing architecture using the C4 model. One of the main selling points is the fact you can define an entire (IT) architecture model using text. A typical model consists of:

I've been using https://structurizr.com/ to automatically generate C4 diagrams from a model (rather than drawing them by hand). It works well with the approach for written documentation as proposed in https://arc42.org/. It's very easy to embed a C4 diagram into a markdown document.

The result is a set of documents and diagrams under version control that can be rendered using the structurizr documentation server (for interactive diagrams and indexed search).

I also use https://d2lang.com/ for declarative diagrams in addition to C4, e.g., sequence diagrams and https://adr.github.io/ for architectural decision records. These are also well integrated into structurizr.

Structurizr, available at https://structurizr.com/ and also has a free plan available with a single workspace available, is a tool that allows you to build out a C4 model using its Structurizr DSL to outline the Containers, Components, and Contexts of the architecture. It is a valuable tool for designing and visualizing a software architecture. In this example we'll build out a simple Machine Learning Pipeline, I mean a very basic one, featuring an ETL Pipeline and a model that trains images that classifies it as a image of planet earth or not. To begin, lets define our work space.

Structurizr builds upon "diagrams as code", allowing you to create multiple diagrams from a single model using a number of tools and programming languages.

As a customer since 2021, is this re-launch HN?

Loved the concept, found it fell over for real-sized things on even the most powerful machines, had to switch to Structurizr to do our C4 modeling: https://structurizr.com/

Was very disappointed, bet I'd get more devs to model architecture with this tool. If it's relaunching because perf problems were resolved, will look forward to try it again.

Depending on scope of people's needs, either highly recommended or, try it first.

Hats off to Victor for great support back then, and I see the docs are a reflection of that, like this section on embedding into popular tools:

https://docs.icepanel.io/features/sharing#embedding-share-li...

TL;DR: Helpful team, thoughtful UI, thoughtful docs, a product capability (c4 modeling) very worth understanding and using.

He built a tool called Structurizr for this.

Ah this is like https://structurizr.com which is based on C4.